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2026-05-27 - 06:23
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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 May 27, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2480828278,0sleep20-21swapper/219:19:392
2510125041,0sleep30-21swapper/319:23:043
2482223624,0sleep00-21swapper/019:19:490
2506122925,0sleep10-21swapper/119:22:341
252279999,0cyclictest0-21swapper/221:24:192
4160,0ktimersoftd/00-21swapper/021:53:210
35160,0ktimersoftd/30-21swapper/300:36:183
339960,0migration/325595-21kthreadcore22:48:583
339960,0migration/319505-21sh22:25:273
339960,0migration/318503-21kthreadcore22:43:593
339960,0migration/317591-21sh22:06:273
29815060,0irq/29-eth0-tx-22249-21munin-node20:29:020
29815060,0irq/29-eth0-tx-11558-21munin-node20:44:010
29805060,0irq/28-eth0-rx-4140-21ssh23:33:443
29805060,0irq/28-eth0-rx-24831-21chrt00:20:563
252269960,0cyclictest1177-21ssh23:12:331
252269960,0cyclictest0-21swapper/120:23:421
149960,0migration/0469-21idleruntime-cro20:58:410
149960,0migration/031650-21needreboot20:08:590
149960,0migration/030243-21kthreadcore00:44:010
149960,0migration/025016-21sh23:07:510
149960,0migration/012051-21gltestperf00:33:560
35150,0ktimersoftd/30-21swapper/321:43:493
339950,0migration/39826-21kthreadcore22:39:013
339950,0migration/39595-21taskset23:16:393
339950,0migration/38612-21kthreadcore21:24:003
339950,0migration/38052-21cpuspeed_turbos20:18:543
339950,0migration/3496-21latency_hist20:58:413
339950,0migration/330298-21kthreadcore21:53:593
339950,0migration/328538-21sh22:13:593
339950,0migration/328538-21sh22:13:593
339950,0migration/328265-21kthreadcore00:04:003
339950,0migration/328039-21latency21:34:013
339950,0migration/325722-21aten_r1power_en20:08:513
339950,0migration/323820-21kthreadcore23:43:593
339950,0migration/323110-21fschecks_count21:13:563
339950,0migration/321069-21taskset20:24:023
339950,0migration/320960-21kthreadcore20:03:593
339950,0migration/318605-21kthreadcore23:58:593
339950,0migration/314849-21munin-node21:28:593
339950,0migration/314087-21sh23:56:273
339950,0migration/31349-21kthreadcore00:44:023
339950,0migration/311544-21munin-node23:18:563
339950,0migration/311315-21taskset20:43:393
339950,0migration/310118-21kthreadcore19:33:593
329950,0watchdog/35183-21if_eth019:53:563
329950,0watchdog/323088-21grep21:49:093
329950,0watchdog/317425-21processes19:59:003
329950,0watchdog/317010-21ssh00:18:133
329950,0watchdog/316108-21tr20:44:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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