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2026-06-17 - 14:04
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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 50 highest latencies:
System rack1slot2.osadl.org (updated Wed Jun 17, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
594924233,0sleep20-21swapper/207:22:062
602123826,0sleep00-21swapper/007:22:560
598323525,0sleep10-21swapper/107:22:331
3164723329,0sleep30-21swapper/307:20:433
63109960,0cyclictest31846-21ssh12:24:362
63089966,0cyclictest3524-21snmpd09:02:090
63089963,0cyclictest31784-21munin-run08:50:270
339960,0migration/36319-21sh09:57:443
339960,0migration/329663-21sh12:04:543
339960,0migration/328843-21sh10:49:113
339960,0migration/321897-21sh12:16:063
29815060,0irq/29-eth0-tx-8179-21munin-node11:15:432
29805060,0irq/28-eth0-rx-31603-21sh12:23:563
29805060,0irq/28-eth0-rx-26563-21ssh11:42:413
29805060,0irq/28-eth0-rx-10258-21munin-run11:35:283
149960,0migration/05797-21munin-node11:10:480
149960,0migration/026499-21sh11:42:310
149960,0migration/024200-21sh12:35:590
149960,0migration/020698-21idleruntime-cro10:45:280
8305050,0irq/26-0000:00:16828-21taskset11:20:282
63109950,0cyclictest0-21swapper/212:51:342
63109950,0cyclictest0-21swapper/211:57:292
63109950,0cyclictest0-21swapper/210:08:242
63109950,0cyclictest0-21swapper/208:10:472
63089950,0cyclictest0-21swapper/010:49:520
63089950,0cyclictest0-21swapper/010:11:430
339950,0migration/39148-21diskmemload12:46:033
339950,0migration/35883-21taskset12:09:433
339950,0migration/35835-21diskmemload10:55:283
339950,0migration/34852-21kthreadcore07:45:453
339950,0migration/3402-21kthreadcore07:40:453
339950,0migration/33633-21kthreadcore08:50:443
339950,0migration/329183-21munin-node09:15:393
339950,0migration/324169-21taskset07:58:213
339950,0migration/323732-21fschecks_count11:05:403
339950,0migration/323455-21munin-node08:40:473
339950,0migration/313768-21runrttasks10:00:483
339950,0migration/313146-21diskmemload12:10:543
339950,0migration/311797-21fschecks_count09:25:403
339950,0migration/311760-21irqcore11:35:423
329950,0watchdog/33774-21ksmtuned12:41:513
329950,0watchdog/313360-21munin-node10:40:423
329950,0watchdog/312324-21latency07:25:463
329950,0watchdog/30-21swapper/310:35:383
329950,0watchdog/30-21swapper/308:20:423
29815050,0irq/29-eth0-tx-7621-21munin-node10:00:502
29815050,0irq/29-eth0-tx-32427-21munin-node12:25:492
29815050,0irq/29-eth0-tx-31655-21irqrtprio12:05:442
29815050,0irq/29-eth0-tx-22624-21munin-node09:50:542
29815050,0irq/29-eth0-tx-20955-21munin-node10:45:402
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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