30 Sep
2005
30 Sep
'05
8:25 a.m.
Hi!
Alle 16:18, mercoledì 28 settembre 2005, Mark Knecht ha scritto:
I believe that you are using anticipatory. I don't
know which one is
best for low latency.
You can try each one (I think) by adding a boot time option to grub.conf
elevator=deadline
or
elevator=cfq
for example.
I've been interested in this also, but not enough to try and develop a
real test. I suspect you'll have to run for a while to make a real
determination.
I read at
http://www.jacklab.net/index.php?option=com_content&task=blogcategory&a…
that you should use the Realtime Preemption Patch and then enable it.
I'm running a 2.6.12 kernel patched with this and using also the realtime-lsm
module.
But now I'm confused, because
1) "less /sys/block/hda/queue/scheduler" gives me "noop [anticipatory]
deadline cfq", so where is the realtime preemption? Is it useful since you do
not even mention it?
2)I discovered that the rlimits way it's better: is it true? Is it also
simpler than loading the realtime module, which I can do in a straightforward
way?
Byez!
Carotinho
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