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2026-05-22 - 14:25
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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 Fri May 22, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2733125041,0sleep10-21swapper/107:21:581
2716724231,0sleep00-21swapper/007:20:040
2710423827,0sleep30-21swapper/307:19:233
2726523728,0sleep20-21swapper/207:21:152
339960,0migration/38198-21kthreadcore08:38:363
339960,0migration/328312-21sh12:38:483
339960,0migration/328312-21sh12:38:483
339960,0migration/324191-21irqcore10:28:363
329960,0watchdog/38280-21df10:38:313
329960,0watchdog/325670-21aten_r1power_cu12:03:313
29815060,0irq/29-eth0-tx-17257-21munin-node08:23:370
29815060,0irq/29-eth0-tx-13455-21vmstat09:23:450
29805060,0irq/28-eth0-rx-8762-21cut10:18:373
29805060,0irq/28-eth0-rx-3366-21cat11:28:393
29805060,0irq/28-eth0-rx-2349-21kthreadcore09:38:363
29805060,0irq/28-eth0-rx-21658-21perl08:48:343
275269966,0cyclictest6528-21diskmemload12:30:472
275269965,0cyclictest25953-21kthreadcore09:33:352
27160,0ktimersoftd/20-21swapper/210:23:342
149960,0migration/06492-21fschecks_count11:33:320
149960,0migration/032679-21sh10:50:470
149960,0migration/029794-21sh12:42:570
149960,0migration/029794-21sh12:42:570
149960,0migration/023387-21kthreadcore09:48:380
149960,0migration/022126-21sh11:40:410
149960,0migration/021606-21sh10:25:250
149960,0migration/013208-21kthreadcore11:53:400
4150,0ktimersoftd/00-21swapper/011:03:250
4150,0ktimersoftd/00-21swapper/009:39:100
35150,0ktimersoftd/30-21swapper/311:44:213
339950,0migration/35533-21kthreadcore09:58:373
339950,0migration/34190-21kthreadcore11:48:393
339950,0migration/332750-21fschecks_time09:18:333
339950,0migration/33095-21sh12:25:523
339950,0migration/330467-21cpuspeed_turbos12:43:323
339950,0migration/330367-21munin-node09:33:373
339950,0migration/327072-21kthreadcore09:13:373
339950,0migration/323308-21pmu-power08:23:413
339950,0migration/321065-21kthreadcore09:48:373
339950,0migration/320733-21taskset08:03:203
339950,0migration/318626-21unixbench_singl10:03:453
339950,0migration/31559-21aten_r1power_fr10:53:313
339950,0migration/314765-21idleruntime08:43:353
339950,0migration/312877-21latency_hist12:33:203
339950,0migration/312715-21kthreadcore07:33:363
339950,0migration/312621-21kthreadcore09:43:363
329950,0watchdog/314567-21idleruntime07:58:343
329950,0watchdog/312468-21munin-node11:18:393
329950,0watchdog/311623-21sh11:16:473
329950,0watchdog/310635-21kthreadcore11:53:393
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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