Re: Abysmal interactive performance on 2.4.linus

Jason Lunz (j@trellisinc.com)
Mon, 12 Nov 2001 18:28:11 -0500

In mlist.linux-kernel, you wrote:
> Seems that reiserfs is the common factor here, at least on my box. This is a 35
> GB reiserfs filesystem, app 80% used, both large and small files.
>
> As said in my previous message, the numbers themselves don't mean squat. It is
> the large delays (the fact that user+sys <<< real) which are the problem here.

As another data point, I'm seeing the exact same thing. I haven't tried
any non-Linus kernels, though. But recent 2.4.x (x >= 10?) linus kernels
with reiserfs have these several-second delays during moderate-to-heavy
disk i/o, exactly as you've described. I've seen this on both an SMP
PIII system and a UP Athlon.

-- 
Jason Lunz		Trellis Network Security
j@trellisinc.com	http://www.trellisinc.com/
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