Messages in this thread | | | Date | Thu, 23 Mar 2006 07:21:41 -0600 | From | Rodney Gordon II <> | Subject | Re: [ck] 2.6.16-ck1 |
| |
On Thu, Mar 23, 2006 at 09:14:39PM +0800, Wu Fengguang wrote: > Hi Rodney, > > Thanks for your testing :) > > On Thu, Mar 23, 2006 at 05:31:18AM -0600, Rodney Gordon II wrote: > > Adaptive readahead: I had probs with this before, and I still do.. On > > a desktop if you have odd problems (nothing responding for SECONDS, > > very slow disk I/O during heavy I/O, etc..) disable it. > > Your problem on I/O latency with ara can be tracked down with the help > of Ingo's latency tracing patch. It goes like this: > > 1) download > http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.16.tar.bz2 > http://www.vanheusden.com/ara/adaptive-readahead-11-2.6.16-rc6.patch.gz > http://people.redhat.com/mingo/latency-tracing-patches/latency-tracing-v2.6.16.patch > > 2) > tar jxf linux-2.6.16.tar.bz2 > gunzip adaptive-readahead-11-2.6.16-rc6.patch.gz > cd linux-2.6.16 > patch -p1 < ../adaptive-readahead-11-2.6.16-rc6.patch > patch -p1 < ../latency-tracing-v2.6.16.patch > > 3) compile kernel with Adaptive readahead support > 4) boot with the new kernel, and run > echo 0 > /proc/sys/kernel/preempt_max_latency > 5) feel some latency problems > 6) report the content of /proc/latency_trace > > Thanks, > Wu
Will try this as soon as I can get some net drivers working under 2.6.16 ...
-r -- Rodney "meff" Gordon II -*- meff@pobox.com Systems Administrator / Coder Geek -*- Open yourself to OpenSource - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |