On Fri, 2006-06-16 at 16:28 -0500, Gian Paolo Mureddu wrote:
Lee Revell escribió:
I would recommend you attack one issue at a time.
But yes, that will
work.
It might not even be the case anymore that reiser3 causes latency
problems - the -rt kernel and the introduction of the preemptible BKL
probably improved the situation. It has been a long time since I tested
it.
Lee
Hmm... it might be interesting to have a test case of this...
It should be trivial to make one. The -rt kernel is of course
unaffected, as all filesystem operations are offloaded to IRQ threads
and softirqd.
For testing the mainline kernel, use 2.6.16 with this patch:
http://people.redhat.com/mingo/latency-tracing-patches/latency-tracing-v2.6…
Generate a lot of disk activity (dbench, tiobench, etc) and
check /proc/latency_trace for reiserfs related entries.
Lee