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2026-07-02 - 07:39
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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 Thu Jul 02, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
310532327298,19sleep20-21swapper/219:07:282
311302284253,21sleep10-21swapper/119:08:281
311662263229,21sleep00-21swapper/019:08:550
312512259233,16sleep30-21swapper/319:09:583
209272670,0sleep20-21swapper/200:02:192
317432620,0sleep20-21swapper/219:10:132
313462580,0sleep30-21swapper/323:49:383
132122530,0sleep20-21swapper/219:40:122
200512190,0sleep10-21swapper/121:46:401
97432180,0sleep10-21swapper/120:45:011
220942180,0sleep30-21swapper/300:03:123
87922160,0sleep30-21swapper/322:37:393
52062160,0sleep20-21swapper/223:14:422
236462120,0sleep10-21swapper/122:27:151
3182100,2sleep1221ksoftirqd/123:30:191
313669998,1cyclictest28-21ksoftirqd/221:45:002
313589994,3cyclictest16348-40gzip00:00:000
798280,0sleep30-21swapper/323:50:153
313709985,2cyclictest275-21systemd-journal21:20:003
313709984,3cyclictest34-21ksoftirqd/300:00:013
313709983,4cyclictest504-21dbus-daemon19:55:113
313669984,3cyclictest658-21snmpd23:19:242
313589987,1cyclictest12-21ksoftirqd/023:00:000
9999270,0sleep00-21swapper/021:40:260
313709975,2cyclictest34-21ksoftirqd/300:15:193
313709974,2cyclictest491-21systemd-logind19:50:113
313709974,2cyclictest275-21systemd-journal19:25:013
313709973,3cyclictest658-21snmpd20:42:433
313709973,3cyclictest275-21systemd-journal23:41:043
313709973,3cyclictest17413-21cron19:50:003
313709972,4cyclictest0-21swapper/322:45:113
313709970,0cyclictest0-21swapper/300:36:453
313669974,2cyclictest504-21dbus-daemon22:43:482
313669973,3cyclictest504-21dbus-daemon23:05:002
313669973,3cyclictest30132sleep200:10:412
313669973,3cyclictest21647-21packagekitd21:15:062
313669971,4cyclictest526-21idleruntime-cro21:55:012
313669970,4cyclictest12931-21cron23:00:002
313629975,1cyclictest0-21swapper/122:41:031
313629973,3cyclictest658-21snmpd19:51:141
313629973,3cyclictest658-21snmpd00:31:051
313629973,2cyclictest275-21systemd-journal23:35:011
313629973,1cyclictest0-21swapper/122:16:051
313589976,1cyclictest12-21ksoftirqd/021:35:000
313589976,1cyclictest12-21ksoftirqd/019:20:000
313589974,2cyclictest29706-21ssh22:30:320
313589973,1cyclictest0-21swapper/022:38:560
2562270,0sleep30-21swapper/323:31:493
22163270,0sleep10-21swapper/121:10:121
313709966,0cyclictest0-21swapper/323:01:433
313709966,0cyclictest0-21swapper/321:10:353
313709963,2cyclictest6867-21expr19:25:133
313709963,2cyclictest501-21in:imuxsock23:21:303
313709963,2cyclictest32517-21ssh23:10:493
313709963,2cyclictest30398-21sh22:50:193
313709963,2cyclictest27808-21ssh21:32:243
313709963,2cyclictest27196-21sh00:05:443
313709963,2cyclictest24973-21cut20:05:133
313709963,2cyclictest24463-21rm21:49:593
313709963,2cyclictest21109-21ssh22:06:103
313709963,2cyclictest20511-21ssh00:21:163
313709963,2cyclictest17601-21sh21:26:063
313709963,1cyclictest0-21swapper/323:18:593
313709962,3cyclictest658-21snmpd23:08:483
313709962,3cyclictest658-21snmpd22:29:383
313709962,3cyclictest658-21snmpd21:58:003
313709962,3cyclictest658-21snmpd21:41:563
313709962,3cyclictest658-21snmpd21:06:253
313709962,3cyclictest658-21snmpd20:23:483
313709962,3cyclictest658-21snmpd20:15:033
313709962,3cyclictest658-21snmpd19:35:323
313709962,3cyclictest658-21snmpd19:10:533
313709962,3cyclictest5513-21ssh21:38:253
313709962,3cyclictest28466-21cat22:30:153
313709962,3cyclictest275-21systemd-journal22:10:483
313709962,3cyclictest275-21systemd-journal22:00:443
313709962,3cyclictest2647-21cat00:30:143
313709962,3cyclictest25773-21cat21:50:163
313709962,3cyclictest24398-21expr23:25:193
313709962,3cyclictest18329-21grep21:00:203
313709962,3cyclictest10948-21head20:45:173
313709962,1cyclictest141rcu_preempt20:35:133
313709962,1cyclictest0-21swapper/322:58:203
313709960,5cyclictest25950-21/usr/sbin/munin00:25:173
313709960,0cyclictest0-21swapper/323:37:573
313709960,0cyclictest0-21swapper/322:40:563
313709960,0cyclictest0-21swapper/320:10:123
313669963,2cyclictest893-21sh22:33:162
313669963,2cyclictest8877-21sh22:37:432
313669963,2cyclictest7023-21ssh23:54:282
313669963,2cyclictest658-21snmpd19:45:532
313669963,2cyclictest504-21dbus-daemon00:40:012
313669963,2cyclictest3305-21switchtime00:30:172
313669963,2cyclictest29806-21ntp_states20:15:192
313669963,2cyclictest21560-21taskset21:29:042
313669963,2cyclictest20432-21rm21:46:562
313669963,2cyclictest12967-21systemctl19:40:002
313669963,2cyclictest10713-21cron19:35:002
313669963,1cyclictest0-21swapper/222:20:522
313669962,3cyclictest658-21snmpd23:31:322
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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