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2026-04-04 - 06:32
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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 100 highest latencies:
System rack1slot1.osadl.org (updated Sat Apr 04, 2026 00:45:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
91762246156,77sleep00-21swapper/019:09:290
90692210150,21sleep30-21swapper/319:08:073
91932202161,27sleep20-21swapper/219:09:442
88712200161,26sleep10-21swapper/119:05:321
315582600,0sleep20-21swapper/200:35:152
9311991210,1cyclictest9-21ksoftirqd/023:55:000
932999119,1cyclictest35-21ksoftirqd/320:00:013
932499118,1cyclictest28-21ksoftirqd/220:00:002
931199119,1cyclictest9-21ksoftirqd/021:05:010
9311991110,1cyclictest9-21ksoftirqd/020:40:010
9311991110,1cyclictest9-21ksoftirqd/000:20:150
932999100,10cyclictest29675-21cat21:00:003
932499104,4cyclictest23583-21sh22:18:032
932499100,8cyclictest0-21swapper/220:13:222
932499100,6cyclictest14123-21apt-get21:25:122
931199109,1cyclictest9-21ksoftirqd/022:59:210
931199109,1cyclictest9-21ksoftirqd/022:05:120
931199109,1cyclictest9-21ksoftirqd/021:45:010
931199102,4cyclictest19450-21latency_hist19:30:010
251642100,1sleep20-21swapper/222:20:152
93299995,3cyclictest561-21nscd22:49:253
93299990,6cyclictest14966-21kworker/u8:222:40:163
93299990,6cyclictest14966-21kworker/u8:222:40:163
93299990,4cyclictest0-21swapper/300:33:583
93249999,0cyclictest0-21swapper/200:13:072
93249998,1cyclictest28-21ksoftirqd/222:50:012
93249998,1cyclictest28-21ksoftirqd/219:40:002
93249998,1cyclictest2301-21sh22:32:042
93249997,1cyclictest28-21ksoftirqd/220:30:002
93249991,1cyclictest0-21swapper/222:35:202
93249990,1cyclictest0-21swapper/223:40:112
93249990,1cyclictest0-21swapper/200:28:042
93119998,1cyclictest9-21ksoftirqd/023:09:590
93119998,1cyclictest9-21ksoftirqd/019:35:130
93119997,1cyclictest9-21ksoftirqd/022:20:150
93119997,1cyclictest9-21ksoftirqd/022:19:590
93119997,1cyclictest9-21ksoftirqd/022:00:000
93119997,1cyclictest9-21ksoftirqd/020:55:140
93119997,1cyclictest9-21ksoftirqd/020:55:010
93119997,1cyclictest9-21ksoftirqd/020:30:130
93119992,3cyclictest14686-21munin-run19:19:590
93119991,4cyclictest0-21swapper/023:25:010
93119990,1cyclictest240-21systemd-journal20:47:520
93299982,2cyclictest240-21systemd-journal23:34:423
93299980,5cyclictest0-21swapper/300:05:163
93249986,1cyclictest61650irq/122-eno122:25:152
93249986,1cyclictest61650irq/122-eno100:08:172
93249986,1cyclictest28-21ksoftirqd/222:09:592
93249980,7cyclictest0-21swapper/200:00:002
93249980,6cyclictest1982-21sendmail-mta22:57:562
93249980,4cyclictest1991-21diskmemload22:50:162
93119987,1cyclictest9-21ksoftirqd/021:45:130
93119987,1cyclictest9-21ksoftirqd/021:40:010
93119987,1cyclictest9-21ksoftirqd/021:20:140
93119985,1cyclictest9-21ksoftirqd/020:09:590
93119980,7cyclictest28099-21sh00:30:150
93119980,7cyclictest1463-21ssh00:37:570
93119980,7cyclictest10318-21ntp_states22:00:170
93119980,6cyclictest21528-21kworker/0:020:19:590
93119980,5cyclictest1991-21diskmemload23:55:100
93299976,1cyclictest21661-21ntpq20:40:173
93299976,1cyclictest1747-21ntpd23:05:593
93299975,1cyclictest31951-21ssh22:29:533
93299975,1cyclictest23792-21ssh22:18:343
93299975,1cyclictest15877-21fschecks_time22:50:153
93299973,2cyclictest240-21systemd-journal22:31:103
93299972,3cyclictest1991-21diskmemload23:57:203
93299971,4cyclictest17281-21apt-get19:25:103
93299971,4cyclictest0-21swapper/321:50:113
93299971,2cyclictest0-21swapper/319:31:413
93299970,5cyclictest0-21swapper/322:01:503
93299970,4cyclictest25876-21switchtime19:40:193
93299970,4cyclictest0-21swapper/300:10:103
93299970,2cyclictest0-21swapper/323:12:223
93249977,0cyclictest0-21swapper/200:15:352
93249976,1cyclictest61650irq/122-eno121:36:502
93249976,1cyclictest61650irq/122-eno121:20:172
93249976,1cyclictest61650irq/122-eno121:17:072
93249976,1cyclictest61650irq/122-eno100:30:112
93249976,1cyclictest61650irq/122-eno100:00:132
93249976,1cyclictest1991-21diskmemload21:10:002
93249976,1cyclictest18157-21cat19:25:142
93249976,1cyclictest0-21swapper/220:05:172
93249976,0cyclictest61650irq/122-eno123:29:202
93249975,1cyclictest61650irq/122-eno123:35:102
93249975,1cyclictest61650irq/122-eno123:00:162
93249975,1cyclictest61650irq/122-eno121:45:112
93249975,1cyclictest61650irq/122-eno120:40:122
93249975,1cyclictest25955-21cat23:45:152
93249974,3cyclictest15934-21ssh23:31:552
93249974,1cyclictest26776-21apt-get23:05:122
93199970,4cyclictest0-21swapper/122:18:461
93199970,3cyclictest0-21swapper/100:30:111
93199970,2cyclictest0-21swapper/123:12:221
93119977,0cyclictest9-21ksoftirqd/020:25:140
93119976,1cyclictest9-21ksoftirqd/022:10:140
93119976,1cyclictest9-21ksoftirqd/021:25:150
93119976,1cyclictest9-21ksoftirqd/020:10:170
93119976,1cyclictest9-21ksoftirqd/000:05:120
93119975,1cyclictest9-21ksoftirqd/022:40:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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