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2026-09-04 - 16:08
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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 Sep 04, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2653524634,0sleep20-21swapper/207:27:062
90924435,0sleep10-21swapper/107:30:181
64924030,0sleep30-21swapper/307:27:483
91423423,0sleep00-21swapper/007:30:210
11259976,0cyclictest28981-21perl12:12:120
339960,0migration/39247-21aten_r1power_po09:07:063
339960,0migration/38555-21sh11:40:213
339960,0migration/36088-21sh11:18:473
339960,0migration/35595-21sh11:01:593
339960,0migration/320031-21idleruntime10:32:143
339960,0migration/319346-21sh10:48:273
339960,0migration/316630-21sh10:11:153
339960,0migration/316324-21latency10:27:123
339960,0migration/315396-21sh12:58:173
329960,0watchdog/30-21swapper/311:24:543
29815060,0irq/29-eth0-tx-1538-21munin-node08:17:120
149960,0migration/029323-21sh12:30:170
149960,0migration/025597-21sh10:16:580
149960,0migration/014823-21sh11:24:090
11269960,0cyclictest0-21swapper/112:08:481
11269960,0cyclictest0-21swapper/110:08:021
11259960,0cyclictest0-21swapper/009:36:550
339950,0migration/36947-21kthreadcore11:57:153
339950,0migration/36256-21munin-node08:42:083
339950,0migration/35715-21taskset12:35:473
339950,0migration/34798-21kthreadcore08:17:093
339950,0migration/3435-21kthreadcore07:52:113
339950,0migration/33211-21taskset12:14:033
339950,0migration/331009-21gltestperf09:42:083
339950,0migration/330647-21runrttasks09:57:453
339950,0migration/327931-21gltestperf08:57:103
339950,0migration/326540-21taskset08:54:433
339950,0migration/325676-21missed_timers12:07:133
339950,0migration/323812-21fschecks_time07:47:083
339950,0migration/322192-21fschecks_count12:27:083
339950,0migration/321711-21missed_timers07:42:133
339950,0migration/321604-21kthreadcore08:27:133
339950,0migration/32108-21df_abs09:02:073
339950,0migration/319689-21taskset09:33:053
339950,0migration/317910-21kthreadcore09:12:133
339950,0migration/317879-21kthreadcore08:47:133
339950,0migration/315149-21munin-node11:07:093
339950,0migration/314802-21munin-node08:22:143
339950,0migration/31189-21kernelversion12:52:113
339950,0migration/311344-21aten_r1power_po12:02:083
339950,0migration/310645-21irqcore11:42:133
339950,0migration/31032-21munin-node10:02:103
329950,0watchdog/35665-21cut09:27:063
29815050,0irq/29-eth0-tx-8619-21seq10:22:312
29815050,0irq/29-eth0-tx-8608-21munin-node10:07:092
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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