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2026-06-15 - 15:07
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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 Mon Jun 15, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
67492299273,17sleep20-21swapper/219:08:242
67812285258,17sleep10-21swapper/119:08:471
65252269239,20sleep00-21swapper/019:05:450
65062256224,22sleep30-21swapper/319:05:323
161492610,0sleep20-21swapper/221:40:472
150242610,0sleep00-21swapper/022:00:160
36382590,0sleep30-21swapper/322:32:553
223182590,0sleep10-21swapper/100:02:251
224852570,0sleep30-21swapper/322:05:073
130662570,0sleep00-21swapper/023:37:340
83702560,0sleep00-21swapper/023:54:400
69452560,0sleep20-21swapper/221:35:182
314602560,0sleep10-21swapper/121:10:221
239912560,0sleep30-21swapper/323:44:383
145022560,0sleep30-21swapper/323:18:553
247072540,0sleep20-21swapper/223:45:002
141942190,0sleep00-21swapper/000:36:320
90962170,0sleep00-21swapper/022:35:470
304902170,0sleep30-21swapper/321:50:143
199632170,0sleep20-21swapper/222:03:342
153892170,0sleep30-21swapper/323:58:433
233092150,0sleep30-21swapper/300:03:113
33192140,0sleep20-21swapper/223:11:342
83802100,0sleep10-21swapper/123:35:061
8237290,0sleep30-21swapper/321:35:593
2319290,0sleep20-21swapper/221:32:462
69859986,1cyclictest0-21swapper/322:11:023
69859983,3cyclictest275-21systemd-journal22:35:113
69819980,6cyclictest275-21systemd-journal19:11:522
69779987,1cyclictest22-21ksoftirqd/100:15:011
4279280,0sleep30-21swapper/300:10:483
69859975,1cyclictest18016-21ssh23:00:433
69859974,2cyclictest658-21snmpd22:21:253
69859973,3cyclictest504-21dbus-daemon23:15:013
69859973,3cyclictest504-21dbus-daemon20:00:003
69859973,2cyclictest28946-21sshd21:07:133
69859972,3cyclictest275-21systemd-journal19:51:583
69819973,3cyclictest658-21snmpd20:13:382
69819973,3cyclictest658-21snmpd19:42:412
69819973,3cyclictest658-21snmpd19:17:442
69819973,3cyclictest32116-21ntpq22:30:192
69819973,3cyclictest275-21systemd-journal23:31:022
69819973,3cyclictest275-21systemd-journal20:50:002
69819972,3cyclictest29690-21dump-pmu-power21:50:002
69819971,3cyclictest22784-21ls22:45:012
69819970,7cyclictest51250irq/139-enp4s0-21:52:302
69779976,1cyclictest22-21ksoftirqd/122:55:021
69779976,1cyclictest22-21ksoftirqd/122:40:011
69779976,1cyclictest22-21ksoftirqd/119:55:001
69779975,2cyclictest22-21ksoftirqd/119:40:001
69779974,2cyclictest504-21dbus-daemon19:40:401
69779974,2cyclictest275-21systemd-journal23:10:021
69779973,3cyclictest275-21systemd-journal21:24:591
69779973,1cyclictest0-21swapper/122:01:231
69779970,4cyclictest22788-21latency_hist22:45:011
69749975,1cyclictest17068-40ogrotate00:00:010
69749975,1cyclictest12-21ksoftirqd/000:00:010
69749974,2cyclictest275-21systemd-journal22:27:240
69749974,2cyclictest12-21ksoftirqd/022:45:020
69749973,3cyclictest275-21systemd-journal23:42:390
69749973,3cyclictest275-21systemd-journal22:30:340
69749973,3cyclictest275-21systemd-journal19:10:340
69749973,3cyclictest16727-21apt-get19:30:130
69749973,2cyclictest24078-21perf23:25:000
2320270,0sleep20-21swapper/221:12:572
21766270,0sleep10-21swapper/123:03:401
69859966,0cyclictest0-21swapper/321:58:173
69859963,2cyclictest8277-21ssh22:15:243
69859963,2cyclictest658-21snmpd20:41:033
69859963,2cyclictest658-21snmpd19:40:423
69859963,2cyclictest504-21dbus-daemon20:00:163
69859963,2cyclictest30407-21fschecks_time21:30:143
69859963,2cyclictest27186-21ssh23:06:303
69859963,2cyclictest26806-21hddtemp_smartct00:05:143
69859963,2cyclictest25735-21sh21:27:083
69859963,2cyclictest24987-21acpi21:00:113
69859963,2cyclictest24390-21sh21:45:523
69859963,2cyclictest23621-21ssh00:22:483
69859963,2cyclictest19229-21ssh21:23:253
69859963,2cyclictest15170-21ntpq22:00:173
69859962,3cyclictest658-21snmpd23:24:383
69859962,3cyclictest658-21snmpd22:53:163
69859962,3cyclictest658-21snmpd22:28:503
69859962,3cyclictest658-21snmpd20:55:163
69859962,3cyclictest658-21snmpd20:55:163
69859962,3cyclictest658-21snmpd20:51:543
69859962,3cyclictest658-21snmpd19:36:003
69859962,3cyclictest658-21snmpd19:18:103
69859962,3cyclictest275-21systemd-journal20:15:003
69859962,3cyclictest26137-21grep23:25:203
69859962,3cyclictest18453-21seq19:32:133
69859962,3cyclictest14605-21cat21:40:153
69859962,3cyclictest1304-21cat23:50:123
69859962,3cyclictest1228-21cat23:30:153
69859962,1cyclictest0-21swapper/300:30:103
69859960,6cyclictest0-21swapper/323:36:203
69859960,6cyclictest0-21swapper/322:49:173
69859960,6cyclictest0-21swapper/322:40:303
69859960,6cyclictest0-21swapper/300:25:453
69859960,2cyclictest7574-21/usr/sbin/munin22:55:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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