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2026-06-24 - 07:04
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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 24, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2720529085,0sleep10-21swapper/119:22:381
2717625141,0sleep30-21swapper/319:22:163
2743024130,0sleep00-21swapper/019:25:130
2715323626,0sleep20-21swapper/219:22:032
27562991111,0cyclictest3524-21snmpd23:55:480
339960,0migration/33156-21sh21:44:483
339960,0migration/331129-21irqcore23:56:153
339960,0migration/331014-21sh00:13:453
339960,0migration/328934-21sh23:54:293
339960,0migration/324642-21sh23:15:243
339960,0migration/324032-21sh00:27:023
339960,0migration/323892-21kthreadcore23:31:173
339960,0migration/320880-21kthreadcore19:41:183
339960,0migration/320232-21sh23:49:203
339960,0migration/316320-21sh00:24:373
339960,0migration/313715-21sh22:50:323
29815060,0irq/29-eth0-tx-24254-21munin-node19:46:140
29805060,0irq/28-eth0-rx-10400-21perl22:11:163
275719966,0cyclictest0-21swapper/223:26:182
275719960,0cyclictest0-21swapper/200:00:312
275639965,0cyclictest3250-21irqbalance23:10:361
275629960,0cyclictest0-21swapper/023:50:380
149960,0migration/04326-21sh22:43:310
149960,0migration/017079-21taskset21:32:320
149960,0migration/016632-21sh22:12:080
149960,0migration/01089-21sh00:34:160
339950,0migration/3739-21runrttasks00:33:273
339950,0migration/3641-21hddtemp_smartct00:16:153
339950,0migration/35900-21taskset19:53:063
339950,0migration/330908-21fschecks_time22:01:133
339950,0migration/32964-21kthreadcore21:01:173
339950,0migration/328710-21taskset21:57:533
339950,0migration/328162-21aten_r1power_po00:51:113
339950,0migration/327659-21kthreadcore22:56:173
339950,0migration/327612-21if_eth1.221:21:153
339950,0migration/325056-21fschecks_time19:46:123
339950,0migration/32264-21munin-node21:26:163
339950,0migration/322251-21taskset20:52:513
339950,0migration/316188-21sendmail_mailqu21:31:223
339950,0migration/310689-21sh23:41:473
339950,0migration/310489-21kthreadcore19:56:163
339950,0migration/310193-21sh23:26:063
329950,0watchdog/37725-21seq22:06:263
329950,0watchdog/3452-21kthreadcore23:36:183
329950,0watchdog/328285-21sh22:39:103
329950,0watchdog/312719-21tr20:46:183
329950,0watchdog/30-21swapper/322:51:063
329950,0watchdog/30-21swapper/321:51:183
29815050,0irq/29-eth0-tx-6018-21grep21:26:190
29815050,0irq/29-eth0-tx-5976-21diskstats22:46:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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