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2026-04-30 - 22:23
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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 100 highest latencies:
System rack1slot2.osadl.org (updated Thu Apr 30, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
271790,0ktimersoftd/220319-21perf07:21:202
2087123829,0sleep30-21swapper/307:20:323
2092423724,0sleep00-21swapper/007:21:090
2072623725,0sleep10-21swapper/107:18:501
210269999,0cyclictest13969-21sensors10:06:540
210279976,0cyclictest0-21swapper/112:01:511
339960,0migration/36767-21sh10:04:553
339960,0migration/34368-21sh09:44:513
339960,0migration/320960-21aten_r1power_vo10:51:423
339960,0migration/320653-21kthreadcore12:41:483
339960,0migration/313792-21sh11:05:223
339960,0migration/310925-21latency_hist09:31:303
29805060,0irq/28-eth0-rx-31948-21ps07:26:473
29805060,0irq/28-eth0-rx-18967-21sh11:46:413
29805060,0irq/28-eth0-rx-0-21swapper/310:37:393
149960,0migration/032043-21cpuspeed_turbos11:16:430
149960,0migration/021928-21sh12:22:510
149960,0migration/011571-21sh10:45:310
8305050,0irq/26-0000:00:17692-21sed07:41:312
4150,0ktimersoftd/00-21swapper/012:43:560
4150,0ktimersoftd/00-21swapper/012:39:520
339950,0migration/39182-21munin-node07:31:483
339950,0migration/38316-21munin-node10:06:453
339950,0migration/36862-21taskset08:41:233
339950,0migration/35706-21latency12:31:483
339950,0migration/35325-21kthreadcore10:21:503
339950,0migration/34240-21fschecks_time10:41:443
339950,0migration/330904-21kthreadcore08:11:483
339950,0migration/330904-21kthreadcore08:11:483
339950,0migration/327488-21kthreadcore10:17:033
339950,0migration/324003-21fschecks_count12:26:433
339950,0migration/322802-21timerwakeupswit10:11:573
339950,0migration/321447-21kthreadcore07:41:483
339950,0migration/318883-21munin-node09:16:433
339950,0migration/316395-21kthreadcore08:21:473
339950,0migration/314177-21munin-node09:51:433
339950,0migration/312451-21idleruntime09:11:463
339950,0migration/312100-21latency_hist10:46:313
339950,0migration/311763-21irqrtprio11:41:473
339950,0migration/311445-21kthreadcore12:16:493
339950,0migration/311011-21taskset11:57:403
329950,0watchdog/327917-21kthreadcore11:31:463
329950,0watchdog/326694-21sh09:37:063
329950,0watchdog/315707-21ssh12:38:223
329950,0watchdog/31396-21grep08:56:503
329950,0watchdog/30-21swapper/309:49:343
29815050,0irq/29-eth0-tx-7427-21kthreadcore09:26:482
29815050,0irq/29-eth0-tx-503-21ssh09:23:192
29815050,0irq/29-eth0-tx-30261-21ssh09:59:302
29815050,0irq/29-eth0-tx-0-21swapper/211:08:512
29815050,0irq/29-eth0-tx-0-21swapper/209:43:042
29815050,0irq/29-eth0-tx-0-21swapper/008:49:340
29815050,0irq/29-eth0-tx-0-21swapper/008:11:520
29815050,0irq/29-eth0-tx-0-21swapper/008:11:520
29805050,0irq/28-eth0-rx-9129-21kthreadcore09:06:463
29805050,0irq/28-eth0-rx-8827-21kthreadcore08:41:473
29805050,0irq/28-eth0-rx-3454-21smartctl10:56:553
29805050,0irq/28-eth0-rx-32519-21users09:21:553
29805050,0irq/28-eth0-rx-3205-21kernelversion11:36:483
29805050,0irq/28-eth0-rx-29340-21pmu-power11:11:533
29805050,0irq/28-eth0-rx-13819-21grep07:36:483
29805050,0irq/28-eth0-rx-0-21swapper/312:11:453
29805050,0irq/28-eth0-rx-0-21swapper/311:29:053
29805050,0irq/28-eth0-rx-0-21swapper/310:31:463
29805050,0irq/28-eth0-rx-0-21swapper/310:29:043
29805050,0irq/28-eth0-rx-0-21swapper/309:56:483
29805050,0irq/28-eth0-rx-0-21swapper/309:35:153
29805050,0irq/28-eth0-rx-0-21swapper/308:51:433
27150,0ktimersoftd/20-21swapper/212:43:562
27150,0ktimersoftd/20-21swapper/212:02:422
259950,0migration/230895-21kthreadcore11:31:472
259950,0migration/214496-21sh09:51:452
259950,0migration/213117-21gltestperf10:46:432
259950,0migration/211452-21sh11:58:522
259950,0migration/210407-21kthreadcore11:01:482
249950,0watchdog/227244-21kthreadcore11:11:502
249950,0watchdog/225431-21cut09:36:502
210289955,0cyclictest0-21swapper/212:46:412
210289955,0cyclictest0-21swapper/211:45:122
210289955,0cyclictest0-21swapper/209:46:392
210289950,0cyclictest0-21swapper/212:16:162
210289950,0cyclictest0-21swapper/211:51:112
210289950,0cyclictest0-21swapper/210:34:532
210279955,0cyclictest25656-21diskmemload10:03:551
210279955,0cyclictest0-21swapper/112:13:501
210279955,0cyclictest0-21swapper/111:35:591
210279955,0cyclictest0-21swapper/111:03:591
210279955,0cyclictest0-21swapper/109:57:561
210279955,0cyclictest0-21swapper/109:29:421
210279950,0cyclictest0-21swapper/110:47:261
210269955,0cyclictest0-21swapper/009:48:050
210269950,0cyclictest0-21swapper/011:53:350
210269950,0cyclictest0-21swapper/010:00:230
19150,0ktimersoftd/10-21swapper/112:43:561
19150,0ktimersoftd/10-21swapper/112:39:521
19150,0ktimersoftd/10-21swapper/112:27:141
19150,0ktimersoftd/10-21swapper/111:38:401
19150,0ktimersoftd/10-21swapper/110:40:201
179950,0migration/15917-21munin-node12:31:501
179950,0migration/13546-21aten_r1power_po08:16:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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