[issue7946] Convoy effect with I/O bound threads and New GIL
Sophist added the comment: > https://docs.google.com/document/d/18CXhDb1ygxg-YXNBJNzfzZsDFosB5e6BfnXLlejd9l0/edit 1. The steering committee hasn't given the go ahead for this yet, and we have no idea when such a decision will be made nor whether the decision with be yes or no. 2. Even after the decision is made "Removing the GIL will be a large, multi-year undertaking with increased risk for introducing bugs and regressions." 3. The promised performance gains are actually small by comparison to the existing project that Guido is running is hoping to achieve. It is unclear whether the no-gil implementation would impact those gains, and if so whether a small reduction in the large planned performance gains would actually more than wipe out the modest performance gains promised by the no-gil project. 4. Given that this "Removing the GIL will require making trade-offs and taking on substantial risk", it is easy to see that this project could come across an unacceptable risk or insurmountable technical problem at any point and thus fall by the wayside. Taking all of the above points together, I think that there is still merit in considering the pros and cons of a GIL scheduler. -- ___ Python tracker <https://bugs.python.org/issue7946> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7946] Convoy effect with I/O bound threads and New GIL
Sophist added the comment: > I think that we should focus our efforts on removing the GIL, now that we > have a feasible solution for doing so without breaking anything Is this really a thing? Something that is definitely happening in a reasonable timescale? Or are there some big compatibility issues likely to rear up and at best create delays, and at worse derail it completely? Can someone give me some links about this please? -- ___ Python tracker <https://bugs.python.org/issue7946> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7946] Convoy effect with I/O bound threads and New GIL
Sophist added the comment: Please see also https://github.com/faster-cpython/ideas/discussions/328 for a proposal for a simple (much simpler than BFS) GIL scheduler only allocating the GIL between runable O/S threads waiting to have ownership of the GIL, and using the O/S scheduler for scheduling the threads. -- nosy: +Sophist ___ Python tracker <https://bugs.python.org/issue7946> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16283] ctypes.util.find_library does not find all DLLs anymore
Sophist added the comment: http://stackoverflow.com/questions/23125857/python-os-path-exists-cant-locate-the-file-however-the-file-indeed-exsits gave me an explanation: That when running 32-bit apps on Win 64 C:\Windows\SysWOW64 is mapped to C:\Windows\system32. Copying the missing DLL to SysWOW64 made it work. NOTE: Original report was for 64-bit on 64-bit, so this is not necessarily an explanation of the original issue. -- ___ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue16283> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16283] ctypes.util.find_library does not find all DLLs anymore
Changes by Sophist <pyt...@sodalis.co.uk>: -- versions: -Python 3.7 ___ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue16283> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16283] ctypes.util.find_library does not find all DLLs anymore
Changes by Sophist <pyt...@sodalis.co.uk>: -- versions: +Python 2.7, Python 3.4, Python 3.5, Python 3.6, Python 3.7 ___ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue16283> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16283] ctypes.util.find_library does not find all DLLs anymore
Sophist added the comment:
Finding it impossible for PIP to install discid.
Tracked it down to this issue i.e.
os.path.isfile('C:\Windows\system32\discid.dll') == False when the dll exists.
Some other dlls in that directory result in True and some in False. I cannot
see any significant difference in security permissions that might cause this -
only difference is security permissions for some are inherited and some are not
inherited.
I get this on both Python 3.6.1 32-bit and 2.7.13 32-bit on Win 10 Pro 64-bit
Anniversary Edition 1607. I use ESET Smart Security 9 as AV.
--
nosy: +Sophist
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