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2026-04-02 - 12:37
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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 rack0slot5.osadl.org (updated Thu Apr 02, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41083849949514,29cyclictest0-21swapper/1122:01:323
41083389948617,28cyclictest0-21swapper/000:13:320
410838999463463,0cyclictest0-21swapper/1222:20:324
41083899945935,30cyclictest133-21ksoftirqd/1220:17:324
41083389945226,424cyclictest0-21swapper/021:51:540
41083939945127,29cyclictest142-21ksoftirqd/1321:27:325
41083899945129,28cyclictest0-21swapper/1200:17:324
41083939944824,29cyclictest0-21swapper/1323:59:285
41083389944215,30cyclictest0-21swapper/020:10:150
4108384994400,439cyclictest0-21swapper/1121:08:163
41083429944016,30cyclictest34-21ksoftirqd/122:17:321
410838499439439,0cyclictest0-21swapper/1119:35:533
410838499439438,1cyclictest1818-21snmpd20:47:263
4108384994390,438cyclictest0-21swapper/1123:53:163
41083899943815,30cyclictest133-21ksoftirqd/1221:50:324
410838499438438,0cyclictest0-21swapper/1123:20:553
410839699436435,1cyclictest0-21swapper/1421:06:556
4108361994369,29cyclictest0-21swapper/620:41:5512
4108361994368,29cyclictest0-21swapper/600:01:5512
4108361994359,30cyclictest0-21swapper/623:35:1612
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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