Messages in this thread | | | Date | Wed, 05 Jul 2000 02:50:45 +0200 | From | Roger Larsson <> | Subject | Re: [PATCH] latency improvements, one reschedule moved |
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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 > > -- > Home page: > http://www.norran.net/nra02596/ > > ------------------------------------------------------------------------ > Name: patch-2.4.0-test3-pre2-vmscan.latency.2 > patch-2.4.0-test3-pre2-vmscan.latency.2 Type: Plain Text (text/plain) > Encoding: 7bit
-- Home page: http://www.norran.net/nra02596/
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