[Bug 570805] Re: [regression] dpkg's fsync causes massive regression in Ubuntu Server and Alternate installation times

Dustin Kirkland dustin.kirkland at gmail.com
Fri Jul 9 17:01:28 UTC 2010


10.04.1 candidate images are not yet available.

I did, however, measure the performance difference on a running system.

 1) Install Ubuntu 10.04 Server
 2) sudo apt-get update
 3) sudo apt-get dist-upgrade --download-only
     (32 updates available now)
 4) time sudo apt-get dist-upgrade
      takes 3m33s

Then:
 1) Install Ubuntu 10.04 Server
 2) Upgrade dpkg to -proposed
 3) sudo apt-get update
 4) sudo apt-get dist-upgrade --download-only
     (32 updates available now)
 5) time sudo apt-get dist-upgrade
      takes 1m52s

There's clearly a huge performance improvement.  I would like to see
this promoted from -proposed to -updates, and would very much like to
test this on a real ISO whenever that's available.

-- 
[regression] dpkg's fsync causes massive regression in Ubuntu Server and Alternate installation times
https://bugs.launchpad.net/bugs/570805
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