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2021-10-24 - 01:14

Intel(R) Xeon(R) CPU E31220 @ 3.10GHz, Linux 4.19.8-rt6 (Profile)

Latency plot of system in rack #1, slot #0
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack1slot0.osadl.org (updated Sat Oct 23, 2021 12:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
816021180,0sleep28159-21bash11:31:502
771921090,0sleep00-21swapper/010:31:150
771921090,0sleep00-21swapper/010:31:150
45202900,0sleep30-21swapper/311:34:203
239182860,1sleep01-21systemd12:00:410
288762670,0sleep00-21swapper/011:50:110
126042670,0sleep00-21swapper/009:25:530
318802620,0sleep20-21swapper/212:12:252
280262620,1sleep227981-21sshd10:38:302
107052610,0sleep20-21swapper/210:23:202
266862600,0sleep20-21swapper/211:00:172
257692580,0sleep20-21swapper/211:25:092
231782580,0sleep30-21swapper/310:35:193
2117325834,7sleep30-21swapper/307:05:243
188212580,0sleep118818-21sshd11:49:201
175572580,0sleep30-21swapper/309:37:183
122382580,1sleep112235-21sshd10:56:201
111512580,0sleep10-21swapper/110:26:031
9932570,1sleep0995-21bash10:22:300
320642570,0sleep20-21swapper/212:37:092
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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