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2026-08-18 - 00:42
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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 50 highest latencies:
System rack1slot2.osadl.org (updated Mon Aug 17, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
563023829,0sleep10-21swapper/107:27:121
562223726,0sleep30-21swapper/307:27:063
560623324,0sleep20-21swapper/207:26:532
587323127,0sleep00-21swapper/007:29:590
35160,0ktimersoftd/30-21swapper/310:54:203
339960,0migration/36625-21aten_r1power_en09:00:393
339960,0migration/332358-21munin-node12:25:493
339960,0migration/325489-21sh09:35:073
339960,0migration/321966-21sh11:45:003
339960,0migration/317150-21munin-node08:00:393
339960,0migration/313491-21sh11:40:113
339960,0migration/313491-21sh11:40:113
339960,0migration/312051-21idleruntime09:45:423
329960,0watchdog/38657-21ssh09:40:493
29805060,0irq/28-eth0-rx-6512-21aten_r1power_en10:20:393
29805060,0irq/28-eth0-rx-4643-21diskstats12:50:403
29805060,0irq/28-eth0-rx-30724-21ssh10:32:083
29805060,0irq/28-eth0-rx-29986-21perl11:30:423
29805060,0irq/28-eth0-rx-19893-21grep10:25:463
29805060,0irq/28-eth0-rx-18145-21sh11:20:473
29805060,0irq/28-eth0-rx-0-21swapper/311:28:383
259960,0migration/223762-21kthreadcore09:10:442
59799955,0cyclictest17292-21diskmemload12:41:272
59799955,0cyclictest0-21swapper/212:49:202
59799950,0cyclictest0-21swapper/211:20:342
59789955,0cyclictest0-21swapper/110:05:021
59789950,0cyclictest0-21swapper/112:08:191
59779950,0cyclictest0-21swapper/011:20:540
59779950,0cyclictest0-21swapper/010:37:230
59779950,0cyclictest0-21swapper/009:00:440
35150,0ktimersoftd/30-21swapper/312:09:353
339950,0migration/37919-21munin-node10:55:483
339950,0migration/36118-21kthreadcore11:15:433
339950,0migration/35173-21munin-node08:55:463
339950,0migration/33794-21munin-node10:15:473
339950,0migration/332094-21fschecks_time08:10:413
339950,0migration/33049-21fschecks_time12:30:413
339950,0migration/328697-21fschecks_count12:45:423
339950,0migration/325727-21kthreadcore09:10:453
339950,0migration/323418-21diskmemload12:03:433
339950,0migration/32309-21taskset08:33:153
339950,0migration/32073-21taskset07:47:353
339950,0migration/318922-21kthreadcore08:45:453
339950,0migration/317065-21taskset09:27:523
339950,0migration/31375-21kthreadcore09:15:443
339950,0migration/312234-21ksmtuned10:03:293
329950,0watchdog/36895-21python12:10:503
329950,0watchdog/35794-21kthreadcore08:35:453
329950,0watchdog/322359-21grep11:05:463
329950,0watchdog/322121-21diskstats10:10:373
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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