* Jeff Dike <[email protected]> wrote:
> On Wed, Nov 28, 2007 at 04:35:12PM +0100, Miklos Szeredi wrote:
> > Something like:
> >
> > dd if=/host/tmp/bigfile of=/tmp/bigfile bs=1048576 count=100
> >
> > and run 'top' or 'watch something' in another terminal, which
> > sometimes completely stops updating during the write.
>
> Are you talking about missing updates for a few seconds, or for
> longer? With the common above, with top -delay 1, and with 600M of
> data, I'm seeing occasional 2-3 pauses, with one missing 5 seconds.
even sub-second delays are a huge issue if the system is otherwise idle
- it signals some sort of missed event condition. scheduling must be
instantenous.
Ingo
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