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2026-07-17 - 12:10
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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 Fri Jul 17, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
318582298275,15sleep20-21swapper/219:05:542
319022282256,17sleep10-21swapper/119:06:291
321962259227,22sleep00-21swapper/019:09:590
320762253220,22sleep30-21swapper/319:08:283
304922640,0sleep30-21swapper/323:50:383
230542620,1sleep30-21swapper/300:05:473
23302600,0sleep30-21swapper/321:36:143
118712600,0sleep00-21swapper/019:35:120
215872590,0sleep30-21swapper/323:45:203
290912570,1sleep129070-21ssh23:30:221
135342570,0sleep00-21swapper/022:22:460
23622180,0sleep20-21swapper/223:53:572
288922170,0sleep30-21swapper/323:10:503
250292150,0sleep10-21swapper/123:28:281
42212140,0sleep20-21swapper/222:36:322
301702140,0sleep10-21swapper/122:52:221
3231399129,2cyclictest28-21ksoftirqd/219:20:022
127192120,0sleep30-21swapper/323:01:053
3231799119,1cyclictest34-21ksoftirqd/300:00:013
3231399119,2cyclictest28-21ksoftirqd/219:45:002
3231399118,2cyclictest28-21ksoftirqd/219:55:012
3231399118,2cyclictest28-21ksoftirqd/200:00:002
3231399109,1cyclictest28-21ksoftirqd/200:00:012
3231399108,1cyclictest28-21ksoftirqd/220:00:012
3231399108,1cyclictest28-21ksoftirqd/219:15:022
306392100,0sleep20-21swapper/221:15:032
9566290,0sleep30-21swapper/300:36:533
5574290,0sleep30-21swapper/323:35:433
3324290,3sleep012-21ksoftirqd/000:33:270
323139998,1cyclictest28-21ksoftirqd/220:30:002
323139998,1cyclictest28-21ksoftirqd/200:20:002
323139997,2cyclictest28-21ksoftirqd/200:40:012
323139997,1cyclictest28-21ksoftirqd/223:40:002
323139997,1cyclictest28-21ksoftirqd/221:05:012
323139997,1cyclictest28-21ksoftirqd/221:05:002
323139997,1cyclictest28-21ksoftirqd/221:00:012
24767290,0sleep20-21swapper/222:49:342
17907290,0sleep20-21swapper/221:26:162
5586280,0sleep20-21swapper/219:20:122
323139987,1cyclictest28-21ksoftirqd/223:50:012
323139987,1cyclictest28-21ksoftirqd/223:20:012
323139987,1cyclictest28-21ksoftirqd/222:55:022
323139987,1cyclictest28-21ksoftirqd/222:35:002
323139983,3cyclictest275-21systemd-journal23:30:112
323089984,3cyclictest504-21dbus-daemon19:45:011
323059987,1cyclictest12-21ksoftirqd/000:00:000
323059980,5cyclictest27492-21awk20:10:000
5853270,0sleep00-21swapper/023:35:570
5601270,0sleep00-21swapper/022:57:000
323179974,2cyclictest31341-21dump-pmu-power21:34:593
323179974,2cyclictest275-21systemd-journal21:44:553
323179974,2cyclictest275-21systemd-journal21:03:123
323179974,2cyclictest275-21systemd-journal21:03:123
323179974,2cyclictest275-21systemd-journal00:22:373
323179973,3cyclictest658-21snmpd22:42:253
323179973,3cyclictest658-21snmpd22:04:253
323179973,3cyclictest658-21snmpd20:37:423
323179973,3cyclictest2954-21ntpq20:25:173
323179973,3cyclictest275-21systemd-journal22:05:503
323179973,3cyclictest11316-21diskstats20:45:133
323179973,2cyclictest275-21systemd-journal19:20:023
323179973,1cyclictest0-21swapper/322:24:313
323179971,5cyclictest10143-21apt-get23:20:023
323139976,1cyclictest671-21ntpd00:29:402
323139976,1cyclictest28-21ksoftirqd/221:55:012
323139976,1cyclictest28-21ksoftirqd/221:50:012
323139976,1cyclictest28-21ksoftirqd/219:35:002
323139976,1cyclictest28-21ksoftirqd/219:30:002
323139976,1cyclictest271rcuc/223:00:142
323139973,3cyclictest275-21systemd-journal21:56:402
323139973,3cyclictest275-21systemd-journal20:52:422
323139973,3cyclictest275-21systemd-journal20:45:002
323139972,5cyclictest141rcu_preempt22:44:032
323139972,1cyclictest141rcu_preempt20:35:112
323139971,4cyclictest141rcu_preempt21:33:022
323139971,3cyclictest5355-21cron00:35:002
323139971,2cyclictest28-21ksoftirqd/219:45:012
323139970,7cyclictest0-21swapper/200:12:422
323139970,6cyclictest0-21swapper/223:10:172
323089974,2cyclictest501-21in:imuxsock22:17:291
323089973,3cyclictest658-21snmpd22:37:261
323089973,3cyclictest275-21systemd-journal19:16:481
323089973,1cyclictest0-21swapper/123:47:281
323089972,3cyclictest20934-21apt-get00:25:001
323089971,3cyclictest25263-21apt20:05:001
323059976,1cyclictest12-21ksoftirqd/022:30:010
323059976,1cyclictest12-21ksoftirqd/021:15:010
323059976,1cyclictest12-21ksoftirqd/020:20:010
323059975,1cyclictest12-21ksoftirqd/020:00:000
323059973,3cyclictest658-21snmpd21:58:540
323059973,3cyclictest658-21snmpd21:16:020
323059973,3cyclictest275-21systemd-journal21:36:590
323059972,2cyclictest29117-21rm00:29:430
323179966,0cyclictest0-21swapper/320:32:223
323179965,1cyclictest34-21ksoftirqd/321:29:593
323179964,1cyclictest30531-21sed20:15:163
323179963,2cyclictest7748-21ssh23:56:453
323179963,2cyclictest6576-21head00:15:223
323179963,2cyclictest4099-21ssh22:16:493
323179963,2cyclictest28889-21ssh21:52:463
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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