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2026-09-02 - 09:30
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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 Sep 02, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2115025150,0sleep10-21swapper/119:28:441
2120823526,0sleep30-21swapper/319:29:223
2137523423,0sleep00-21swapper/019:31:190
2111122925,0sleep20-21swapper/219:28:132
21494991313,0cyclictest12012-21awk19:46:572
4160,0ktimersoftd/00-21swapper/022:29:170
339960,0migration/39671-21sh00:42:143
339960,0migration/31957-21sh21:49:523
339960,0migration/311879-21munin-node23:47:023
339960,0migration/311137-21sh23:28:373
329960,0watchdog/34072-21sed21:51:583
29805060,0irq/28-eth0-rx-5270-21sh23:45:523
29805060,0irq/28-eth0-rx-20458-21sed23:52:033
214879960,0cyclictest0-21swapper/121:58:521
214879960,0cyclictest0-21swapper/120:52:011
149960,0migration/08649-21sh00:24:420
149960,0migration/030549-21kthreadcore00:57:020
149960,0migration/015965-21irqrtprio23:52:000
149960,0migration/014982-21sh22:36:080
8305050,0irq/26-0000:00:7984-21ssh00:22:452
4150,0ktimersoftd/00-21swapper/021:49:080
35150,0ktimersoftd/30-21swapper/322:09:443
339950,0migration/38981-21runrttasks21:36:393
339950,0migration/3826-21kthreadcore19:37:013
339950,0migration/37975-21taskset00:22:433
339950,0migration/331311-21kthreadcore00:57:023
339950,0migration/330725-21kthreadcore21:27:013
339950,0migration/330677-21aten_r1power_cu22:26:543
339950,0migration/323458-21kthreadcore00:52:023
339950,0migration/321681-21taskset21:00:373
339950,0migration/318903-21fschecks_time00:31:583
339950,0migration/318862-21munin-node23:32:073
339950,0migration/318229-21cpuspeed_turbos21:41:553
339950,0migration/312914-21irqrtprio00:47:003
339950,0migration/312599-21kthreadcore00:07:023
339950,0migration/31013-21fschecks_time22:46:583
329950,0watchdog/331732-21kthreadcore21:07:013
329950,0watchdog/328520-21taskset20:18:413
329950,0watchdog/326355-21kthreadcore22:22:023
329950,0watchdog/311644-21cut22:52:023
329950,0watchdog/30-21swapper/320:37:013
329950,0watchdog/30-21swapper/320:32:013
29815050,0irq/29-eth0-tx-9310-21munin-node21:37:082
29815050,0irq/29-eth0-tx-8815-21kthreadcore22:32:022
29815050,0irq/29-eth0-tx-7675-21munin-node00:07:032
29815050,0irq/29-eth0-tx-503-21ssh23:03:352
29815050,0irq/29-eth0-tx-3912-21munin-node23:26:552
29815050,0irq/29-eth0-tx-28885-21munin-node19:36:580
29815050,0irq/29-eth0-tx-28860-21munin-node23:57:022
29815050,0irq/29-eth0-tx-20334-21munin-node22:01:562
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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