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2024-09-09 - 05:09
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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 20 highest latencies:
System rackfslot7.osadl.org (updated Mon Sep 09, 2024 00:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2226558997514,19cyclictest0-21swapper/120:00:341
2226564997435,19cyclictest2408946-21munin-run00:35:017
2226558997235,19cyclictest2370358-21diskstats23:25:131
2226558997232,39cyclictest0-21swapper/119:50:301
2226558997232,19cyclictest770-21mta-sts-daemon22:56:461
2226564997131,19cyclictest0-21swapper/723:46:117
2226564997031,18cyclictest1-21systemd21:45:147
2226558997031,19cyclictest0-21swapper/121:46:261
2226558997030,39cyclictest0-21swapper/119:37:561
2226564996930,19cyclictest0-21swapper/700:36:577
2226558996928,20cyclictest924-21runrttasks21:10:441
2226564996830,18cyclictest2226556-21cyclictest00:14:417
2226564996627,19cyclictest0-21swapper/700:22:017
2226564996526,19cyclictest0-21swapper/719:50:067
2226564996526,18cyclictest0-21swapper/722:34:447
222655899645,40cyclictest2239495-21/usr/sbin/munin19:30:201
2226558996326,18cyclictest24150irq/55-ahci[0000:00:07.0]00:30:231
222655899624,40cyclictest0-21swapper/123:40:251
2226558995818,19cyclictest3150ktimers/123:15:201
2226564995516,38cyclictest851ktimers/719:43:447
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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