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2023-06-09 - 12:31

x86 Intel Core i3-2100T @2500 MHz, Linux 4.14.28-rt23 (Profile)

Latency plot of system in rack #0, 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 --smi -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 rack0slot0.osadl.org (updated Fri Jun 09, 2023 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
840321770,1sleep52845499cyclictest00:38:295
2452921430,0sleep224435-21sshd21:27:402
1991421350,0sleep70-21swapper/721:15:277
606521310,11sleep280550irq/25-eno1-rx-22:57:342
606521310,11sleep280550irq/25-eno1-rx-22:57:332
1157621230,3sleep62845899cyclictest22:08:006
2395921220,1sleep10-21swapper/122:38:171
1812221140,2sleep62845899cyclictest00:33:166
1596521140,1sleep215964-21sshd00:37:382
283442950,1sleep228336-21sshd21:47:432
82662900,2sleep4491rcuc/423:15:234
91172870,1sleep10-21swapper/123:30:521
293322870,0sleep10-21swapper/121:46:391
36972860,0sleep60-21swapper/600:39:266
269012860,1sleep30-21swapper/321:37:433
254102860,0sleep20-21swapper/222:29:292
185452860,0sleep10-21swapper/121:18:411
297232850,2sleep529626-21sshd22:38:295
288412850,0sleep30-21swapper/323:39:203
61222840,0sleep10-21swapper/123:57:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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