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Re: sync slowness. ext3 on VIA vt82c686b



Hi,

On Tue, Jul 02, 2002 at 10:20:51PM -0400, khromy wrote:
> When I copy a file(13Megs) from /home/ to /tmp/, sync takes almost 2 minutes. 
> When I copy the same file to /usr/local/, sync returns almost right away.  Both 
> filesystems are ext3 and are on the same harddrive.  When sync is running, 
> the harddrive light stays on but I don't hear it doing anything. dmesg doesn't 
> show any errors either. Below is the `time` output for each command.  If you 
> need anymore information  let me know..

Ugh.  My first guess would be that you have one enormously fragmented
filesystem.  13MB in 2 minutes?  A modern disk should get that amount
of data to disk in one second, but massive fragmentation can simply
kill disk performance.

If /home is on the same disk, do you get the same problem trying to
write there?

--Stephen





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