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2026-03-20 - 07:04
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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 Mar 20, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
305612292263,19sleep20-21swapper/219:06:442
307732275242,22sleep00-21swapper/019:09:120
305342275244,20sleep10-21swapper/119:06:231
305062269215,17sleep30-21swapper/319:06:013
189012670,0sleep20-21swapper/221:47:172
88832600,0sleep00-21swapper/019:30:130
83852600,0sleep10-21swapper/121:21:051
70272580,0sleep30-21swapper/322:00:083
302752570,0sleep10-21swapper/100:10:231
86962560,0sleep00-21swapper/000:36:480
134942560,0sleep30-21swapper/323:02:063
136402540,0sleep10-21swapper/122:42:461
326072190,0sleep30-21swapper/323:52:513
79792140,0sleep20-21swapper/221:20:452
213472140,0sleep30-21swapper/321:49:113
23412130,0sleep00-21swapper/023:34:580
199812130,0sleep20-21swapper/221:05:152
105052110,1sleep00-21swapper/020:45:150
3094499106,3cyclictest25790-21ssh21:31:442
309449997,1cyclictest28-21ksoftirqd/200:00:002
309409992,4cyclictest12468-21idleruntime-cro19:40:021
309479980,7cyclictest0-21swapper/323:25:123
309449986,1cyclictest28-21ksoftirqd/200:00:002
309449983,3cyclictest275-21systemd-journal19:54:032
309449983,3cyclictest275-21systemd-journal19:40:172
309449982,3cyclictest383-21munin-run20:25:002
309409985,2cyclictest658-21snmpd23:12:561
309409983,3cyclictest275-21systemd-journal23:57:441
309409980,1cyclictest29338-21perf21:15:001
309369983,4cyclictest0-21swapper/022:40:010
5709270,1sleep10-21swapper/100:15:201
309479973,3cyclictest658-21snmpd21:44:123
309479973,3cyclictest658-21snmpd21:01:343
309479973,3cyclictest275-21systemd-journal00:32:473
309479973,3cyclictest1194-21apt-get22:55:123
309479970,7cyclictest0-21swapper/321:15:323
309479970,7cyclictest0-21swapper/300:00:133
309449973,3cyclictest275-21systemd-journal21:00:012
309449973,3cyclictest11373-21memory23:20:152
309449973,1cyclictest0-21swapper/200:36:102
309449972,4cyclictest0-21swapper/222:55:152
309409970,6cyclictest32089-21dump-pmu-power22:35:011
309409970,1cyclictest0-21swapper/122:57:261
309369974,2cyclictest275-21systemd-journal22:47:140
309369974,2cyclictest11185-40mandb23:59:590
309369973,3cyclictest658-21snmpd23:41:380
309369973,3cyclictest658-21snmpd20:04:390
309369973,3cyclictest560-21gdbus21:30:010
309369972,3cyclictest275-21systemd-journal22:30:010
309369971,3cyclictest29344-21munin-run21:15:010
309369970,7cyclictest0-21swapper/022:27:540
309369970,4cyclictest701-21cron22:55:000
309369970,3cyclictest14930-21/usr/sbin/munin19:45:180
25055270,1sleep00-21swapper/000:27:120
19679270,0sleep20-21swapper/200:24:252
5997260,0sleep30-21swapper/300:35:163
4230260,0sleep20-21swapper/220:30:212
309479966,0cyclictest0-21swapper/321:51:313
309479964,1cyclictest11099-21head23:20:133
309479963,2cyclictest658-21snmpd19:51:543
309479963,2cyclictest4990-21sh23:16:073
309479963,2cyclictest4085-21sh22:36:483
309479963,2cyclictest27835-21sh22:50:593
309479963,2cyclictest275-21systemd-journal20:00:463
309479963,2cyclictest24994-21if_enp4s022:30:133
309479963,2cyclictest24554-21ssh00:07:223
309479963,2cyclictest18259-21ssh22:06:133
309479963,2cyclictest16346-21sh22:44:523
309479963,2cyclictest15059-21ntp_states21:25:173
309479963,2cyclictest13119-21ssh22:23:063
309479963,2cyclictest10677-21ssh21:22:493
309479962,3cyclictest658-21snmpd23:47:573
309479962,3cyclictest658-21snmpd23:32:203
309479962,3cyclictest658-21snmpd21:58:223
309479962,3cyclictest658-21snmpd20:45:103
309479962,3cyclictest658-21snmpd20:31:063
309479962,3cyclictest658-21snmpd20:12:363
309479962,3cyclictest658-21snmpd20:06:423
309479962,3cyclictest658-21snmpd19:47:453
309479962,3cyclictest658-21snmpd00:10:003
309479962,3cyclictest560-21gdbus21:05:063
309479962,3cyclictest275-21systemd-journal19:31:563
309479962,3cyclictest19580-21cat23:05:193
309479962,3cyclictest16403-21sshd23:43:033
309479962,1cyclictest141rcu_preempt23:10:203
309479962,1cyclictest0-21swapper/300:27:183
309479962,1cyclictest0-21swapper/300:22:383
309479960,6cyclictest0-21swapper/323:35:543
309479960,5cyclictest7335-21munin-run22:20:013
309479960,3cyclictest17574-21expr22:45:143
309449963,2cyclictest7146-21sh00:16:092
309449963,2cyclictest7096-21ssh22:19:502
309449963,2cyclictest465-21ssh23:33:342
309449963,2cyclictest401-21sh21:35:472
309449963,2cyclictest31195-21sh22:53:312
309449963,2cyclictest30198-21ssh21:54:352
309449963,2cyclictest30068-21ssh23:11:512
309449963,2cyclictest275-21systemd-journal00:13:362
309449963,2cyclictest1908-21ssh21:17:272
309449963,2cyclictest15754-21awk21:25:232
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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