System slowdown on large disk writes

[Lennart Sorensen]

On Thu, Mar 02, 2006 at 01:17:50PM -0500, William O'Higgins Witteman wrote:
> I'm copying 500Mb to 4Gb files to another location on the same ext3
> (I think - how would I check?) 140-odd Gb partition.

I believe the default io schedular in 2.6 kernels is designed to handle
random io pretty nicely, but can be pretty unfair if doing lots of
sequential I/O.  Perhaps trying another io scheduler, or tuning it a bit
(it should have options in /sys or /proc somewhere) could make it
better.

Does it make all io sluggish or just other io to the same drive?

Len Sorensen
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