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1. Shard Calculation

Query:

Response:

Calculated Shard: 182 (from laksa108)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa182.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.techtarget.com/searchitoperations/video/No-GIL-Python-is-a-mistake\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.techtarget.com/searchitoperations/video/No-GIL-Python-is-a-mistake\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.techtarget.com\/searchitoperations\/video\/No-GIL-Python-is-a-mistake","crawl_time":1775585212,"first_indexed_time":1718902761,"http_code":200,"src_unparsed":"com,techtarget!www,\/searchitoperations\/video\/No-GIL-Python-is-a-mistake s443","src_root_hash":"17789036595607440382","history_drop_reason":null,"meta_title":"No-GIL Python is a mistake | TechTarget","meta_descriptions":["The no-GIL Python interpreter has the potential to destabilize the Python runtime and create serious problems for project maintainers"],"attrs_boilerpipe_text":"Article\n5 of 5\nPart of:\nTips to optimize Python app performance\nIn a quest to improve performance and bring cross-core threading to the CPython runtime, the Python community has approved Python Enhancement Proposal (PEP) 703, which will remove the infamous Global Interpreter Lock. However, GIL removal presents some serious challenges for Python users.\nWhy no-GIL Python is a mistake\nMembers of the community who question the wisdom of GIL removal often cite the following concerns:\nSlower single-threaded execution.\nThe need to support both GIL and non-GIL distributions.\nIncompatibility with non-Python functions.\nProgram-freezing stop-the-world events.\nAn exodus of users to a different language, particularly\nMojo\n.\nSlower Python apps\nCompiler architects don't have to worry about deadlocks when they only allow one thread to run at a time. Data contention isn't an issue.\nHowever, in a multi-threaded, multi-core environment, many key language features must include clock-cycle consuming locks. By adding such locks, a no-GIL Python might\ndegrade performance for single-threaded applications\n.\nEven the PEP 703 proposal itself admits the problem: \"The changes proposed in the PEP will increase execution overhead for\n--disable-gil\nbuilds compared to Python builds with the GIL. In other words, it will have slower single-threaded performance.\"\nMulti-version support\nAs early-adopters move to the no-GIL Python, maintainers of the most popular Python libraries will be expected to do the same. However, established users of those libraries will need continued support for GIL-based runtimes. That puts library providers and open-source maintainers in the unenviable position of supporting two distributions at the same time.\nIncompatible external functions\nPython's true strength is its ability to call functions and procedures in other languages,\nsuch as Java\nand C++, that are faster, more efficient and fully capable of threading across cores. However, all external functions currently in use expect to be\ninvoked in a safe, single-threaded manner\n. If a no-GIL Python is to work, all those external systems must be updated as well.\nStop-the-world events\nMemory management isn't easy when it involves multiple threads. To support garbage collection (GC), the no-GIL Python requires two stop-the-world (STW) events to reclaim memory.\nDuring STW events, a program completely freezes. Are Python users ready for 15-second STW pauses as the GC algorithm cleans things up?\nYou can easily port Python code to Mojo.\nMass user exodus\nThe transition to the no-GIL Python is fraught with uncertainty. Platform instability issues are expected, and users will need to rewrite working code to deal with no-GIL changes.\nMeanwhile, Python-compatible runtimes, such as Mojo, already provide the benefits of a no-GIL Python along with additional enhancements that make them vastly superior languages to use. Expect a\nmass exodus to Mojo\nas the Python community tries to remove the GIL.\nIt won't work\nThe other big problem with no-GIL Python? It probably won't work.\nTake the word of Python creator Guido van Rossum himself, who\nsaid in 2007\n, \"This has been tried before, with disappointing results, which is why I'm reluctant to put much effort into it myself.\" He echoed those 17-year-old sentiments again in a 2023 Lex Fridman\npodcast episode\n. Even the experts are unsure if removing Python's GIL will work.\nWhile I wish them luck in the endeavor, the pursuit of a no-GIL Python runtime seems to me like a giant mistake.\nDarcy DeClute is a technical trainer and Agile coach who helps organizations apply Scrum-based principles to adopt a modern DevOps stack. She is a certified Professional Scrum Master, Professional Scrum Developer and Professional Scrum Product Owner as well as author of Scrum Master Certification Guide.\nPart of:\nTips to optimize Python app performance\nArticle\n5 of 5\nUp Next","attrs_markdown":"[Search ITOperations](https:\/\/www.techtarget.com\/)\n\n[Login](https:\/\/www.techtarget.com\/login?fromURL=https%3A%2F%2Fwww.techtarget.com%2Fsearchitoperations%2Fvideo%2FNo-GIL-Python-is-a-mistake) [Register](https:\/\/www.techtarget.com\/register?fromURL=https%3A%2F%2Fwww.techtarget.com%2Fsearchitoperations%2Fvideo%2FNo-GIL-Python-is-a-mistake)\n\n[Informa TechTarget](https:\/\/www.informatechtarget.com\/) [Explore the Network](https:\/\/www.techtarget.com\/searchitoperations\/video\/No-GIL-Python-is-a-mistake)\n\n- [Software Quality](https:\/\/www.techtarget.com\/searchsoftwarequality\/)\n- [Cloud Computing](https:\/\/www.techtarget.com\/searchcloudcomputing\/)\n- [Data Center](https:\/\/www.techtarget.com\/searchdatacenter\/)\n- [Data Center Knowledge](https:\/\/www.datacenterknowledge.com\/)\n- [Information Week](https:\/\/www.informationweek.com\/)\n\n[An Informa TechTarget Publication](https:\/\/www.informatechtarget.com\/) [Explore our brands](https:\/\/www.informatechtarget.com\/our-brands)\n\n- [Search ITOperations](https:\/\/www.techtarget.com\/searchitoperations\/)\n- - [Automation & Orchestration](https:\/\/www.techtarget.com\/searchitoperations\/resources\/Systems-automation-and-orchestration)\n  - [Careers & Skills](https:\/\/www.techtarget.com\/searchitoperations\/resources\/IT-operations-careers-and-skills)\n  - [Containers & Virtualization](https:\/\/www.techtarget.com\/searchitoperations\/resources\/Containers-and-virtualization)\n  - [DevOps Tech & Culture](https:\/\/www.techtarget.com\/searchitoperations\/resources\/DevOps)\n  - [IT Systems Management](https:\/\/www.techtarget.com\/searchitoperations\/resources\/IT-Systems-Management-and-Monitoring)\n  [Other Content](https:\/\/www.techtarget.com\/searchitoperations\/video\/No-GIL-Python-is-a-mistake)\n  \n  - [News](https:\/\/www.techtarget.com\/news\/)\n  - [Features](https:\/\/www.techtarget.com\/searchitoperations\/features)\n  - [Tips](https:\/\/www.techtarget.com\/searchitoperations\/tips)\n  - [Webinars](https:\/\/www.techtarget.com\/searchitoperations\/webinars)\n  - [Sponsored Sites](https:\/\/www.techtarget.com\/searchitoperations\/sponsored_communities)\n  - [More](https:\/\/www.techtarget.com\/searchitoperations\/video\/No-GIL-Python-is-a-mistake)\n    - [Answers](https:\/\/www.techtarget.com\/searchitoperations\/answers)\n    - [Conference Guides](https:\/\/www.techtarget.com\/searchitoperations\/guides)\n    - [Definitions](https:\/\/www.techtarget.com\/searchitoperations\/definitions)\n    - [Opinions](https:\/\/www.techtarget.com\/searchitoperations\/opinions)\n    - [Podcasts](https:\/\/www.techtarget.com\/searchitoperations\/podcasts)\n    - [Quizzes](https:\/\/www.techtarget.com\/searchitoperations\/quizzes)\n    - [Tech Accelerators](https:\/\/www.techtarget.com\/searchitoperations\/techaccelerators)\n    - [Tutorials](https:\/\/www.techtarget.com\/searchitoperations\/tutorials)\n    - [Videos](https:\/\/www.techtarget.com\/searchitoperations\/videos)\n\n- [Home](https:\/\/www.techtarget.com\/searchitoperations\/)\n- [Systems automation and orchestration](https:\/\/www.techtarget.com\/searchitoperations\/resources\/Systems-automation-and-orchestration)\n\nArticle  5 of 5\n\nPart of: Tips to optimize Python app performance\n# No-GIL Python is a mistake\nBy\n\n- [Darcy DeClute](https:\/\/www.techtarget.com\/contributor\/Darcy-DeClute), Scrumtuous Inc.\n\nPublished: 20 Jun 2024\n\nRelated Videos\n\n- [![Python's GIL removal is a poison pill and benefits Mojo](https:\/\/i.ytimg.com\/vi\/YbbHnCk9Wuw\/default.jpg)](https:\/\/www.theserverside.com\/video\/Pythons-GIL-removal-is-a-poison-pill-and-benefits-Mojo)\n  [Python's GIL removal is a poison pill and benefits Mojo](https:\/\/www.theserverside.com\/video\/Pythons-GIL-removal-is-a-poison-pill-and-benefits-Mojo)\n- [![Do the 5 Scrum values really add value?](https:\/\/i.ytimg.com\/vi\/T9uq2lMQ928\/default.jpg)](https:\/\/www.theserverside.com\/video\/Do-the-Scrum-values-really-add-value)\n  [Do the 5 Scrum values really add value?](https:\/\/www.theserverside.com\/video\/Do-the-Scrum-values-really-add-value)\n- [How to print any star pattern in Python -- or Mojo](https:\/\/www.theserverside.com\/video\/How-to-print-any-star-pattern-in-Python-or-Mojo)\n- [![Is Scrum a framework or methodology?](https:\/\/i.ytimg.com\/vi\/fu2bvCTSd9U\/default.jpg)](https:\/\/www.techtarget.com\/searchsoftwarequality\/video\/Is-Scrum-a-framework-or-methodology)\n  [Is Scrum a framework or methodology?](https:\/\/www.techtarget.com\/searchsoftwarequality\/video\/Is-Scrum-a-framework-or-methodology)\n- [View All Videos](https:\/\/www.techtarget.com\/searchitoperations\/videos)\n\n[View All Videos](https:\/\/www.techtarget.com\/searchitoperations\/videos)\n\n- Share this item with your network:\n\nIn a quest to improve performance and bring cross-core threading to the CPython runtime, the Python community has approved Python Enhancement Proposal (PEP) 703, which will remove the infamous Global Interpreter Lock. However, GIL removal presents some serious challenges for Python users.\n\n## Why no-GIL Python is a mistake\nMembers of the community who question the wisdom of GIL removal often cite the following concerns:\n\n- Slower single-threaded execution.\n- The need to support both GIL and non-GIL distributions.\n- Incompatibility with non-Python functions.\n- Program-freezing stop-the-world events.\n- An exodus of users to a different language, particularly [Mojo](https:\/\/www.theserverside.com\/definition\/What-is-Mojo-programming-language-and-what-is-it-used-for).\n## Slower Python apps\nCompiler architects don't have to worry about deadlocks when they only allow one thread to run at a time. Data contention isn't an issue.\n\nHowever, in a multi-threaded, multi-core environment, many key language features must include clock-cycle consuming locks. By adding such locks, a no-GIL Python might [degrade performance for single-threaded applications](https:\/\/www.theserverside.com\/blog\/Coffee-Talk-Java-News-Stories-and-Opinions\/Hello-World-in-Python-vs-Java).\n\nEven the PEP 703 proposal itself admits the problem: \"The changes proposed in the PEP will increase execution overhead for \\--disable-gil builds compared to Python builds with the GIL. In other words, it will have slower single-threaded performance.\"\n\n## Multi-version support\nAs early-adopters move to the no-GIL Python, maintainers of the most popular Python libraries will be expected to do the same. However, established users of those libraries will need continued support for GIL-based runtimes. That puts library providers and open-source maintainers in the unenviable position of supporting two distributions at the same time.\n\n## Incompatible external functions\nPython's true strength is its ability to call functions and procedures in other languages, [such as Java](https:\/\/www.theserverside.com\/blog\/Coffee-Talk-Java-News-Stories-and-Opinions\/Java-vs-Python-Application-code-comparison) and C++, that are faster, more efficient and fully capable of threading across cores. However, all external functions currently in use expect to be [invoked in a safe, single-threaded manner](https:\/\/www.theserverside.com\/tip\/The-dangers-of-Python-import-and-how-enterprises-can-be-safe). If a no-GIL Python is to work, all those external systems must be updated as well.\n\n## Stop-the-world events\nMemory management isn't easy when it involves multiple threads. To support garbage collection (GC), the no-GIL Python requires two stop-the-world (STW) events to reclaim memory.\n\nDuring STW events, a program completely freezes. Are Python users ready for 15-second STW pauses as the GC algorithm cleans things up?\n\n![Screenshot of code that ports Python to Mojo.](https:\/\/www.techtarget.com\/rms\/onlineimages\/mojo-code-h_mobile.jpg)\n\nYou can easily port Python code to Mojo.\n## Mass user exodus\nThe transition to the no-GIL Python is fraught with uncertainty. Platform instability issues are expected, and users will need to rewrite working code to deal with no-GIL changes.\n\nMeanwhile, Python-compatible runtimes, such as Mojo, already provide the benefits of a no-GIL Python along with additional enhancements that make them vastly superior languages to use. Expect a [mass exodus to Mojo](https:\/\/www.theserverside.com\/blog\/Coffee-Talk-Java-News-Stories-and-Opinions\/First-Mojo-Program-AI-ML-Hello-World-Number-Guesser-Modular) as the Python community tries to remove the GIL.\n\n## It won't work\nThe other big problem with no-GIL Python? It probably won't work.\n\nTake the word of Python creator Guido van Rossum himself, who [said in 2007](https:\/\/www.artima.com\/weblogs\/viewpost.jsp?thread=214235), \"This has been tried before, with disappointing results, which is why I'm reluctant to put much effort into it myself.\" He echoed those 17-year-old sentiments again in a 2023 Lex Fridman [podcast episode](https:\/\/lexfridman.com\/guido-van-rossum-2\/). Even the experts are unsure if removing Python's GIL will work.\n\nWhile I wish them luck in the endeavor, the pursuit of a no-GIL Python runtime seems to me like a giant mistake.\n\n*Darcy DeClute is a technical trainer and Agile coach who helps organizations apply Scrum-based principles to adopt a modern DevOps stack. She is a certified Professional Scrum Master, Professional Scrum Developer and Professional Scrum Product Owner as well as author of Scrum Master Certification Guide.*\n\nPart of: Tips to optimize Python app performance\n\nArticle 5 of 5\n\nUp Next\n\n[9 tips to improve Python performance Python performance gets a bad rap compared with languages such as Java. Use these tips to identify and fix problems in your Python code to tweak its performance.](https:\/\/www.theserverside.com\/tip\/Tips-to-improve-Python-performance)\n\n[Speed up Python and NumPy by avoiding the conversion tax Data and memory transfers in Python come with a hidden performance tax. Here's how to use NumPy for optimal performance by avoiding jumps across a hidden line of conversions.](https:\/\/www.theserverside.com\/tip\/Speed-up-Python-and-NumPy-by-avoiding-the-conversion-tax)\n\n[What does the Python 'if name equals main' construct do? Ever wonder what Python's if name equals main syntax does? Here we explore what it does and when to use it.](https:\/\/www.theserverside.com\/tip\/What-does-the-Python-if-name-equals-main-construct-do)\n\n[The benefits of using compiled regex in Python and Java Whether you're programming in Java or Python, compiled regex can significantly speed up your text manipulation routines.](https:\/\/www.theserverside.com\/tip\/The-benefits-of-using-compiled-regex-in-Python-and-Java)\n\n[No-GIL Python is a mistake Python's GIL is slated for the chopping block, and while the promise is improved performance, the reality of removing the GIL may be quite different.](https:\/\/www.techtarget.com\/searchitoperations\/video\/No-GIL-Python-is-a-mistake)\n\nLatest TechTarget resources\n\n- [Software Quality](https:\/\/www.techtarget.com\/searchitoperations\/video\/No-GIL-Python-is-a-mistake)\n- [Cloud Computing](https:\/\/www.techtarget.com\/searchitoperations\/video\/No-GIL-Python-is-a-mistake)\n- [Data Center](https:\/\/www.techtarget.com\/searchitoperations\/video\/No-GIL-Python-is-a-mistake)\n\n[Search Software Quality](https:\/\/www.techtarget.com\/searchsoftwarequality\/)\n\n- [Harness Artifact Registry strengthens supply chain governance](https:\/\/www.techtarget.com\/searchsoftwarequality\/news\/366639489\/Harness-Artifact-Registry-strengthens-supply-chain-governance)\n  Harness makes its artifact registry generally available beyond early preview customers, with a security twist that could ...\n- [AWS Kiro 'user error' reflects common AI coding review gap](https:\/\/www.techtarget.com\/searchsoftwarequality\/news\/366639129\/AWS-Kiro-user-error-reflects-common-AI-coding-review-gap)\n  Even internal AWS Kiro users haven't always peer-reviewed AI code output, as evidenced by a reported December outage that ...\n- [AWS AI IDE, AgentCore throw down gauntlets for Microsoft](https:\/\/www.techtarget.com\/searchsoftwarequality\/news\/366635669\/AWS-AI-IDE-AgentCore-throw-down-gauntlets-for-Microsoft)\n  Kiro emerges as a significant alternative to GitHub Copilot agents, while AWS AgentCore updates square off against Agent 365 in ...\n\n[Search Cloud Computing](https:\/\/www.techtarget.com\/searchcloudcomputing\/)\n\n- [Is your cloud storage ready for AI workloads?](https:\/\/www.techtarget.com\/searchcloudcomputing\/tip\/Is-your-cloud-storage-ready-for-AI-workloads)\n  Cloud storage design directly impacts AI performance, scalability and cost. 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All Rights Reserved.   \n   \n  [Privacy Policy](https:\/\/www.informatechtarget.com\/privacy-policy\/)    \n  [Cookie Preferences](https:\/\/www.techtarget.com\/searchitoperations\/video\/No-GIL-Python-is-a-mistake)    \n   [Cookie Preferences](https:\/\/www.techtarget.com\/searchitoperations\/video\/No-GIL-Python-is-a-mistake)    \n   [Do Not Sell or Share My Personal Information](https:\/\/techtarget.zendesk.com\/hc\/en-us\/requests\/new?ticket_form_id=360004852434)\n\nClose\n\n![](https:\/\/go.techtarget.com\/clicktrack-r\/activity\/activity.gif?activityTypeId=16&t=252514338&t2=365532288&t3=306107&t4=365532258&a=2026-04-07%2005:33:19&g=366589393&c=normal&auid=d8721793-3787-41f0-bac4-58dd0a05fd32&r=599410)","attrs_readable_markdown":"Article  5 of 5\n\nPart of: Tips to optimize Python app performance\n\nIn a quest to improve performance and bring cross-core threading to the CPython runtime, the Python community has approved Python Enhancement Proposal (PEP) 703, which will remove the infamous Global Interpreter Lock. However, GIL removal presents some serious challenges for Python users.\n\n## Why no-GIL Python is a mistake\nMembers of the community who question the wisdom of GIL removal often cite the following concerns:\n\n- Slower single-threaded execution.\n- The need to support both GIL and non-GIL distributions.\n- Incompatibility with non-Python functions.\n- Program-freezing stop-the-world events.\n- An exodus of users to a different language, particularly [Mojo](https:\/\/www.theserverside.com\/definition\/What-is-Mojo-programming-language-and-what-is-it-used-for).\n## Slower Python apps\nCompiler architects don't have to worry about deadlocks when they only allow one thread to run at a time. Data contention isn't an issue.\n\nHowever, in a multi-threaded, multi-core environment, many key language features must include clock-cycle consuming locks. By adding such locks, a no-GIL Python might [degrade performance for single-threaded applications](https:\/\/www.theserverside.com\/blog\/Coffee-Talk-Java-News-Stories-and-Opinions\/Hello-World-in-Python-vs-Java).\n\nEven the PEP 703 proposal itself admits the problem: \"The changes proposed in the PEP will increase execution overhead for \\--disable-gil builds compared to Python builds with the GIL. In other words, it will have slower single-threaded performance.\"\n\n## Multi-version support\nAs early-adopters move to the no-GIL Python, maintainers of the most popular Python libraries will be expected to do the same. However, established users of those libraries will need continued support for GIL-based runtimes. That puts library providers and open-source maintainers in the unenviable position of supporting two distributions at the same time.\n\n## Incompatible external functions\nPython's true strength is its ability to call functions and procedures in other languages, [such as Java](https:\/\/www.theserverside.com\/blog\/Coffee-Talk-Java-News-Stories-and-Opinions\/Java-vs-Python-Application-code-comparison) and C++, that are faster, more efficient and fully capable of threading across cores. However, all external functions currently in use expect to be [invoked in a safe, single-threaded manner](https:\/\/www.theserverside.com\/tip\/The-dangers-of-Python-import-and-how-enterprises-can-be-safe). If a no-GIL Python is to work, all those external systems must be updated as well.\n\n## Stop-the-world events\nMemory management isn't easy when it involves multiple threads. To support garbage collection (GC), the no-GIL Python requires two stop-the-world (STW) events to reclaim memory.\n\nDuring STW events, a program completely freezes. Are Python users ready for 15-second STW pauses as the GC algorithm cleans things up?\n\n![Screenshot of code that ports Python to Mojo.](https:\/\/www.techtarget.com\/rms\/onlineimages\/mojo-code-h_mobile.jpg)\n\nYou can easily port Python code to Mojo.\n## Mass user exodus\nThe transition to the no-GIL Python is fraught with uncertainty. Platform instability issues are expected, and users will need to rewrite working code to deal with no-GIL changes.\n\nMeanwhile, Python-compatible runtimes, such as Mojo, already provide the benefits of a no-GIL Python along with additional enhancements that make them vastly superior languages to use. Expect a [mass exodus to Mojo](https:\/\/www.theserverside.com\/blog\/Coffee-Talk-Java-News-Stories-and-Opinions\/First-Mojo-Program-AI-ML-Hello-World-Number-Guesser-Modular) as the Python community tries to remove the GIL.\n\n## It won't work\nThe other big problem with no-GIL Python? It probably won't work.\n\nTake the word of Python creator Guido van Rossum himself, who [said in 2007](https:\/\/www.artima.com\/weblogs\/viewpost.jsp?thread=214235), \"This has been tried before, with disappointing results, which is why I'm reluctant to put much effort into it myself.\" He echoed those 17-year-old sentiments again in a 2023 Lex Fridman [podcast episode](https:\/\/lexfridman.com\/guido-van-rossum-2\/). Even the experts are unsure if removing Python's GIL will work.\n\nWhile I wish them luck in the endeavor, the pursuit of a no-GIL Python runtime seems to me like a giant mistake.\n\n*Darcy DeClute is a technical trainer and Agile coach who helps organizations apply Scrum-based principles to adopt a modern DevOps stack. She is a certified Professional Scrum Master, Professional Scrum Developer and Professional Scrum Product Owner as well as author of Scrum Master Certification Guide.*\n\nPart of: Tips to optimize Python app performance\n\nArticle 5 of 5\n\nUp Next","meta_canonical":null}

3. Robots.txt Check

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4. Spam/Ban Check

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Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📄

INDEXABLE

✅

CRAWLED

8 days ago

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Meta Title	No-GIL Python is a mistake \| TechTarget
Meta Description	The no-GIL Python interpreter has the potential to destabilize the Python runtime and create serious problems for project maintainers
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Boilerpipe Text	Article 5 of 5 Part of: Tips to optimize Python app performance In a quest to improve performance and bring cross-core threading to the CPython runtime, the Python community has approved Python Enhancement Proposal (PEP) 703, which will remove the infamous Global Interpreter Lock. However, GIL removal presents some serious challenges for Python users. Why no-GIL Python is a mistake Members of the community who question the wisdom of GIL removal often cite the following concerns: Slower single-threaded execution. The need to support both GIL and non-GIL distributions. Incompatibility with non-Python functions. Program-freezing stop-the-world events. An exodus of users to a different language, particularly Mojo . Slower Python apps Compiler architects don't have to worry about deadlocks when they only allow one thread to run at a time. Data contention isn't an issue. However, in a multi-threaded, multi-core environment, many key language features must include clock-cycle consuming locks. By adding such locks, a no-GIL Python might degrade performance for single-threaded applications . Even the PEP 703 proposal itself admits the problem: "The changes proposed in the PEP will increase execution overhead for --disable-gil builds compared to Python builds with the GIL. In other words, it will have slower single-threaded performance." Multi-version support As early-adopters move to the no-GIL Python, maintainers of the most popular Python libraries will be expected to do the same. However, established users of those libraries will need continued support for GIL-based runtimes. That puts library providers and open-source maintainers in the unenviable position of supporting two distributions at the same time. Incompatible external functions Python's true strength is its ability to call functions and procedures in other languages, such as Java and C++, that are faster, more efficient and fully capable of threading across cores. However, all external functions currently in use expect to be invoked in a safe, single-threaded manner . If a no-GIL Python is to work, all those external systems must be updated as well. Stop-the-world events Memory management isn't easy when it involves multiple threads. To support garbage collection (GC), the no-GIL Python requires two stop-the-world (STW) events to reclaim memory. During STW events, a program completely freezes. Are Python users ready for 15-second STW pauses as the GC algorithm cleans things up? You can easily port Python code to Mojo. Mass user exodus The transition to the no-GIL Python is fraught with uncertainty. Platform instability issues are expected, and users will need to rewrite working code to deal with no-GIL changes. Meanwhile, Python-compatible runtimes, such as Mojo, already provide the benefits of a no-GIL Python along with additional enhancements that make them vastly superior languages to use. Expect a mass exodus to Mojo as the Python community tries to remove the GIL. It won't work The other big problem with no-GIL Python? It probably won't work. Take the word of Python creator Guido van Rossum himself, who said in 2007 , "This has been tried before, with disappointing results, which is why I'm reluctant to put much effort into it myself." He echoed those 17-year-old sentiments again in a 2023 Lex Fridman podcast episode . Even the experts are unsure if removing Python's GIL will work. While I wish them luck in the endeavor, the pursuit of a no-GIL Python runtime seems to me like a giant mistake. Darcy DeClute is a technical trainer and Agile coach who helps organizations apply Scrum-based principles to adopt a modern DevOps stack. She is a certified Professional Scrum Master, Professional Scrum Developer and Professional Scrum Product Owner as well as author of Scrum Master Certification Guide. Part of: Tips to optimize Python app performance Article 5 of 5 Up Next
Markdown	[Search ITOperations](https://www.techtarget.com/) [Login](https://www.techtarget.com/login?fromURL=https%3A%2F%2Fwww.techtarget.com%2Fsearchitoperations%2Fvideo%2FNo-GIL-Python-is-a-mistake) [Register](https://www.techtarget.com/register?fromURL=https%3A%2F%2Fwww.techtarget.com%2Fsearchitoperations%2Fvideo%2FNo-GIL-Python-is-a-mistake) [Informa TechTarget](https://www.informatechtarget.com/) [Explore the Network](https://www.techtarget.com/searchitoperations/video/No-GIL-Python-is-a-mistake) - [Software Quality](https://www.techtarget.com/searchsoftwarequality/) - [Cloud Computing](https://www.techtarget.com/searchcloudcomputing/) - [Data Center](https://www.techtarget.com/searchdatacenter/) - [Data Center Knowledge](https://www.datacenterknowledge.com/) - [Information Week](https://www.informationweek.com/) [An Informa TechTarget Publication](https://www.informatechtarget.com/) [Explore our brands](https://www.informatechtarget.com/our-brands) - [Search ITOperations](https://www.techtarget.com/searchitoperations/) - - [Automation & Orchestration](https://www.techtarget.com/searchitoperations/resources/Systems-automation-and-orchestration) - [Careers & Skills](https://www.techtarget.com/searchitoperations/resources/IT-operations-careers-and-skills) - [Containers & Virtualization](https://www.techtarget.com/searchitoperations/resources/Containers-and-virtualization) - [DevOps Tech & Culture](https://www.techtarget.com/searchitoperations/resources/DevOps) - [IT Systems Management](https://www.techtarget.com/searchitoperations/resources/IT-Systems-Management-and-Monitoring) [Other Content](https://www.techtarget.com/searchitoperations/video/No-GIL-Python-is-a-mistake) - [News](https://www.techtarget.com/news/) - [Features](https://www.techtarget.com/searchitoperations/features) - [Tips](https://www.techtarget.com/searchitoperations/tips) - [Webinars](https://www.techtarget.com/searchitoperations/webinars) - [Sponsored Sites](https://www.techtarget.com/searchitoperations/sponsored_communities) - [More](https://www.techtarget.com/searchitoperations/video/No-GIL-Python-is-a-mistake) - [Answers](https://www.techtarget.com/searchitoperations/answers) - [Conference Guides](https://www.techtarget.com/searchitoperations/guides) - [Definitions](https://www.techtarget.com/searchitoperations/definitions) - [Opinions](https://www.techtarget.com/searchitoperations/opinions) - [Podcasts](https://www.techtarget.com/searchitoperations/podcasts) - [Quizzes](https://www.techtarget.com/searchitoperations/quizzes) - [Tech Accelerators](https://www.techtarget.com/searchitoperations/techaccelerators) - [Tutorials](https://www.techtarget.com/searchitoperations/tutorials) - [Videos](https://www.techtarget.com/searchitoperations/videos) - [Home](https://www.techtarget.com/searchitoperations/) - [Systems automation and orchestration](https://www.techtarget.com/searchitoperations/resources/Systems-automation-and-orchestration) Article 5 of 5 Part of: Tips to optimize Python app performance # No-GIL Python is a mistake By - [Darcy DeClute](https://www.techtarget.com/contributor/Darcy-DeClute), Scrumtuous Inc. Published: 20 Jun 2024 Related Videos - [![Python's GIL removal is a poison pill and benefits Mojo](https://i.ytimg.com/vi/YbbHnCk9Wuw/default.jpg)](https://www.theserverside.com/video/Pythons-GIL-removal-is-a-poison-pill-and-benefits-Mojo) [Python's GIL removal is a poison pill and benefits Mojo](https://www.theserverside.com/video/Pythons-GIL-removal-is-a-poison-pill-and-benefits-Mojo) - [![Do the 5 Scrum values really add value?](https://i.ytimg.com/vi/T9uq2lMQ928/default.jpg)](https://www.theserverside.com/video/Do-the-Scrum-values-really-add-value) [Do the 5 Scrum values really add value?](https://www.theserverside.com/video/Do-the-Scrum-values-really-add-value) - [How to print any star pattern in Python -- or Mojo](https://www.theserverside.com/video/How-to-print-any-star-pattern-in-Python-or-Mojo) - [![Is Scrum a framework or methodology?](https://i.ytimg.com/vi/fu2bvCTSd9U/default.jpg)](https://www.techtarget.com/searchsoftwarequality/video/Is-Scrum-a-framework-or-methodology) [Is Scrum a framework or methodology?](https://www.techtarget.com/searchsoftwarequality/video/Is-Scrum-a-framework-or-methodology) - [View All Videos](https://www.techtarget.com/searchitoperations/videos) [View All Videos](https://www.techtarget.com/searchitoperations/videos) - Share this item with your network: In a quest to improve performance and bring cross-core threading to the CPython runtime, the Python community has approved Python Enhancement Proposal (PEP) 703, which will remove the infamous Global Interpreter Lock. However, GIL removal presents some serious challenges for Python users. ## Why no-GIL Python is a mistake Members of the community who question the wisdom of GIL removal often cite the following concerns: - Slower single-threaded execution. - The need to support both GIL and non-GIL distributions. - Incompatibility with non-Python functions. - Program-freezing stop-the-world events. - An exodus of users to a different language, particularly [Mojo](https://www.theserverside.com/definition/What-is-Mojo-programming-language-and-what-is-it-used-for). ## Slower Python apps Compiler architects don't have to worry about deadlocks when they only allow one thread to run at a time. Data contention isn't an issue. However, in a multi-threaded, multi-core environment, many key language features must include clock-cycle consuming locks. By adding such locks, a no-GIL Python might [degrade performance for single-threaded applications](https://www.theserverside.com/blog/Coffee-Talk-Java-News-Stories-and-Opinions/Hello-World-in-Python-vs-Java). Even the PEP 703 proposal itself admits the problem: "The changes proposed in the PEP will increase execution overhead for \--disable-gil builds compared to Python builds with the GIL. In other words, it will have slower single-threaded performance." ## Multi-version support As early-adopters move to the no-GIL Python, maintainers of the most popular Python libraries will be expected to do the same. However, established users of those libraries will need continued support for GIL-based runtimes. That puts library providers and open-source maintainers in the unenviable position of supporting two distributions at the same time. ## Incompatible external functions Python's true strength is its ability to call functions and procedures in other languages, [such as Java](https://www.theserverside.com/blog/Coffee-Talk-Java-News-Stories-and-Opinions/Java-vs-Python-Application-code-comparison) and C++, that are faster, more efficient and fully capable of threading across cores. However, all external functions currently in use expect to be [invoked in a safe, single-threaded manner](https://www.theserverside.com/tip/The-dangers-of-Python-import-and-how-enterprises-can-be-safe). If a no-GIL Python is to work, all those external systems must be updated as well. ## Stop-the-world events Memory management isn't easy when it involves multiple threads. To support garbage collection (GC), the no-GIL Python requires two stop-the-world (STW) events to reclaim memory. During STW events, a program completely freezes. Are Python users ready for 15-second STW pauses as the GC algorithm cleans things up? ![Screenshot of code that ports Python to Mojo.](https://www.techtarget.com/rms/onlineimages/mojo-code-h_mobile.jpg) You can easily port Python code to Mojo. ## Mass user exodus The transition to the no-GIL Python is fraught with uncertainty. Platform instability issues are expected, and users will need to rewrite working code to deal with no-GIL changes. Meanwhile, Python-compatible runtimes, such as Mojo, already provide the benefits of a no-GIL Python along with additional enhancements that make them vastly superior languages to use. Expect a [mass exodus to Mojo](https://www.theserverside.com/blog/Coffee-Talk-Java-News-Stories-and-Opinions/First-Mojo-Program-AI-ML-Hello-World-Number-Guesser-Modular) as the Python community tries to remove the GIL. ## It won't work The other big problem with no-GIL Python? It probably won't work. Take the word of Python creator Guido van Rossum himself, who [said in 2007](https://www.artima.com/weblogs/viewpost.jsp?thread=214235), "This has been tried before, with disappointing results, which is why I'm reluctant to put much effort into it myself." He echoed those 17-year-old sentiments again in a 2023 Lex Fridman [podcast episode](https://lexfridman.com/guido-van-rossum-2/). Even the experts are unsure if removing Python's GIL will work. While I wish them luck in the endeavor, the pursuit of a no-GIL Python runtime seems to me like a giant mistake. Darcy DeClute is a technical trainer and Agile coach who helps organizations apply Scrum-based principles to adopt a modern DevOps stack. She is a certified Professional Scrum Master, Professional Scrum Developer and Professional Scrum Product Owner as well as author of Scrum Master Certification Guide. Part of: Tips to optimize Python app performance Article 5 of 5 Up Next [9 tips to improve Python performance Python performance gets a bad rap compared with languages such as Java. Use these tips to identify and fix problems in your Python code to tweak its performance.](https://www.theserverside.com/tip/Tips-to-improve-Python-performance) [Speed up Python and NumPy by avoiding the conversion tax Data and memory transfers in Python come with a hidden performance tax. Here's how to use NumPy for optimal performance by avoiding jumps across a hidden line of conversions.](https://www.theserverside.com/tip/Speed-up-Python-and-NumPy-by-avoiding-the-conversion-tax) [What does the Python 'if name equals main' construct do? Ever wonder what Python's if name equals main syntax does? 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Readable Markdown	Article 5 of 5 Part of: Tips to optimize Python app performance In a quest to improve performance and bring cross-core threading to the CPython runtime, the Python community has approved Python Enhancement Proposal (PEP) 703, which will remove the infamous Global Interpreter Lock. However, GIL removal presents some serious challenges for Python users. ## Why no-GIL Python is a mistake Members of the community who question the wisdom of GIL removal often cite the following concerns: - Slower single-threaded execution. - The need to support both GIL and non-GIL distributions. - Incompatibility with non-Python functions. - Program-freezing stop-the-world events. - An exodus of users to a different language, particularly [Mojo](https://www.theserverside.com/definition/What-is-Mojo-programming-language-and-what-is-it-used-for). ## Slower Python apps Compiler architects don't have to worry about deadlocks when they only allow one thread to run at a time. Data contention isn't an issue. However, in a multi-threaded, multi-core environment, many key language features must include clock-cycle consuming locks. By adding such locks, a no-GIL Python might [degrade performance for single-threaded applications](https://www.theserverside.com/blog/Coffee-Talk-Java-News-Stories-and-Opinions/Hello-World-in-Python-vs-Java). Even the PEP 703 proposal itself admits the problem: "The changes proposed in the PEP will increase execution overhead for \--disable-gil builds compared to Python builds with the GIL. In other words, it will have slower single-threaded performance." ## Multi-version support As early-adopters move to the no-GIL Python, maintainers of the most popular Python libraries will be expected to do the same. However, established users of those libraries will need continued support for GIL-based runtimes. That puts library providers and open-source maintainers in the unenviable position of supporting two distributions at the same time. ## Incompatible external functions Python's true strength is its ability to call functions and procedures in other languages, [such as Java](https://www.theserverside.com/blog/Coffee-Talk-Java-News-Stories-and-Opinions/Java-vs-Python-Application-code-comparison) and C++, that are faster, more efficient and fully capable of threading across cores. However, all external functions currently in use expect to be [invoked in a safe, single-threaded manner](https://www.theserverside.com/tip/The-dangers-of-Python-import-and-how-enterprises-can-be-safe). If a no-GIL Python is to work, all those external systems must be updated as well. ## Stop-the-world events Memory management isn't easy when it involves multiple threads. To support garbage collection (GC), the no-GIL Python requires two stop-the-world (STW) events to reclaim memory. During STW events, a program completely freezes. Are Python users ready for 15-second STW pauses as the GC algorithm cleans things up? ![Screenshot of code that ports Python to Mojo.](https://www.techtarget.com/rms/onlineimages/mojo-code-h_mobile.jpg) You can easily port Python code to Mojo. ## Mass user exodus The transition to the no-GIL Python is fraught with uncertainty. Platform instability issues are expected, and users will need to rewrite working code to deal with no-GIL changes. Meanwhile, Python-compatible runtimes, such as Mojo, already provide the benefits of a no-GIL Python along with additional enhancements that make them vastly superior languages to use. Expect a [mass exodus to Mojo](https://www.theserverside.com/blog/Coffee-Talk-Java-News-Stories-and-Opinions/First-Mojo-Program-AI-ML-Hello-World-Number-Guesser-Modular) as the Python community tries to remove the GIL. ## It won't work The other big problem with no-GIL Python? It probably won't work. Take the word of Python creator Guido van Rossum himself, who [said in 2007](https://www.artima.com/weblogs/viewpost.jsp?thread=214235), "This has been tried before, with disappointing results, which is why I'm reluctant to put much effort into it myself." He echoed those 17-year-old sentiments again in a 2023 Lex Fridman [podcast episode](https://lexfridman.com/guido-van-rossum-2/). Even the experts are unsure if removing Python's GIL will work. While I wish them luck in the endeavor, the pursuit of a no-GIL Python runtime seems to me like a giant mistake. Darcy DeClute is a technical trainer and Agile coach who helps organizations apply Scrum-based principles to adopt a modern DevOps stack. She is a certified Professional Scrum Master, Professional Scrum Developer and Professional Scrum Product Owner as well as author of Scrum Master Certification Guide. Part of: Tips to optimize Python app performance Article 5 of 5 Up Next
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