[Bglug] slow repositories during last Tuesday build

Chris candive1 at gmail.com
Thu Jun 17 08:05:21 MST 2010


Hi all,

I found this reference to dead slow Repo downloads while checking out Mint.
Link to WebPage at bottom.

In particular, the dpkg package manager is known to run significantly slower
on ext4, causing installations using the server or alternate install CD to
take on the order of twice as long as before. ext4 does not guarantee atomic
renames of new files over existing files in the event of a power failure
shortly after the rename, and so dpkg needs to force the contents of the new
file out to disk before renaming it in order to avoid leaving corrupt
zero-length files after power failures. This operation involves waiting for
the disk significantly more than it strictly needs to, and so degrades
performance. If fast package management operations are most important to
you, then you should use ext3 instead.
(570805<https://bugs.launchpad.net/bugs/570805>)


https://wiki.ubuntu.com/LucidLynx/ReleaseNotes

Chris.
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