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2026-04-26 - 02:56
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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 100 highest latencies:
System rackaslot8.osadl.org (updated Sun Apr 26, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
75702299238,50sleep00-21swapper/019:06:290
76982281251,19sleep20-21swapper/219:07:512
75252280250,19sleep10-21swapper/119:05:531
77722262231,21sleep30-21swapper/319:08:503
44382650,0sleep10-21swapper/122:30:191
111032640,0sleep20-21swapper/223:51:572
250682620,0sleep00-21swapper/000:20:130
109062600,0sleep20-21swapper/223:13:252
215672590,0sleep30-21swapper/321:23:573
133252580,0sleep10-21swapper/121:38:011
222532570,0sleep20-21swapper/223:20:142
224962560,0sleep30-21swapper/322:02:463
194422540,0sleep10-21swapper/122:40:001
174572540,0sleep30-21swapper/322:38:353
47742200,1sleep2271rcuc/223:10:002
281102190,1sleep20-21swapper/222:45:102
226192170,0sleep10-21swapper/122:02:531
205072170,0sleep20-21swapper/221:42:062
284162150,0sleep20-21swapper/221:27:372
279962140,0sleep10-21swapper/122:05:381
272242140,0sleep00-21swapper/021:26:430
135152140,0sleep00-21swapper/022:55:170
798199116,4cyclictest10289-21apt-get22:15:023
798199106,3cyclictest14491-21apt-get23:35:013
79819998,0cyclictest28838-21apt-get19:55:113
79819992,4cyclictest0-21swapper/322:44:003
79819990,6cyclictest10183-21ssh21:55:163
79819985,2cyclictest29876-21diskmemload22:10:123
79819984,3cyclictest16033-21fschecks_count23:55:133
79819983,4cyclictest20362-21perf23:00:003
79819983,4cyclictest0-21swapper/300:20:123
79819982,4cyclictest34-21ksoftirqd/323:05:373
79819982,4cyclictest34-21ksoftirqd/322:47:313
79819982,4cyclictest34-21ksoftirqd/321:36:013
79819982,4cyclictest0-21swapper/323:18:463
79819982,4cyclictest0-21swapper/322:53:563
79819982,4cyclictest0-21swapper/322:26:103
79819982,4cyclictest0-21swapper/322:06:143
79819981,5cyclictest34-21ksoftirqd/300:15:513
79819981,4cyclictest34-21ksoftirqd/323:25:403
79819981,4cyclictest0-21swapper/323:22:243
79819980,5cyclictest10569-21ssh00:10:533
79819980,3cyclictest16343-21cat19:25:173
79779984,3cyclictest275-21systemd-journal00:00:002
79749982,4cyclictest21323-21latency_hist23:20:001
79709986,1cyclictest10523-21apt-get22:15:110
23236280,0sleep00-21swapper/023:00:490
79819976,0cyclictest27909-21apt-get21:05:123
79819976,0cyclictest23718-21apt-get21:25:123
79819975,2cyclictest0-21swapper/319:50:123
79819974,2cyclictest7887-21gltestperf23:50:143
79819973,3cyclictest7288-21latency_hist20:20:013
79819973,3cyclictest504-21dbus-daemon00:00:013
79819973,3cyclictest325-21ls23:45:193
79819973,3cyclictest2088-21smartctl20:05:203
79819973,3cyclictest12816-21expr20:30:163
79819972,4cyclictest0-21swapper/321:00:123
79819972,3cyclictest34-21ksoftirqd/323:00:423
79819972,3cyclictest34-21ksoftirqd/321:45:243
79819972,3cyclictest0-21swapper/323:10:303
79819971,4cyclictest34-21ksoftirqd/321:41:523
79819971,4cyclictest34-21ksoftirqd/321:30:133
79819971,4cyclictest34-21ksoftirqd/321:10:023
79819971,4cyclictest34-21ksoftirqd/300:36:233
79819971,4cyclictest0-21swapper/323:31:183
79819971,4cyclictest0-21swapper/321:51:473
79819971,4cyclictest0-21swapper/320:55:503
79819971,4cyclictest0-21swapper/320:23:183
79819971,4cyclictest0-21swapper/320:04:253
79819971,4cyclictest0-21swapper/319:49:043
79819971,4cyclictest0-21swapper/319:33:343
79819971,4cyclictest0-21swapper/300:08:103
79819971,3cyclictest0-21swapper/323:42:103
79819971,3cyclictest0-21swapper/322:34:523
79819971,3cyclictest0-21swapper/322:22:223
79819971,3cyclictest0-21swapper/300:34:083
79819970,3cyclictest6446-21cpuspeed_turbos21:15:133
79779973,3cyclictest275-21systemd-journal00:39:592
79779970,6cyclictest2868-21ssh21:12:452
79779970,1cyclictest141rcu_preempt22:00:142
79749974,2cyclictest504-21dbus-daemon21:18:571
79749974,2cyclictest22-21ksoftirqd/121:00:001
79749973,3cyclictest504-21dbus-daemon23:50:001
79749972,1cyclictest23432-21awk00:00:001
79749971,3cyclictest11993-21munin-run22:55:001
79709974,2cyclictest21306-21cron23:20:000
79709973,3cyclictest658-21snmpd21:17:190
79709970,1cyclictest0-21swapper/022:40:120
3832270,0sleep30-21swapper/300:26:333
30402270,2sleep130403-21pmu-power23:05:191
13700270,0sleep20-21swapper/221:19:362
79819964,1cyclictest22467-21users20:50:203
79819963,2cyclictest275-21systemd-journal20:45:013
79819963,2cyclictest10765-21munin-node19:15:013
79819963,2cyclictest10144-21latency_hist19:15:013
79819962,3cyclictest22780-21hddtemp_smartct19:40:143
79819962,3cyclictest18696-21cat20:45:123
79819961,3cyclictest0-21swapper/320:36:493
79819961,3cyclictest0-21swapper/320:25:073
79819961,3cyclictest0-21swapper/320:10:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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