On Thu, 6 Dec 2007, David Rees wrote:
On Dec 6, 2007 1:06 AM, Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx> wrote:
On Wed, 5 Dec 2007, Jon Nelson wrote:
I saw something really similar while moving some very large (300MB to
4GB) files.
I was really surprised to see actual disk I/O (as measured by dstat)
be really horrible.
Any work-arounds, or just don't perform heavy reads the same time as
writes?
What kernel are you using? (Did I miss it in your OP?)
The per-device write throttling in 2.6.24 should help significantly,
have you tried the latest -rc and compared to your current kernel?
-Dave
2.6.23.9-- thanks will try out the latest -rc or wait for 2.6.24!
Justin.
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