Re: huge improvement with per-device dirty throttling

Andi Kleen
2007-08-22T11:05:13Z

"Jeffrey W. Baker" <jwbaker@acm.org> writes:
>
> My system is a Core 2 Duo, 2GB, single SATA disk.

Hmm, I thought the patch was only supposed to make a real difference
if you have multiple devices? But you only got a single disk.

At least that was the case it was supposed to fix: starvation of fast
devices from slow devices.

Ok perhaps the new adaptive dirty limits helps your single disk
a lot too. But your improvements seem to be more "collateral damage" @)

But if that was true it might be enough to just change the dirty limits
to get the same effect on your system. You might want to play with
/proc/sys/vm/dirty_*

-Andi