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Re: man incredibly slow because it scans for share directory in PATH??
- From: Andrey Repin <anrdaemon at yandex dot ru>
- To: "Riedel,Till (TM)" <till dot riedel at kit dot edu>, cygwin at cygwin dot com
- Date: Sun, 12 Jun 2016 13:49:16 +0300
- Subject: Re: man incredibly slow because it scans for share directory in PATH??
- Authentication-results: sourceware.org; auth=none
- Authentication-results: smtp2o.mail.yandex.net; dkim=pass header dot i= at yandex dot ru
- References: <19074b1d-78d1-a425-5a79-434ce8b1d480 at kit dot edu>
- Reply-to: cygwin at cygwin dot com
Greetings, Riedel,Till (TM)!
> I traced down my problem with really slow man page views this:
> {{{
>>PATH="/usr/bin:/foo" strace man bar |grep 'foo/share'
> }}}
> I am getting this:
> {{{
> 13 39756 [main] man 6688 normalize_posix_path: src /foo/share/man
> 16 39772 [main] man 6688 normalize_posix_path: /foo/share/man =
> normalize_posix_path (/foo/share/man)
> 13 39785 [main] man 6688 mount_info::conv_to_win32_path:
> conv_to_win32_path (/foo/share/man)
> 12 39810 [main] man 6688 mount_info::conv_to_win32_path: src_path
> /foo/share/man, dst C:\tools\cygwin\foo\share\man, flags 0x3000A, rc 0
> 16 39912 [main] man 6688 mount_info::conv_to_win32_path:
> conv_to_win32_path (/foo/share)
> 14 39942 [main] man 6688 mount_info::conv_to_win32_path: src_path
> /foo/share, dst C:\tools\cygwin\foo\share, flags 0x3000A, rc 0
> }}}
> If my PATH is the real one this goes on forever, and generates some
> problems,like:
You have lots of duplicated, obsolete and overlapping paths in your %PATH%.
I suggest you start from some homecleaning.
Not to mention strange ones, like "/".
> {{{
>>time man bar
> No manual entry for bar
> real 0m23.650s
> user 0m0.000s
> sys 0m0.108s
> hanging e.g. on
> 20 2449004 [main] man 8124 mount_info::conv_to_win32_path: src_path
> //share/man, dst \\share\man, flags 0x4022, rc 0
> }}}
> VS.
> {{{
>>PATH=/usr/bin/ bash -c "time man bar"
> No manual entry for bar
> real 0m0.082s
> user 0m0.031s
> sys 0m0.045s
> }}}
> Any ideas why man does look for "share" in the whole path? Tbh I haven't
> looked at the man source code. Thx in advance!
--
With best regards,
Andrey Repin
Sunday, June 12, 2016 13:47:12
Sorry for my terrible english...
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