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2023-10-04 - 08:17
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rackbslot7 (updated Wed Oct 04, 2023 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1100921150,4sleep2321ktimers/220:06:482
1100921150,4sleep2321ktimers/220:06:482
23328999962,23cyclictest2137-21munin-plugin-st22:06:463
2332899958,47cyclictest0-21swapper/322:52:013
271042930,4chrt27103-21sed23:37:292
271042930,4chrt27103-21sed23:37:292
2332899933,57cyclictest18301-21diskstats22:32:213
2251429212,43sleep00-21swapper/019:02:340
23328998448,15cyclictest41-21ksoftirqd/323:22:153
23328998141,33cyclictest41-21ksoftirqd/323:39:073
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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