Your message dated Thu, 25 Nov 2010 07:02:13 +0000
with message-id <e1plvqp-000487...@franck.debian.org>
and subject line Bug#588339: fixed in dpkg 1.15.8.6
has caused the Debian Bug report #588339,
regarding sync() causes significant dpkg unpack performance degradation on
tmpfs (pbuilder, piuparts, ...)
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
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact ow...@bugs.debian.org
immediately.)
--
588339: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=588339
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Package: dpkg
Version: 1.15.7.2
Severity: normal
Hi,
the fsync()/sync() changes done recently cause significant performance
loss of dpkg when used in chroot environments living on tmpfs.
For short-lived chroots that cause a lot of e.g. dpkg activity (e.g.
pbuilder environments while building, piuparts while testing, ...) I
prefer to have them on tmpfs in order to reduce the amount of I/O which
hits the disk - and get a significant speed boost that way.
Unfortunately since the last dpkg changes concerning sync()/fsync() this
no longer works out well - the continuous sync() from a "virtual" chroot
on tmpfs hits the physical system really hard, causing speed loss
factors between 3-5, probably more if multiple pbuilder builds/piuparts
tests are run in parallel.
Is there a possibility to disable the syncing when dpkg runs on tmpfs?
Andreas
-- System Information:
Debian Release: squeeze/sid
APT prefers stable
APT policy: (800, 'stable'), (700, 'testing'), (600, 'unstable'), (130,
'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.32-5-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages dpkg depends on:
ii coreutils 8.5-1 GNU core utilities
ii libbz2-1.0 1.0.5-4 high-quality block-sorting file co
ii libc6 2.11.2-2 Embedded GNU C Library: Shared lib
ii libselinux1 2.0.94-1 SELinux runtime shared libraries
ii xz-utils 4.999.9beta+20100527-1 XZ-format compression utilities
ii zlib1g 1:1.2.3.4.dfsg-3 compression library - runtime
dpkg recommends no packages.
Versions of packages dpkg suggests:
ii apt 0.7.25.3 Advanced front-end for dpkg
-- no debconf information
--- End Message ---
--- Begin Message ---
Source: dpkg
Source-Version: 1.15.8.6
We believe that the bug you reported is fixed in the latest version of
dpkg, which is due to be installed in the Debian FTP archive:
dpkg-dev_1.15.8.6_all.deb
to main/d/dpkg/dpkg-dev_1.15.8.6_all.deb
dpkg_1.15.8.6.dsc
to main/d/dpkg/dpkg_1.15.8.6.dsc
dpkg_1.15.8.6.tar.bz2
to main/d/dpkg/dpkg_1.15.8.6.tar.bz2
dpkg_1.15.8.6_amd64.deb
to main/d/dpkg/dpkg_1.15.8.6_amd64.deb
dselect_1.15.8.6_amd64.deb
to main/d/dpkg/dselect_1.15.8.6_amd64.deb
libdpkg-dev_1.15.8.6_amd64.deb
to main/d/dpkg/libdpkg-dev_1.15.8.6_amd64.deb
libdpkg-perl_1.15.8.6_all.deb
to main/d/dpkg/libdpkg-perl_1.15.8.6_all.deb
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 588...@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Guillem Jover <guil...@debian.org> (supplier of updated dpkg 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...@debian.org)
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Format: 1.8
Date: Thu, 25 Nov 2010 07:10:48 +0100
Source: dpkg
Binary: libdpkg-dev dpkg dpkg-dev libdpkg-perl dselect
Architecture: source amd64 all
Version: 1.15.8.6
Distribution: unstable
Urgency: low
Maintainer: Dpkg Developers <debian-d...@lists.debian.org>
Changed-By: Guillem Jover <guil...@debian.org>
Description:
dpkg - Debian package management system
dpkg-dev - Debian package development tools
dselect - Debian package management front-end
libdpkg-dev - Debian package management static library
libdpkg-perl - Dpkg perl modules
Closes: 584254 588339 595455 595927 596168 596519 597023 597651 598473 599923
600075 600240 601852 602518 604769
Changes:
dpkg (1.15.8.6) unstable; urgency=low
.
[ Raphaël Hertzog ]
* Ensure debian/source/local-options is always excluded from the source
package even if the user provides customized -i or -I options.
Closes: #597023
* Fix Dpkg::Version's handling of version with a debian revision but an
empty version (e.g. "-0.1"). Thanks to James Vega <james...@debian.org>
for the patch. Closes: #597651
* With "3.0 (quilt)" source package, create .pc/.quilt_series with the
correct series file if the source package provides vendor specific patch
sets.
.
[ Guillem Jover ]
* Disable by default usage of synchronous sync(2), as it causes undesired
I/O on unrelated file systems. Closes: #588339, #595927, #600075
* Add new --force-unsafe-io to disable safe I/O operations on unpack.
Closes: #584254
.
[ Updated man page translations ]
* French (Christian Perrier). Including a typo fix and a typographical
change reported by Vincent Danjean. Closes: #601852
* Spanish (Omar Campagne). Closes: #596519
.
[ Updated programs translations ]
* Basque (Iñaki Larrañaga Murgoitio). Closes: #599923
* Catalan (Jordi Mallach).
* Danish (Ask Hjorth Larsen). Closes: #600240
* German (Sven Joachim). Improved by Holger Wansing.
* Italian (Pietro Battiston). Fix translation of "however". Closes: #602518
* Portuguese (Miguel Figueiredo). Closes: #596168
* Romanian (Andrei Popescu). Closes: #604769
* Russian (Yuri Kozlov). Closes: #595455
* Vietnamese (Clytie Siddall). Closes: #598473
.
[ Updated scripts translations ]
* Catalan (Jordi Mallach).
* German (Sven Joachim).
.
[ Updated dselect translations ]
* Catalan (Jordi Mallach).
* German (Sven Joachim).
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libdpkg-perl_1.15.8.6_all.deb
Files:
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4102648a08a4416bfc3e4f4275a438e4 5222815 admin required dpkg_1.15.8.6.tar.bz2
1c45d231edef121f36a575a6322e928b 426852 libdevel optional
libdpkg-dev_1.15.8.6_amd64.deb
4525021598d6810dcb3fa114e5433ba1 2338026 admin required dpkg_1.15.8.6_amd64.deb
b5662cfacfb969c3db3668cab230729b 894426 admin optional
dselect_1.15.8.6_amd64.deb
85db60da1da45941fd1789d156bdbd01 801736 utils optional
dpkg-dev_1.15.8.6_all.deb
00816223970f7700379ef13d2110878b 682848 perl optional
libdpkg-perl_1.15.8.6_all.deb
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