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2026-06-21 - 18:59
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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 Sun Jun 21, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2458224839,0sleep10-21swapper/107:24:521
2441624435,0sleep20-21swapper/207:22:572
1774724130,0sleep30-21swapper/307:20:543
2447423228,0sleep00-21swapper/007:23:350
8305060,0irq/26-0000:00:24035-21munin-run09:55:462
339960,0migration/39531-21kthreadcore11:01:063
339960,0migration/36621-21sh10:59:193
339960,0migration/36320-21munin-node08:16:123
339960,0migration/330540-21munin-node11:11:073
339960,0migration/327724-21kthreadcore10:51:053
339960,0migration/315905-21munin-node09:11:023
339960,0migration/314000-21sh09:47:123
339960,0migration/311786-21sh09:29:353
339960,0migration/310880-21irqcore11:21:053
329960,0watchdog/310771-21seq10:24:063
29805060,0irq/28-eth0-rx-29288-21grep12:26:053
29805060,0irq/28-eth0-rx-24304-21python10:11:073
29805060,0irq/28-eth0-rx-0-21swapper/309:36:073
247339960,0cyclictest0-21swapper/110:34:221
247329966,0cyclictest3524-21snmpd07:42:430
247329966,0cyclictest0-21swapper/007:51:040
149960,0migration/08106-21sh12:32:410
149960,0migration/04097-21sh11:36:020
149960,0migration/012109-21kthreadcore12:36:040
149960,0migration/011512-21sh09:28:550
339950,0migration/38576-21if_eth1.212:16:033
339950,0migration/37145-21kthreadcore07:56:033
339950,0migration/332443-21cpuspeed_turbos07:31:003
339950,0migration/331738-21munin-node08:56:113
339950,0migration/330699-21kthreadcore07:51:043
339950,0migration/328774-21latency_hist11:50:473
339950,0migration/326982-21munin-node10:16:003
339950,0migration/325999-21kthreadcore09:16:063
339950,0migration/324553-21cpuspeed_turbos09:55:593
339950,0migration/323642-21taskset09:54:423
339950,0migration/321493-21aten_r1power_fr07:45:583
339950,0migration/321493-21aten_r1power_fr07:45:583
339950,0migration/319656-21kthreadcore08:26:043
339950,0migration/318229-21kthreadcore12:01:043
339950,0migration/315868-21kthreadcore08:01:033
339950,0migration/313829-21taskset07:38:593
339950,0migration/31261-21fschecks_time10:01:013
339950,0migration/312392-21kthreadcore09:06:043
339950,0migration/311474-21fschecks_count08:46:003
339950,0migration/310413-21taskset08:41:333
329950,0watchdog/33524-21snmpd12:36:383
329950,0watchdog/33025-21ssh11:35:583
329950,0watchdog/326410-21irqcore08:11:013
329950,0watchdog/322688-21ssh12:21:223
329950,0watchdog/318300-21unixbench_multi10:26:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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