Hello Mike,
try as root
cyclictest -m -n -p 99 -t
All values in us
Min: 12 -> min latency
Act: 18 -> act latency
Avg: 19 -> avg latency
Max: 247 -> max latency
A good userspace realtime system has a max latency< 30 us.
Greatings
Andreas
Am 23.03.2012 10:30, schrieb Mike O'Connor:
On 23/03/12 7:18 PM, Andreas Stewering-Bone wrote:
Hello Mike,
please see
# KERNELGIT=git://git.kernel.org/pub/scm/linux/kernel/git
# git clone $KERNELGIT/clrkwllms/rt-tests.git
Use cyclictest.
Greatings
Andreas
Hi Again
Not sure how to understand the results, but this was run with the scan
time at 8K
# /dev/cpu_dma_latency set to 0us
policy: other/other: loadavg: 0.00 0.01 0.05 1/97 8944
T: 0 ( 8939) P: 0 I:1000 C:1248925 Min: 12 Act: 18 Avg: 19
Max: 247
Thanks
Mike
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Mit freundlichem Gruß
Andreas Stewering-Bone
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