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2025-08-28 - 22:25
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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 Thu Aug 28, 2025 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4452221157,50sleep00-21swapper/007:08:440
3362220156,25sleep10-21swapper/107:07:251
326862211158,25sleep30-21swapper/307:05:543
5192206157,24sleep20-21swapper/207:09:392
310532690,0sleep20-21swapper/209:15:172
227242650,0sleep09-21ksoftirqd/007:54:380
98762640,0sleep20-21swapper/210:13:492
47462640,0sleep10-21swapper/111:33:581
52632600,1sleep325958-21diskmemload10:50:153
52892590,0sleep00-21swapper/009:25:050
665991818,0cyclictest35-21ksoftirqd/310:29:203
665991515,0cyclictest35-21ksoftirqd/312:09:063
665991514,1cyclictest35-21ksoftirqd/309:33:373
665991414,0cyclictest35-21ksoftirqd/310:18:073
665991413,1cyclictest35-21ksoftirqd/312:18:283
665991411,2cyclictest8396-21switchtime10:10:193
64399143,5cyclictest25390-21sed10:35:000
66599138,2cyclictest254-21systemd-journal07:15:003
665991313,0cyclictest35-21ksoftirqd/312:20:083
665991313,0cyclictest35-21ksoftirqd/311:46:163
665991313,0cyclictest35-21ksoftirqd/309:13:193
665991311,1cyclictest21731-21cpuspeed_turbos09:00:123
274302130,0sleep327433-21fschecks_time11:20:153
66599123,1cyclictest35-21ksoftirqd/309:29:133
665991212,0cyclictest35-21ksoftirqd/310:43:133
665991212,0cyclictest35-21ksoftirqd/310:33:153
665991212,0cyclictest35-21ksoftirqd/309:47:133
665991211,1cyclictest5589-21grep07:15:253
665991210,2cyclictest27643-21taskset09:54:123
665991210,1cyclictest26660-21sed10:35:163
665991210,1cyclictest13668-21diskstats09:35:163
64399124,4cyclictest31691-21latency_hist10:00:000
66599119,0cyclictest35-21ksoftirqd/312:35:143
665991111,0cyclictest35-21ksoftirqd/312:32:243
665991111,0cyclictest35-21ksoftirqd/311:10:123
665991111,0cyclictest35-21ksoftirqd/309:15:373
665991111,0cyclictest35-21ksoftirqd/308:28:543
665991111,0cyclictest35-21ksoftirqd/308:12:043
665991110,1cyclictest35-21ksoftirqd/311:32:393
665991110,1cyclictest23003-21apt-get07:55:123
665991110,0cyclictest35-21ksoftirqd/310:20:163
66599111,4cyclictest14200-21apt-get08:45:123
66599111,2cyclictest17100-21ntp_states07:40:193
66599109,1cyclictest25958-21diskmemload11:50:413
66599109,1cyclictest0-21swapper/309:43:143
66599108,1cyclictest24817-21users11:15:213
66599108,1cyclictest13177-21grep08:40:253
66599107,2cyclictest19199-21irqstats07:45:163
66599107,1cyclictest35-21ksoftirqd/307:55:003
66599105,4cyclictest341rcuc/309:05:213
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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