m booted from flash. Neither I could produce
high latencies on nfs booted system. If my non-rt workload doesn't do heavy
filesystem/network accesses. i.E. running only hackbench. Hence we were
wondering if the problem is caused by rcu's in network layer or nfs
implementation.
regards
Luotao
ill now, I doubt
quite if this is verifiable.
regards
Luotao Fu
--
Dipl.-Ing. Luotao Fu | Phone: +49-5121-206917-3
Pengutronix - Linux Solutions for Science and Industry
Entwicklungszentrum Nord http://www.pengutronix.de
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atencies independently from the rcu
settings. I didn't spend a lot of time playing around with the GEN_BD
and dynamic clock. All I can say is that disabling them also cause high
latency. ;-) The average results don't differ significantly in my test runs.
cheers
Luotao Fu
--
Dipl.-Ing.
pose the unusual results are caused by network/Filesystemaccess.
However I have no idea what could be the reason for the "hole"s in the trace.
Looks almost like the cpu is doing nothing. As I don't have a trace on other
architecture at hand at the moment. I can't say for 100 procent
in a while 1 loop and a "ping -f" from a host machine. I run the
test for about 3 hours and could not push the latency to higher than 220 us.
(The latency tracer is also turned on in kernel). Could you please send me your
kernelconfig privately?
cheers
Luotao Fu
--
Dipl.-Ing. Lu
and make latency trace.
(tested with -b switch in cyclictest). Please comment.
I made my patch against the -rt2 tree since the dummy call early_printk() in
-rt3 conflicts with our implementation of a functional early_printk(). It
should also work with -rt3 though.
cheers
Luotao Fu
--
Dipl.-Ing
Hi Steven,
On Tue, Jan 15, 2008 at 01:06:25PM -0500, Steven Rostedt wrote:
>
>
> On Tue, 15 Jan 2008, Luotao Fu wrote:
> >
> > Compiling with tracing function turned seemed still to be broken to me:
>
> Could you email me your config (privately)
will send it la
_enabled is used in the tracer at
all. Could you give me some hints on this one?
cheers
Luotao Fu
--
Dipl.-Ing. Luotao Fu | Phone: +49-5121-206917-3
Pengutronix - Linux Solutions for Science and Industry
Entwicklungszentrum Nord http://www.pengutronix.de
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