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2026-03-15 - 10:42
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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
Characteristics of the 50 highest latencies:
System rack1slot1.osadl.org (updated Sun Mar 15, 2026 00:45:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13702207151,22sleep10-21swapper/119:05:081
31782204150,43sleep30-21swapper/319:06:023
32612197158,25sleep20-21swapper/219:07:072
32122197156,26sleep00-21swapper/019:06:280
36242230,0sleep00-21swapper/021:59:130
164172150,0sleep00-21swapper/022:15:150
47202140,0sleep00-21swapper/000:05:130
3587991310,1cyclictest28-21ksoftirqd/223:59:592
3573991311,1cyclictest9-21ksoftirqd/020:20:010
3587991211,1cyclictest28-21ksoftirqd/219:15:002
357399124,4cyclictest24871-21perf23:50:000
358799110,0cyclictest0-21swapper/220:10:112
357399113,4cyclictest21064-21sort23:45:000
357399112,4cyclictest16299-21ls19:35:000
357399111,5cyclictest21029-21latency_hist19:45:000
359599107,1cyclictest35-21ksoftirqd/320:45:003
358799108,1cyclictest28-21ksoftirqd/219:35:012
3587991010,0cyclictest28-21ksoftirqd/222:48:142
3587991010,0cyclictest28-21ksoftirqd/222:48:132
357399108,1cyclictest9-21ksoftirqd/021:00:000
357399108,1cyclictest9-21ksoftirqd/019:15:000
35959999,0cyclictest35-21ksoftirqd/323:30:453
35739997,1cyclictest19573-21ssh23:00:160
35739994,2cyclictest240-21systemd-journal22:45:000
35959986,1cyclictest707-21snmpd23:21:453
35959986,1cyclictest707-21snmpd21:36:383
35959986,1cyclictest707-21snmpd21:30:433
35959986,1cyclictest707-21snmpd20:39:453
35959986,1cyclictest707-21snmpd20:29:503
35959986,1cyclictest707-21snmpd20:00:083
35959986,1cyclictest707-21snmpd19:26:463
35959986,1cyclictest35-21ksoftirqd/323:40:003
35879988,0cyclictest0-21swapper/222:27:212
35879986,1cyclictest61650irq/122-eno123:20:002
35879986,1cyclictest61650irq/122-eno121:20:172
35879986,1cyclictest28-21ksoftirqd/222:35:002
35879980,1cyclictest0-21swapper/221:42:552
35879980,0cyclictest0-21swapper/222:55:082
35739988,0cyclictest0-21swapper/023:07:030
35739987,1cyclictest9-21ksoftirqd/023:30:000
35739987,1cyclictest9-21ksoftirqd/021:20:000
35739986,1cyclictest707-21snmpd23:36:120
35739986,1cyclictest707-21snmpd20:28:380
35739986,1cyclictest707-21snmpd19:48:370
35739985,3cyclictest2884-21ntpq23:20:160
35739983,4cyclictest6903-21telnet22:45:110
35739983,4cyclictest6903-21telnet22:45:110
35739981,5cyclictest28982-21apt-get23:55:110
35739981,4cyclictest28882-21diskmemload21:24:370
35739980,3cyclictest0-21swapper/022:51:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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