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2026-09-17 - 01:41
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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 Sep 17, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
527125344,0sleep10-21swapper/119:32:291
516524839,0sleep20-21swapper/219:31:182
497424232,0sleep30-21swapper/319:29:033
510423127,0sleep00-21swapper/019:30:320
53809988,0cyclictest4130-21sensors22:18:181
29805070,0irq/28-eth0-rx-27679-21diskstats23:13:103
53799960,0cyclictest3189-21python23:33:230
4160,0ktimersoftd/00-21swapper/000:18:100
339960,0migration/36571-21munin-node23:38:143
339960,0migration/33321-21sh22:00:363
339960,0migration/326836-21sh23:12:343
339960,0migration/325500-21sh21:38:073
339960,0migration/318535-21latency_hist23:07:563
259960,0migration/21664-21kthreadcore22:18:142
8305050,0irq/26-0000:00:0-21swapper/319:42:563
53819955,0cyclictest0-21swapper/200:27:582
53819950,0cyclictest0-21swapper/223:11:202
53819950,0cyclictest0-21swapper/223:03:562
53819950,0cyclictest0-21swapper/220:03:152
53799955,0cyclictest0-21swapper/022:38:120
53799955,0cyclictest0-21swapper/022:37:250
53799955,0cyclictest0-21swapper/022:13:550
53799955,0cyclictest0-21swapper/022:06:310
53799950,0cyclictest9551-21idleruntime-cro21:27:570
53799950,0cyclictest0-21swapper/023:27:330
53799950,0cyclictest0-21swapper/000:33:080
339950,0migration/39182-21fschecks_time22:43:103
339950,0migration/39078-21taskset20:40:123
339950,0migration/37456-21irqrtprio21:03:123
339950,0migration/36752-21gltestperf20:18:093
339950,0migration/36296-21kthreadcore22:58:163
339950,0migration/3476-21kthreadcore21:18:163
339950,0migration/33750-21kthreadcore19:53:143
339950,0migration/3375-21kthreadcore20:33:143
339950,0migration/33569-21kthreadcore23:53:143
339950,0migration/329531-21kthreadcore00:28:183
339950,0migration/327128-21kthreadcore00:08:153
339950,0migration/325685-21kthreadcore22:13:143
339950,0migration/323485-21fschecks_time23:48:113
339950,0migration/323107-21kthreadcore20:28:133
339950,0migration/320739-21munin-node23:28:093
339950,0migration/319960-21cpuspeed_turbos00:43:103
339950,0migration/317400-21kthreadcore23:23:143
339950,0migration/315965-21timerwakeupswit20:43:223
339950,0migration/314219-21irqcore20:23:133
339950,0migration/310274-21kthreadcore23:58:153
329950,0watchdog/329208-21kthreadcore19:48:113
329950,0watchdog/323871-21ssh21:34:233
329950,0watchdog/313466-21diskstats22:08:083
29815050,0irq/29-eth0-tx-510-21ssh22:56:062
29815050,0irq/29-eth0-tx-28268-21munin-node00:48:102
29815050,0irq/29-eth0-tx-20659-21munin-node23:28:092
29815050,0irq/29-eth0-tx-12449-40yum-updatesd-he19:35:500
29815050,0irq/29-eth0-tx-0-21swapper/223:00:522
29815050,0irq/29-eth0-tx-0-21swapper/222:03:392
29815050,0irq/29-eth0-tx-0-21swapper/200:10:582
29815050,0irq/29-eth0-tx-0-21swapper/200:07:372
29805050,0irq/28-eth0-rx-8685-21grep00:53:173
29805050,0irq/28-eth0-rx-4643-21ssh22:18:453
29805050,0irq/28-eth0-rx-4455-21munin-node22:03:203
29805050,0irq/28-eth0-rx-2946-21ntp_states23:33:193
29805050,0irq/28-eth0-rx-17567-21fschecks_time22:48:113
29805050,0irq/28-eth0-rx-16599-21fschecks_time00:03:113
29805050,0irq/28-eth0-rx-15387-21irqcore23:43:123
29805050,0irq/28-eth0-rx-15029-21cut22:28:083
29805050,0irq/28-eth0-rx-14563-21kthreadcore00:38:143
29805050,0irq/28-eth0-rx-12705-21python22:23:183
29805050,0irq/28-eth0-rx-0-21swapper/322:40:273
29805050,0irq/28-eth0-rx-0-21swapper/321:55:293
29805050,0irq/28-eth0-rx-0-21swapper/321:43:143
29805050,0irq/28-eth0-rx-0-21swapper/319:38:093
29805050,0irq/28-eth0-rx-0-21swapper/300:49:073
29805050,0irq/28-eth0-rx-0-21swapper/300:33:153
29805050,0irq/28-eth0-rx-0-21swapper/300:13:583
27150,0ktimersoftd/20-21swapper/222:38:332
259950,0migration/27414-21aten_r1power_en23:58:092
259950,0migration/26241-21kthreadcore00:33:152
259950,0migration/220180-21kthreadcore00:23:152
259950,0migration/215869-21sh22:45:542
249950,0watchdog/219995-21ssh22:09:082
179950,0migration/18378-21munin-node21:23:151
179950,0migration/18156-21latency20:38:181
179950,0migration/18061-21latency_hist22:42:571
179950,0migration/14233-21kthreadcore22:58:151
179950,0migration/127142-21kthreadcore20:53:131
179950,0migration/126846-21taskset21:54:541
179950,0migration/119052-21latency21:08:161
179950,0migration/117596-21sh23:05:331
179950,0migration/114944-21kthreadcore20:23:131
169950,0watchdog/128560-21gltestperf21:18:111
149950,0migration/07867-21rt-features22:58:190
149950,0migration/07337-21sh23:58:020
149950,0migration/031297-21kthreadcore21:38:160
149950,0migration/027751-21sh21:57:220
149950,0migration/026212-21kthreadcore23:28:160
149950,0migration/022301-21sh22:30:200
149950,0migration/019128-21kthreadcore21:33:150
149950,0migration/01194-21ntp_offset21:18:180
149950,0migration/010781-21irqcore20:43:130
53819944,0cyclictest0-21swapper/223:17:582
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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