Alvin Starr wrote:
> Linux has a bit of a Feature;) in that when there is a lot of disk buffers
> that need to be written out to disk, Linux will write them all out at once
> and take some time to do it. While this is happning things will generaly
> grind to a halt.
Yep. Linux/x86 exhibits the same symptom, on a 32MB system no less...
part of the problem I'd bet is that Paul is reading from the /dev/zero
device, which if I'm not mistaken is used to allocate empty pages from
swap. So you've got the double whammy of disk buffer and swap activity
at once.
I don't see it when copying plain files. I'd be a little surprised if a
real application were seriously affected.
Jeff
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