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2025-12-12 - 13:03
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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 Fri Dec 12, 2025 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
267322212157,43sleep10-21swapper/119:07:031
248422202161,27sleep20-21swapper/219:05:032
269322198159,26sleep30-21swapper/319:09:373
267262198161,24sleep00-21swapper/019:06:570
49722750,0sleep00-21swapper/019:30:010
125902580,0sleep20-21swapper/223:15:072
27078991212,0cyclictest28-21ksoftirqd/222:55:212
27078991210,1cyclictest28-21ksoftirqd/222:10:202
27078991210,1cyclictest28-21ksoftirqd/222:10:202
27078991210,1cyclictest28-21ksoftirqd/220:00:002
2707899119,1cyclictest28-21ksoftirqd/221:00:002
2707899119,1cyclictest28-21ksoftirqd/219:44:592
27078991110,1cyclictest28-21ksoftirqd/223:05:222
2706299119,1cyclictest9-21ksoftirqd/019:15:000
27062991110,1cyclictest9-21ksoftirqd/020:40:000
2706299111,5cyclictest12080-21latency_hist19:45:000
27084991010,0cyclictest35-21ksoftirqd/321:42:133
2707899109,1cyclictest28-21ksoftirqd/223:20:182
2707899109,1cyclictest28-21ksoftirqd/222:55:002
2707899109,1cyclictest28-21ksoftirqd/200:05:232
2707899108,1cyclictest28-21ksoftirqd/200:10:252
27078991010,0cyclictest28-21ksoftirqd/223:04:562
27078991010,0cyclictest28-21ksoftirqd/222:49:472
2707899100,0cyclictest0-21swapper/200:24:492
2707199100,9cyclictest0-21swapper/122:35:161
2706299102,4cyclictest30296-21sed23:40:000
27062991010,0cyclictest0-21swapper/020:20:210
2706299100,7cyclictest19963-21diskmemload00:25:180
270849994,4cyclictest15866-1kworker/u9:122:34:433
270849990,2cyclictest0-21swapper/322:55:143
270789998,1cyclictest28-21ksoftirqd/223:55:162
270789998,1cyclictest28-21ksoftirqd/223:40:222
270789998,1cyclictest28-21ksoftirqd/222:05:192
270789998,1cyclictest28-21ksoftirqd/221:30:202
270789998,1cyclictest28-21ksoftirqd/200:35:272
270789998,1cyclictest28-21ksoftirqd/200:15:002
270789998,0cyclictest28-21ksoftirqd/223:46:402
270789997,1cyclictest28-21ksoftirqd/221:45:172
270789994,4cyclictest1158-21irqstats19:20:182
270629998,1cyclictest9-21ksoftirqd/023:55:310
270629998,1cyclictest9-21ksoftirqd/021:15:010
270629998,1cyclictest9-21ksoftirqd/020:05:130
20467290,0sleep10-21swapper/122:40:141
270849987,1cyclictest19207-21mailstats21:05:263
270849984,2cyclictest254-21systemd-journal23:22:513
270849984,2cyclictest254-21systemd-journal22:04:493
270849984,2cyclictest254-21systemd-journal00:39:563
270849983,2cyclictest254-21systemd-journal23:19:063
270849981,4cyclictest15957-21/usr/sbin/munin00:05:183
270789988,0cyclictest28-21ksoftirqd/221:19:262
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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