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2023-10-03 - 04:52
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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 rack1slot2.osadl.org (updated Tue Oct 03, 2023 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2667224331,0sleep20-21swapper/219:03:442
2602924331,0sleep30-21swapper/319:02:333
2686323627,0sleep10-21swapper/119:05:591
2660423625,0sleep00-21swapper/019:02:580
27025991010,0cyclictest6959-21fschecks_count21:07:282
4160,0ktimersoftd/00-21swapper/022:14:320
4160,0ktimersoftd/00-21swapper/000:03:520
35160,0ktimersoftd/30-21swapper/322:14:323
339960,0migration/31787-21sh22:33:013
29935060,0irq/33-eth0-tx-0-21swapper/019:19:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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