Re: big rt latencies compared to non rt
From: John Ogness <john.ogness@linutronix.de>
Date: 2021-05-11 20:14:36
Hi Angelo, On 2021-05-11, Angelo Dureghello [off-list ref] wrote:
cyclictest --duration=180 -t=1 -m -Sp99 \ -i2000 -h3000 -q > histogram Average is near 16uS but there are some outside values near 40000, as
The first column is the latency in microseconds. The other columns (2nd-5th) is the count of times that latency was seen for a CPU.
000009 000000 000000 000000 000000 000010 000001 000000 000002 000000 000011 000002 000000 000000 000000 000012 000023 000006 000008 000004 000013 001565 001504 002010 001367 000014 000425 001959 000649 000700 000015 001447 001917 001129 001415 000016 034084 026118 040328 032334 000017 040537 015000 033773 041092 <-----
CPU3 saw a latency of 17us 41092 times. John Ogness