Your message dated Wed, 21 May 2014 22:33:59 +0000
with message-id <e1wnf5d-0006mb...@franck.debian.org>
and subject line Bug#712621: fixed in dhelp 0.6.21+nmu4
has caused the Debian Bug report #712621,
regarding dhelp_parse is performance killer
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
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--
712621: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=712621
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Package: dhelp
Version: 0.6.21+nmu2
Severity: serious
Justification: affects performance of almost every daily upgrade
I've recently installed dhelp (I used to have it installed, but
then it got uninstalled somehow) and noticed that performance of
doc-base post-installation trigger have dropped drastically.
Just compare the output of the following commands:
sudo chmod 644 /usr/sbin/dhelp_parse # disable dhelp
touch /usr/share/doc-base/doc-base
time sudo /usr/sbin/install-docs -dvC
with output of this:
sudo chmod 755 /usr/sbin/dhelp_parse # enable dhelp
touch /usr/share/doc-base/doc-base
time sudo /usr/sbin/install-docs -dvC
On my system with over 500 doc-base documents registered the second set
of commands is roughly 600 times slower!
`install-docs' usually calls `dhelp_parse' twice: once with `-d', and
once with `-a'. Both invocations of `dhelp_parse' rebuild the entire
index.html files. They read all the /var/lib/doc-base/documents to do this, but
what is more important for each such file THEY RE-READ THE WHOLE DPKG
STATUS & AVAILABLE DATABASES (to check if `man2html' and `info2www'
packages are installed)! See this output of strace command:
[1]/home/robert> sudo strace -r -e open,close /usr/sbin/dhelp_parse -d
/var/lib/doc-base/documents/doc-base
// snipped
0.000304 open("/var/lib/dpkg/available", O_RDONLY|O_LARGEFILE) = 3
2.933585 close(3) = 0
0.005428 open("/usr/share/doc/HTML/File management/index.html",
O_WRONLY|O_CREAT|O_TRUNC|O_LARGEFILE, 0666) = 3
0.001297 close(3) = 0
0.000634 open("/usr/share/dhelp/templates/section.rhtml",
O_RDONLY|O_LARGEFILE) = 3
0.000345 close(3) = 0
0.004470 open("/var/lib/dpkg/status", O_RDONLY|O_LARGEFILE) = 3
0.392373 close(3) = 0
0.000334 open("/var/lib/dpkg/available", O_RDONLY|O_LARGEFILE) = 3
2.975223 close(3) = 0
0.000762 open("/var/lib/dpkg/status", O_RDONLY|O_LARGEFILE) = 3
0.360588 close(3) = 0
0.000353 open("/var/lib/dpkg/available", O_RDONLY|O_LARGEFILE) = 3
3.090041 close(3) = 0
0.009219 open("/usr/share/doc/HTML/Help/index.html",
O_WRONLY|O_CREAT|O_TRUNC|O_LARGEFILE, 0666) = 3
0.000481 close(3) = 0
0.000501 open("/usr/share/dhelp/templates/section.rhtml",
O_RDONLY|O_LARGEFILE) = 3
0.001836 close(3) = 0
0.005520 open("/var/lib/dpkg/status", O_RDONLY|O_LARGEFILE) = 3
0.344722 close(3) = 0
0.006844 open("/var/lib/dpkg/available", O_RDONLY|O_LARGEFILE) = 3
3.144844 close(3) = 0
0.006779 open("/var/lib/dpkg/status", O_RDONLY|O_LARGEFILE) = 3
0.441762 close(3) = 0
0.000369 open("/var/lib/dpkg/available", O_RDONLY|O_LARGEFILE) = 3
// snipped
Regards,
robert
-- System Information:
Debian Release: jessie/sid
APT prefers unstable
APT policy: (990, 'unstable'), (200, 'testing')
Architecture: i386 (i686)
Kernel: Linux 3.8-1-686-pae (SMP w/1 CPU core)
Locale: LANG=pl_PL, LC_CTYPE=pl_PL (charmap=ISO-8859-2)
Shell: /bin/sh linked to /bin/dash
Versions of packages dhelp depends on:
ii doc-base 0.10.5
ii libdata-page-perl 2.02-1
ii libhtml-parser-perl 3.71-1
ii liblocale-gettext-perl 1.05-7+b1
ii libtemplate-perl 2.24-1
ii liburi-perl 1.60-1
ii perl-modules 5.14.2-21
ii poppler-utils 0.18.4-6
ii pstotext 1.9-6
ii ruby-bdb [libdb-ruby1.8] 0.6.5-7
ii ruby-debian 0.3.8+b1
ii ruby-gettext 2.3.9-1
ii ruby1.8 1.8.7.358-7
ii swish++ 6.1.5-2.2
ii ucf 3.0027
Versions of packages dhelp recommends:
ii chromium [www-browser] 27.0.1453.110-1
ii elinks [www-browser] 0.12~pre6-1
ii html2text 1.3.2a-16
ii konqueror [www-browser] 4:4.8.4-2
ii links [www-browser] 2.7-2
ii links2 [www-browser] 2.7-2
ii lynx-cur [www-browser] 2.8.8dev.15-2
ii netrik [www-browser] 1.16.1-1.1
ii w3m [www-browser] 0.5.3-8
Versions of packages dhelp suggests:
ii apache2-bin [httpd-cgi] 2.4.4-6
pn catdvi <none>
ii info2www 1.2.2.9-24
ii man2html 1.6g-6
-- debconf information excluded
--- End Message ---
--- Begin Message ---
Source: dhelp
Source-Version: 0.6.21+nmu4
We believe that the bug you reported is fixed in the latest version of
dhelp, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to 712...@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
David Suárez <david.sephi...@gmail.com> (supplier of updated dhelp package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmas...@ftp-master.debian.org)
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Format: 1.8
Date: Sun, 18 May 2014 13:18:39 +0200
Source: dhelp
Binary: dhelp
Architecture: source all
Version: 0.6.21+nmu4
Distribution: unstable
Urgency: low
Maintainer: Georgios M. Zarkadas <g...@member.fsf.org>
Changed-By: David Suárez <david.sephi...@gmail.com>
Description:
dhelp - online help system
Closes: 712621 732916 734523
Changes:
dhelp (0.6.21+nmu4) unstable; urgency=low
.
* Non-maintainer upload.
* Add support for newer ruby versions (Closes: #734523, #732916)
* Cache 'Dpkg.status' calls to not affect performance on every system
upgrade (Closes: #712621)
* Handle correctly arguments passed to '-a' and '-d' options
* Fix error when 'dhelp_parse' is called without arguments
* Fix Ruby warnings
* Change the encoding of Ruby files to UTF-8
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