Dan Yocum <yocum@xxxxxxxx> wrote:
> What happened between 2.4.8 and 2.4.9 that the disk I/O performance would
> *dramatically* drop? With 2.4.8 I'm getting ~34MB/s writes and ~160MB/s
> reads. As of 2.4.9 this has dropped to ~10MB/s writes and 80-100MB/s
> reads. That's pretty bad. The problem was not fixed with 2.4.10 and is
> still the same as of 2.4.13pre6 - I haven't checked the latest in a couple
> weeks, maybe it's better?
> I've decided to drop back to 2.4.5 since 2.4.8 was regularly crashing the
> machines, the "kernel: __alloc_pages: 3-order allocation failed." errors
> seem to have gone away, and the performance is right up there.
I've got the same problem in 2.4.8, 2.4.9, 2.4.10... and plus a
xfs_force_shutdown problem in 2.4.9 in last month....
I change my kernel to 2.4.8mdk from mandrank (base on -ac)... last month.
It work great for me now! Running on a P3 1G SMP system with 1G ram
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