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2026-05-12 - 08:07
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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 100 highest latencies:
System rack1slot2.osadl.org (updated Tue May 12, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1095325251,0sleep00-21swapper/019:21:210
1069023728,0sleep30-21swapper/319:18:193
1087923324,0sleep20-21swapper/219:20:312
1091423026,0sleep10-21swapper/119:20:541
339960,0migration/33257-21sh23:02:453
339960,0migration/326099-21sh21:58:023
339960,0migration/316350-21sh00:04:363
29805060,0irq/28-eth0-rx-17833-21hddtemp_smartct21:37:423
29805060,0irq/28-eth0-rx-16290-21kthreadcore23:27:453
27160,0ktimersoftd/20-21swapper/222:24:352
27160,0ktimersoftd/20-21swapper/200:17:282
179960,0migration/130190-21ntp_offset23:52:481
149960,0migration/013611-21sh22:29:020
149960,0migration/013048-21latency_hist23:27:270
111169960,0cyclictest18467-21kthreadcore20:32:450
111169960,0cyclictest0-21swapper/023:12:470
8305050,0irq/26-0000:00:13929-21kthreadcore00:22:452
4150,0ktimersoftd/00-21swapper/020:57:300
339950,0migration/39921-21kthreadcore19:42:433
339950,0migration/332643-21taskset19:37:173
339950,0migration/330872-21kthreadcore20:17:453
339950,0migration/330558-21munin-node19:57:443
339950,0migration/327048-21idleruntime22:57:433
339950,0migration/327002-21kthreadcore00:47:463
339950,0migration/325628-21aten_r1power_fr21:42:393
339950,0migration/325469-21kthreadcore19:52:453
339950,0migration/324949-21kthreadcore22:17:463
339950,0migration/324610-21fschecks_count23:52:423
339950,0migration/32367-21timerandwakeup23:17:533
339950,0migration/323457-21kthreadcore23:12:473
339950,0migration/319801-21kthreadcore19:47:453
339950,0migration/318367-21taskset20:54:143
339950,0migration/317482-21taskset21:52:573
339950,0migration/316266-21kthreadcore00:42:473
339950,0migration/316187-21kthreadcore00:22:463
339950,0migration/315126-21latency_hist20:32:273
339950,0migration/31271-21munin-node22:42:443
339950,0migration/312612-21taskset00:40:363
339950,0migration/31024-21runrttasks19:37:413
329950,0watchdog/39605-21fschecks_time22:47:433
329950,0watchdog/33289-21kthreadcore23:37:473
329950,0watchdog/329611-21taskset23:35:513
329950,0watchdog/329510-21irqstats22:02:433
329950,0watchdog/327924-21cut20:37:463
329950,0watchdog/320474-21kthreadcore21:17:463
329950,0watchdog/314055-21pmu-power20:27:503
329950,0watchdog/312375-21kthreadcore21:32:463
329950,0watchdog/311457-21ssh23:23:153
329950,0watchdog/30-21swapper/323:42:473
329950,0watchdog/30-21swapper/300:14:273
29815050,0irq/29-eth0-tx-7742-21kthreadcore00:37:472
29815050,0irq/29-eth0-tx-29578-21munin-node20:42:390
29815050,0irq/29-eth0-tx-28366-21ssh22:18:102
29815050,0irq/29-eth0-tx-24537-21diskstats23:52:412
29815050,0irq/29-eth0-tx-15572-21ssh21:35:032
29815050,0irq/29-eth0-tx-14258-21tune2fs00:42:432
29815050,0irq/29-eth0-tx-0-21swapper/222:34:282
29815050,0irq/29-eth0-tx-0-21swapper/221:27:532
29815050,0irq/29-eth0-tx-0-21swapper/019:42:090
29805050,0irq/28-eth0-rx-5923-21tr22:07:453
29805050,0irq/28-eth0-rx-32509-21basename21:27:443
29805050,0irq/28-eth0-rx-30015-21cut00:32:463
29805050,0irq/28-eth0-rx-23768-21switchtime22:52:533
29805050,0irq/28-eth0-rx-2286-21df21:47:413
29805050,0irq/28-eth0-rx-19698-21tr00:07:463
29805050,0irq/28-eth0-rx-0-21swapper/323:07:463
29805050,0irq/28-eth0-rx-0-21swapper/322:37:483
29805050,0irq/28-eth0-rx-0-21swapper/322:33:223
29805050,0irq/28-eth0-rx-0-21swapper/322:30:033
29805050,0irq/28-eth0-rx-0-21swapper/300:27:463
29805050,0irq/28-eth0-rx-0-21swapper/300:17:403
259950,0migration/227525-21irqrtprio22:57:442
249950,0watchdog/224489-21cut20:57:462
249950,0watchdog/210849-21cut23:42:472
179950,0migration/128377-21kthreadcore00:12:461
179950,0migration/126328-21kthreadcore23:32:451
179950,0migration/125956-21munin-node23:12:511
179950,0migration/123320-21taskset22:37:001
179950,0migration/118507-21sh23:10:121
179950,0migration/118209-21fschecks_count00:07:421
179950,0migration/11461-21munin-node19:37:421
169950,0watchdog/123317-21ssh22:52:471
149950,0migration/09231-21kthreadcore20:47:460
149950,0migration/08805-21aten_r1power_cu22:47:390
149950,0migration/07932-21sh22:45:510
149950,0migration/07795-21taskset19:42:310
149950,0migration/07566-21kthreadcore20:02:460
149950,0migration/0653-21aten_r1power_cu20:22:390
149950,0migration/06202-21kthreadcore21:47:460
149950,0migration/0609-21kthreadcore23:17:460
149950,0migration/04902-21kthreadcore23:02:480
149950,0migration/032235-21kthreadcore19:57:450
149950,0migration/032064-21munin-node22:57:470
149950,0migration/031902-21kthreadcore22:02:440
149950,0migration/03158-21kthreadcore22:22:470
149950,0migration/031542-21munin-node23:37:440
149950,0migration/029777-21kthreadcore23:52:470
149950,0migration/027806-21kthreadcore21:02:460
149950,0migration/027722-21sh22:17:490
149950,0migration/027199-21kthreadcore21:42:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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