Hi Wolfgang,

On Sun, Jun 29, 2008 at 10:31:57PM +0200, Wolfgang Grandegger wrote:

Hi Fu,

Luotao Fu wrote:

quoted

Hi Wolfgang,
I finally found some time and did some tests with your config file and the shiny
new 2.6.25.8-rt7

On Thu, Jun 19, 2008 at 04:04:10PM +0200, Wolfgang Grandegger wrote:

quoted

Hi Fu,

Luotao Fu wrote:
Keep in mind that I'm running Linux on a rootfs mounted via NFS.

I have exactly the same test configuration here.

Interesting, I'm able to trigger latencies up to 600 us with the command

  "# while ls; do ls /bin; done"

the same here, only I loop with "ls /", which is literally the same.

in a telnet session, but it takes a while.

quoted

Again everything looks just fine to me. Depending on which debugging Option are
turned on my max. results pended between 70 and 350 us. However I could not
produce any peak worst case values, which are so far away from the average like
in your case.

Could you send me your .config file? And what version of cyclictest are  
you using?

Will send it off-list to reduce the list traffic.

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