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2026-08-24 - 20:00
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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 Mon Aug 24, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
620125243,0sleep20-21swapper/207:30:242
603424635,0sleep00-21swapper/007:28:300
612123728,0sleep30-21swapper/307:29:293
591123425,0sleep10-21swapper/107:27:031
63329976,0cyclictest3250-21irqbalance10:11:072
63309965,0cyclictest0-21swapper/108:51:211
339960,0migration/35894-21sh11:51:583
339960,0migration/324185-21sh12:05:253
339960,0migration/319439-21sh12:40:563
29805060,0irq/28-eth0-rx-26100-21python12:41:233
29805060,0irq/28-eth0-rx-25493-21perl12:06:143
29805060,0irq/28-eth0-rx-16759-21cut11:41:193
29805060,0irq/28-eth0-rx-14674-21perl07:36:123
29805060,0irq/28-eth0-rx-0-21swapper/310:25:033
29805060,0irq/28-eth0-rx-0-21swapper/309:47:273
149960,0migration/04707-21munin-node10:16:240
149960,0migration/030726-21sh11:50:130
149960,0migration/027082-21kthreadcore08:51:190
149960,0migration/024588-21unixbench_multi12:21:280
149960,0migration/017155-21latency_hist10:46:010
149960,0migration/010506-21aten_r1power_cu08:41:110
63329954,0cyclictest3571-21lldpd11:24:042
63309955,0cyclictest0-21swapper/110:20:161
63309955,0cyclictest0-21swapper/109:32:201
63309950,0cyclictest0-21swapper/112:56:491
63309950,0cyclictest0-21swapper/111:29:001
63309950,0cyclictest0-21swapper/110:34:181
63299955,0cyclictest0-21swapper/012:49:560
63299954,0cyclictest8226-21tr10:21:190
339950,0migration/36758-21kthreadcore08:36:193
339950,0migration/36355-21irqcore10:01:183
339950,0migration/34500-21munin-node10:16:223
339950,0migration/32984-21taskset09:18:453
339950,0migration/329321-21gltestperf08:31:163
339950,0migration/328482-21kthreadcore12:26:203
339950,0migration/327722-21timerandwakeup09:11:283
339950,0migration/325827-21kthreadcore11:46:203
339950,0migration/325384-21munin-node11:06:233
339950,0migration/323066-21fschecks_time10:11:153
339950,0migration/322411-21irqcore08:26:183
339950,0migration/319890-21kthreadcore09:31:173
339950,0migration/319055-21kthreadcore10:26:193
339950,0migration/317961-21kthreadcore10:06:203
339950,0migration/315704-21munin-node12:16:243
339950,0migration/31225-21munin-node12:11:153
329950,0watchdog/36257-21kthreadcore12:31:203
329950,0watchdog/324778-21kthreadcore11:26:203
329950,0watchdog/322504-21tr08:46:203
329950,0watchdog/320485-21sed08:21:283
329950,0watchdog/313019-21munin-node09:01:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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