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2026-03-18 - 06:01
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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 Wed Mar 18, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1613127372,0sleep10-21swapper/119:17:511
1582323625,0sleep00-21swapper/019:14:130
1587723526,0sleep20-21swapper/219:14:552
1597423425,0sleep30-21swapper/319:16:043
16203991414,0cyclictest2809-21sensors22:33:160
35160,0ktimersoftd/30-21swapper/323:46:443
339960,0migration/37077-21sh22:57:553
339960,0migration/34451-21munin-node19:28:133
339960,0migration/332040-21munin-node21:38:123
339960,0migration/331463-21sh00:23:393
339960,0migration/330338-21kthreadcore21:18:123
339960,0migration/319014-21sh23:40:013
339960,0migration/315288-21irqrtprio22:43:103
339960,0migration/314835-21gltestperf23:58:083
339960,0migration/313415-21sh23:57:233
329960,0watchdog/324540-21ssh23:07:583
329960,0watchdog/30-21swapper/300:44:343
29815060,0irq/29-eth0-tx-27665-21munin-node21:18:070
29815060,0irq/29-eth0-tx-23773-21munin-node20:08:110
29805060,0irq/28-eth0-rx-29624-21ntp_offset19:23:143
29805060,0irq/28-eth0-rx-25366-21perl21:53:083
29805060,0irq/28-eth0-rx-21886-21grep22:08:143
149960,0migration/07310-21sh22:57:560
149960,0migration/06808-21sh00:11:560
149960,0migration/06808-21sh00:11:560
149960,0migration/0621-21taskset21:58:030
149960,0migration/032586-21sh00:26:480
149960,0migration/018609-21sh00:38:100
149960,0migration/018239-21aten2.4-expect23:23:070
149960,0migration/016785-21sh00:34:360
149960,0migration/014187-21kthreadcore22:03:120
149960,0migration/013972-21timerwakeupswit00:13:200
339950,0migration/38698-21munin-node00:13:123
339950,0migration/36134-21kthreadcore19:53:113
339950,0migration/35710-21taskset21:02:203
339950,0migration/33181-21kthreadcore00:28:133
339950,0migration/330831-21taskset20:57:403
339950,0migration/329500-21kthreadcore23:28:143
339950,0migration/327565-21gltestperf22:13:103
339950,0migration/327212-21kthreadcore00:03:123
339950,0migration/323823-21aten_r1power_en20:08:063
339950,0migration/321887-21latency23:03:123
339950,0migration/320495-21kthreadcore21:48:133
339950,0migration/318362-21kthreadcore20:48:103
339950,0migration/318203-21kthreadcore20:23:133
339950,0migration/318010-21kthreadcore00:18:123
339950,0migration/316487-21idleruntime-cro20:47:543
339950,0migration/315792-21kthreadcore21:08:133
339950,0migration/315080-21kthreadcore22:23:123
339950,0migration/311484-21ksmtuned22:03:113
339950,0migration/311222-21kthreadcore21:03:133
339950,0migration/310622-21idleruntime00:33:103
329950,0watchdog/326453-21munin-node22:28:143
329950,0watchdog/322133-21diskstats21:33:063
29815050,0irq/29-eth0-tx-29225-21ssh00:03:252
29815050,0irq/29-eth0-tx-26894-21munin-node00:43:112
29815050,0irq/29-eth0-tx-23895-21latency22:08:152
29815050,0irq/29-eth0-tx-20344-21munin-node23:43:222
29815050,0irq/29-eth0-tx-13146-21kthreadcore00:33:132
29815050,0irq/29-eth0-tx-0-21swapper/223:55:312
29815050,0irq/29-eth0-tx-0-21swapper/223:48:122
29815050,0irq/29-eth0-tx-0-21swapper/223:38:342
29815050,0irq/29-eth0-tx-0-21swapper/223:11:042
29815050,0irq/29-eth0-tx-0-21swapper/222:26:362
29815050,0irq/29-eth0-tx-0-21swapper/221:57:412
29815050,0irq/29-eth0-tx-0-21swapper/221:39:542
29815050,0irq/29-eth0-tx-0-21swapper/200:07:592
29815050,0irq/29-eth0-tx-0-21swapper/200:07:592
29815050,0irq/29-eth0-tx-0-21swapper/020:35:170
29815050,0irq/29-eth0-tx-0-21swapper/020:23:110
29815050,0irq/29-eth0-tx-0-21swapper/019:53:050
29805050,0irq/28-eth0-rx-27867-21diskstats20:33:083
29805050,0irq/28-eth0-rx-2738-21pmu-power23:48:153
29805050,0irq/28-eth0-rx-19156-21ssh23:23:103
29805050,0irq/28-eth0-rx-10490-21ssh23:35:193
29805050,0irq/28-eth0-rx-0-21swapper/323:18:123
29805050,0irq/28-eth0-rx-0-21swapper/323:15:253
29805050,0irq/28-eth0-rx-0-21swapper/322:58:103
29805050,0irq/28-eth0-rx-0-21swapper/322:39:373
29805050,0irq/28-eth0-rx-0-21swapper/322:20:433
29805050,0irq/28-eth0-rx-0-21swapper/321:59:123
29805050,0irq/28-eth0-rx-0-21swapper/321:42:563
29805050,0irq/28-eth0-rx-0-21swapper/321:28:113
29805050,0irq/28-eth0-rx-0-21swapper/320:38:123
29805050,0irq/28-eth0-rx-0-21swapper/300:41:483
259950,0migration/28983-21sh22:02:362
259950,0migration/226594-21latency_hist23:27:552
259950,0migration/220476-21unixbench_singl22:43:192
259950,0migration/214237-21df_abs23:58:072
249950,0watchdog/228243-21grep21:33:182
249950,0watchdog/227305-21ssh22:13:102
179950,0migration/12897-21kthreadcore00:28:131
179950,0migration/125909-21kthreadcore20:53:111
162059954,0cyclictest3524-21snmpd22:38:342
162059954,0cyclictest3524-21snmpd00:25:052
162059950,0cyclictest0-21swapper/222:58:162
162059950,0cyclictest0-21swapper/221:50:002
162049955,0cyclictest0-21swapper/122:08:141
162049955,0cyclictest0-21swapper/119:53:071
162049954,0cyclictest3524-21snmpd20:23:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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