This bug was fixed in the package dpkg - 1.18.10ubuntu1.1
---
dpkg (1.18.10ubuntu1.1) yakkety; urgency=medium
* Cherry-pick patch from git to limit preallocation to files over
16KiB, fixing installation performance regression (LP: #1663749)
-- Adam Conrad Mon, 10 Apr 2017 04
This bug was fixed in the package dpkg - 1.18.4ubuntu1.2
---
dpkg (1.18.4ubuntu1.2) xenial; urgency=medium
* Cherry-pick patch from git to limit preallocation to files over
16KiB, fixing installation performance regression (LP: #1663749)
-- Adam Conrad Mon, 10 Apr 2017 04:08
I was asked to test this bug on a slower non-SSD disk. Checked zesty,
yakkety and xenial. The detailed test result:
zesty:
- 1.18.10ubuntu1:
real0m39.559s
user0m7.176s
sys 0m8.780s
- 1.18.10ubuntu2:
real0m20.273s
user0m6.096s
sys 0m7.164s
yakkety:
- 1.18.9ubuntu2
real0m38.154s
This bug was fixed in the package dpkg - 1.18.10ubuntu2
---
dpkg (1.18.10ubuntu2) zesty; urgency=medium
* Cherry-pick patch from git to limit preallocation to files over
16KiB, fixing installation performance regression (LP: #1663749)
-- Adam Conrad Mon, 10 Apr 2017 04:08:19
Hello Vinson, or anyone else affected,
Accepted dpkg into xenial-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/dpkg/1.18.4ubuntu1.2
in a few hours, and then in the -proposed repository.
Please help us by testing this new package. See
https://wiki.u
** Also affects: dpkg (Ubuntu Yakkety)
Importance: Undecided
Status: New
** Also affects: dpkg (Ubuntu Xenial)
Importance: Undecided
Status: New
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** Tags added: xenial
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https://bugs.launchpad.net/bugs/1663749
Title:
Backport "libdpkg: Only preallocate disk size for files bigger than 16
KiB".
To manage notifications about this
** Tags added: yakkety zesty
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https://bugs.launchpad.net/bugs/1663749
Title:
Backport "libdpkg: Only preallocate disk size for files bigger than 16
KiB".
To manage notifications abou
Triaging as high, because this has a moderate negative performance
impact/regression on *all* Ubuntu users, and is adversely impacting at
least one substantially large deployment's Xenial rollout. (albeit with
a hacky workaround)
** Changed in: dpkg (Ubuntu)
Importance: Undecided => High
** C
Here is a test case than be used to benchmark the performance with and
without the fix.
$ wget
https://packages.chef.io/files/stable/chefdk/1.1.16/ubuntu/16.04/chefdk_1.1.16-1_amd64.deb
$ time sudo dpkg --install chefdk_1.1.16-1_amd64.deb
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** Changed in: dpkg
Status: Unknown => Fix Released
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https://bugs.launchpad.net/bugs/1663749
Title:
Backport "libdpkg: Only preallocate disk size for files bigger than 16
KiB".
** Bug watch added: Debian Bug tracker #824636
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=824636
** Also affects: dpkg via
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=824636
Importance: Unknown
Status: Unknown
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: dpkg (Ubuntu)
Status: New => Confirmed
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Title:
Backp
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