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2026-08-05 - 11:25
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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 Wed Aug 05, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
476227067,0sleep20-21swapper/219:25:292
474526564,0sleep00-21swapper/019:25:150
3050024839,0sleep30-21swapper/319:24:303
499723127,0sleep10-21swapper/119:28:121
51699964,0cyclictest15512-21kworker/0:223:59:480
35160,0ktimersoftd/30-21swapper/322:53:233
339960,0migration/3943-21sh21:38:363
339960,0migration/324293-21munin-node00:04:403
339960,0migration/323905-21sh22:47:173
339960,0migration/323684-21sh21:31:103
339960,0migration/320458-21sh00:59:213
339960,0migration/320458-21sh00:59:213
29815060,0irq/29-eth0-tx-0-21swapper/222:04:452
29805060,0irq/28-eth0-rx-27498-21perl23:09:393
29805060,0irq/28-eth0-rx-0-21swapper/322:38:163
29805060,0irq/28-eth0-rx-0-21swapper/300:30:403
27160,0ktimersoftd/20-21swapper/223:58:112
19160,0ktimersoftd/10-21swapper/123:58:111
149960,0migration/019361-21sh22:04:570
149960,0migration/010061-21sh23:15:570
51719950,0cyclictest0-21swapper/200:16:052
51709954,0cyclictest22247-21awk22:09:391
51699955,0cyclictest0-21swapper/021:37:470
51699955,0cyclictest0-21swapper/000:51:140
51699955,0cyclictest0-21swapper/000:33:340
51699955,0cyclictest0-21swapper/000:10:140
51699950,0cyclictest0-21swapper/022:26:110
51699950,0cyclictest0-21swapper/021:54:580
51699950,0cyclictest0-21swapper/000:49:010
51699950,0cyclictest0-21swapper/000:40:110
51699950,0cyclictest0-21swapper/000:15:260
4150,0ktimersoftd/00-21swapper/021:46:460
339950,0migration/36937-21munin-node20:59:433
339950,0migration/36628-21kthreadcore21:59:443
339950,0migration/35017-21kthreadcore20:34:423
339950,0migration/33817-21kthreadcore22:54:443
339950,0migration/33724-21kthreadcore19:49:423
339950,0migration/330815-21df_abs23:49:373
339950,0migration/329477-21kthreadcore19:44:433
339950,0migration/329076-21kthreadcore20:29:433
339950,0migration/327833-21cpuspeed_turbos00:44:393
339950,0migration/326082-21taskset23:08:223
339950,0migration/323172-21kthreadcore23:24:453
339950,0migration/322889-21kthreadcore19:39:443
339950,0migration/322582-21fschecks_time23:44:373
339950,0migration/320196-21munin-node21:49:413
339950,0migration/319355-21kthreadcore00:19:433
339950,0migration/317105-21fschecks_count20:44:393
339950,0migration/315351-21latency21:24:453
339950,0migration/314725-21cpuspeed_turbos22:24:393
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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