Hi Linus,
Cleaned up and corrected some bugs...
(memory_pressure... !
unintended reschedule removed)
Sadly the performance went down - slightly.
Latency looks even nicer. Still some spikes.
[sync and mmap002 behaviour not corrected]
/RogerL
Roger Larsson wrote:
>
> Hi Linus,
>
> [patch against linux-2.4.0-test3-pre2]
>
> I cleaned up kswapd and moved its reschedule point.
> Disk performance is close to the same.
> Latencies have improved a lot (tested with Bennos latencytest)
>
> * sync is still problematic
> * mmap002 (Quintinela) still gives a 212 ms latency
> (compared to 423 ms for the unpatched...)
> * other disk related latencies are down under 30 ms.
> (streaming read, copy, write)
> * the number of overruns has dropped considerably!
> (running 4 buffers with a deadline of 23 ms)
>
> /RogerL
>
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> Home page:
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