The specific problem is related to gnome point-n-click only.
Anyway, I could be wrong, but i don't think it is a bug in gnome because:
1. it affects specifically local XFS filesystems only
2. the problem is not present on kernel 2.6.15 (I tested 2.6.17 and
2.6.15, both on ubuntu 6.10)
3. the problem does not manifest if i disable the call to
gnome_vfs_forget_cache, that, for what i understand, simply calls
fadvice POSIX_FADV_DONTNEED.
More info can be found on gnome bugzilla entry.
Francesco Degrassi
Eric Sandeen wrote:
fdegrassi wrote:
Hi all,
i noticed that changing from kernel 2.6.15 to 2.6.17, gnomevfs-copy
operations suffered an heavy performance hit (20 times slower).
I checked quickly (i am not a kernel hacker) and i think it could be
related to libgnomevfs calling fadvice POSIX_FADV_DONTNEED (in
gnome_vfs_forget_cache, disabling this behaviour gets back normal
performance).
I am not able to dig deeper than this, anyway it could be a starting
point.
The relevant gnome bugzilla reference is the following:
http://bugzilla.gnome.org/show_bug.cgi?id=363400
Francesco Degrassi
Is a copy command from the shell affected, or just gnome point-n-click?
-Eric
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