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2026-04-20 - 18:54
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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 rack1slot2.osadl.org (updated Mon Apr 20, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2207925655,0sleep20-21swapper/207:17:522
2232023927,0sleep30-21swapper/307:20:373
2204823525,0sleep10-21swapper/107:17:311
2199623423,0sleep00-21swapper/007:16:540
223949988,0cyclictest3524-21snmpd12:17:311
8305060,0irq/26-0000:00:13837-21awk12:15:412
35160,0ktimersoftd/30-21swapper/312:33:003
339960,0migration/36563-21sh11:14:293
339960,0migration/34202-21sh12:08:053
339960,0migration/328754-21sh09:51:323
339960,0migration/327059-21sh09:33:373
339960,0migration/32660-21munin-node10:35:533
339960,0migration/324291-21sh11:25:383
339960,0migration/318414-21taskset10:42:013
29815060,0irq/29-eth0-tx-19128-21munin-node07:40:570
29815060,0irq/29-eth0-tx-14092-21munin-node12:16:052
29805060,0irq/28-eth0-rx-32236-21perl12:25:563
29805060,0irq/28-eth0-rx-25461-21irqrtprio10:10:573
29805060,0irq/28-eth0-rx-0-21swapper/309:26:003
224029960,0cyclictest0-21swapper/210:30:262
223949960,0cyclictest0-21swapper/110:55:561
223949960,0cyclictest0-21swapper/110:30:231
223949960,0cyclictest0-21swapper/110:19:311
223949960,0cyclictest0-21swapper/107:50:411
223939960,0cyclictest1402-21diskmemload10:26:310
149960,0migration/05415-21fschecks_time09:40:550
149960,0migration/023049-21fschecks_count07:20:530
149960,0migration/02092-21taskset11:48:570
149960,0migration/017404-21sh10:25:360
149960,0migration/015188-21sh11:19:190
8305050,0irq/26-0000:00:32425-21basename10:15:422
8305050,0irq/26-0000:00:13005-21basename09:45:412
8305050,0irq/26-0000:00:0-21swapper/308:46:033
339950,0migration/34851-21latency_hist08:15:413
339950,0migration/332310-21kthreadcore08:55:593
339950,0migration/33154-21kthreadcore10:16:003
339950,0migration/331231-21fschecks_time09:55:563
339950,0migration/327853-21kthreadcore12:41:003
339950,0migration/327458-21kthreadcore11:06:003
339950,0migration/327055-21fschecks_time10:30:553
339950,0migration/325916-21taskset07:43:553
339950,0migration/325458-21taskset10:28:583
339950,0migration/325002-21kthreadcore08:05:593
339950,0migration/323263-21fschecks_count12:20:553
339950,0migration/322667-21aten2.4-expect07:20:513
339950,0migration/321769-21kthreadcore08:25:593
339950,0migration/319289-21kthreadcore10:05:593
339950,0migration/318572-21timerwakeupswit08:21:063
339950,0migration/31817-21sh09:20:543
339950,0migration/315591-21taskset08:45:213
339950,0migration/315474-21kthreadcore07:35:593
339950,0migration/313926-21cpuspeed_turbos11:00:553
339950,0migration/312606-21kthreadcore11:16:013
339950,0migration/312404-21aten_r1power_en09:05:523
339950,0migration/311566-21timerwakeupswit09:01:073
329950,0watchdog/38391-21chrt11:33:163
329950,0watchdog/33463-21munin-node07:26:003
329950,0watchdog/327352-21ssh12:01:373
329950,0watchdog/32729-21kthreadcore07:51:003
329950,0watchdog/30-21swapper/310:01:003
329950,0watchdog/30-21swapper/309:46:003
29815050,0irq/29-eth0-tx-23966-21rm12:20:582
29815050,0irq/29-eth0-tx-20600-21ssh11:01:462
29815050,0irq/29-eth0-tx-19864-21kthreadcore12:35:592
29815050,0irq/29-eth0-tx-1348-21munin-node08:36:050
29815050,0irq/29-eth0-tx-0-21swapper/212:26:012
29815050,0irq/29-eth0-tx-0-21swapper/212:06:382
29815050,0irq/29-eth0-tx-0-21swapper/212:05:182
29815050,0irq/29-eth0-tx-0-21swapper/211:39:282
29815050,0irq/29-eth0-tx-0-21swapper/211:34:012
29815050,0irq/29-eth0-tx-0-21swapper/211:22:262
29815050,0irq/29-eth0-tx-0-21swapper/211:12:192
29815050,0irq/29-eth0-tx-0-21swapper/210:50:032
29815050,0irq/29-eth0-tx-0-21swapper/210:09:222
29815050,0irq/29-eth0-tx-0-21swapper/210:01:582
29815050,0irq/29-eth0-tx-0-21swapper/209:46:012
29815050,0irq/29-eth0-tx-0-21swapper/209:40:252
29815050,0irq/29-eth0-tx-0-21swapper/009:21:170
29815050,0irq/29-eth0-tx-0-21swapper/009:10:500
29815050,0irq/29-eth0-tx-0-21swapper/009:05:570
29815050,0irq/29-eth0-tx-0-21swapper/008:56:010
29815050,0irq/29-eth0-tx-0-21swapper/008:41:000
29815050,0irq/29-eth0-tx-0-21swapper/008:10:580
29815050,0irq/29-eth0-tx-0-21swapper/007:45:560
29805050,0irq/28-eth0-rx-31530-21sh11:26:513
29805050,0irq/28-eth0-rx-20997-21chrt12:16:413
29805050,0irq/28-eth0-rx-12172-21df_abs11:55:553
29805050,0irq/28-eth0-rx-0-21swapper/312:45:493
29805050,0irq/28-eth0-rx-0-21swapper/312:36:023
29805050,0irq/28-eth0-rx-0-21swapper/312:11:003
29805050,0irq/28-eth0-rx-0-21swapper/311:50:443
29805050,0irq/28-eth0-rx-0-21swapper/311:45:563
29805050,0irq/28-eth0-rx-0-21swapper/311:43:483
29805050,0irq/28-eth0-rx-0-21swapper/311:35:583
29805050,0irq/28-eth0-rx-0-21swapper/310:56:453
29805050,0irq/28-eth0-rx-0-21swapper/310:46:013
29805050,0irq/28-eth0-rx-0-21swapper/310:20:533
29805050,0irq/28-eth0-rx-0-21swapper/309:41:493
29805050,0irq/28-eth0-rx-0-21swapper/309:35:583
29805050,0irq/28-eth0-rx-0-21swapper/308:50:593
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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