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On 10/22/2013 08:38 AM, Allan Wegan wrote: |
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> |
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> Has the bottleneck already been identified? Python should not be |
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> much slower than other languages for solving mostly IO-based |
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> problems. |
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|
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When you emerge something with a bazillion files, the install wrapper |
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(and thus the python interpreter) get launched that many times. It's |
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the startup time that kills it. |
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|
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I tried to write a 'cp' wrapper once for a similar reason (it doesn't |
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preserve posix ACLs), and it's not as easy as it sounds to just |
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"rewrite it in C" or do the PAX markings after 'install'. The problem |
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you run into is that it's very difficult to figure out where 'install' |
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put the file without reimplementing all of 'install'. |
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|
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But we do have an advantage in portage: we sandbox things before |
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moving them to the real filesystem, so portage actually knows all of |
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the files that will got 'install'ed and where they'll wind up. If we |
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sandbox the PAX markings as well, it should be possible to hit those |
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files with paxctl-ng after they've been moved to the real root. |
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|
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I believe the sandbox option is what Anthony listed here as option #4: |
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|
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https://bugs.gentoo.org/show_bug.cgi?id=465000 |
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|
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