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2026-04-10 - 16:20
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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 Fri Apr 10, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1079525040,0sleep20-21swapper/207:17:502
1011824938,0sleep30-21swapper/307:15:153
401924334,0sleep10-21swapper/107:14:571
1072223127,0sleep00-21swapper/007:17:000
339960,0migration/328617-21kthreadcore12:10:073
339960,0migration/326365-21sh12:26:473
339960,0migration/320933-21kthreadcore09:35:103
29805060,0irq/28-eth0-rx-2948-21sh11:18:353
29805060,0irq/28-eth0-rx-20797-21sensors_fan10:30:133
29805060,0irq/28-eth0-rx-19912-21if_err_eth1.308:55:073
29805060,0irq/28-eth0-rx-14898-21crond08:29:513
149960,0migration/029251-21sh12:48:330
149960,0migration/025433-21kthreadcore10:15:080
149960,0migration/018802-21sh12:24:470
149960,0migration/010695-21kthreadcore12:00:080
110429965,0cyclictest3250-21irqbalance11:59:382
110419960,0cyclictest0-21swapper/112:37:341
110419960,0cyclictest0-21swapper/110:21:491
110409960,0cyclictest16253-21kthreadcore08:05:090
8305050,0irq/26-0000:00:3207-17auditd07:19:512
8305050,0irq/26-0000:00:12701-21diskstats10:10:042
339950,0migration/39459-21kthreadcore10:25:083
339950,0migration/39117-21kthreadcore12:35:123
339950,0migration/38622-21sh09:46:423
339950,0migration/3742-21kthreadcore11:35:123
339950,0migration/37144-21kthreadcore11:20:103
339950,0migration/332056-21unixbench-2d07:30:163
339950,0migration/329522-21aten_r1power_cu10:20:013
339950,0migration/329356-21kthreadcore08:15:083
339950,0migration/328463-21if_eth1.310:00:073
339950,0migration/327684-21latency_hist12:29:533
339950,0migration/326161-21sh11:12:003
339950,0migration/326034-21taskset08:59:543
339950,0migration/323877-21munin-node08:35:093
339950,0migration/321154-21latency_hist12:44:523
339950,0migration/317512-21munin-node08:05:123
339950,0migration/313835-21munin-node10:10:083
339950,0migration/313630-21kthreadcore07:20:073
339950,0migration/312106-21kthreadcore12:20:093
339950,0migration/31155-21munin-node09:05:043
339950,0migration/311524-21kthreadcore07:40:073
339950,0migration/310810-21timerandwakeup08:45:163
329950,0watchdog/39420-21if_eth1.312:00:073
329950,0watchdog/39032-21hwlatdetect10:45:073
329950,0watchdog/35602-21ssh09:25:223
329950,0watchdog/33328-21irqstats12:15:073
329950,0watchdog/329489-21kthreadcore09:40:113
329950,0watchdog/322859-21grep09:20:023
329950,0watchdog/318476-21munin-node11:25:113
329950,0watchdog/317509-21perl12:05:033
329950,0watchdog/317509-21perl12:05:033
329950,0watchdog/312864-21iostat08:50:063
29815050,0irq/29-eth0-tx-798-21munin-node09:05:110
29815050,0irq/29-eth0-tx-5552-21users09:25:172
29815050,0irq/29-eth0-tx-22340-21munin-node08:35:180
29815050,0irq/29-eth0-tx-20605-21tr09:35:102
29815050,0irq/29-eth0-tx-12454-21kthreadcore12:20:092
29815050,0irq/29-eth0-tx-12013-21pmu-power10:25:112
29815050,0irq/29-eth0-tx-0-21swapper/211:35:152
29815050,0irq/29-eth0-tx-0-21swapper/008:55:040
29815050,0irq/29-eth0-tx-0-21swapper/008:00:040
29805050,0irq/28-eth0-rx-7896-21python11:00:143
29805050,0irq/28-eth0-rx-6422-21missed_timers07:35:113
29805050,0irq/28-eth0-rx-4792-21cut11:55:103
29805050,0irq/28-eth0-rx-31950-21uptime10:55:173
29805050,0irq/28-eth0-rx-29586-21sensors11:50:133
29805050,0irq/28-eth0-rx-19692-21kthreadcore10:50:103
29805050,0irq/28-eth0-rx-10157-21aten_r1power_po09:50:023
29805050,0irq/28-eth0-rx-10051-21switchtime10:05:173
29805050,0irq/28-eth0-rx-0-21swapper/311:48:273
29805050,0irq/28-eth0-rx-0-21swapper/310:15:263
29805050,0irq/28-eth0-rx-0-21swapper/309:55:033
29805050,0irq/28-eth0-rx-0-21swapper/308:20:053
259950,0migration/28969-21idleruntime08:25:072
259950,0migration/25018-21kthreadcore11:00:092
259950,0migration/224794-21sh10:54:202
259950,0migration/22334-21irqrtprio09:05:082
249950,0watchdog/28824-21irqcore09:30:072
249950,0watchdog/222858-21cpuspeed_turbos09:20:022
249950,0watchdog/214015-21cat07:40:142
179950,0migration/1919-21missed_timers10:00:101
179950,0migration/18637-21taskset11:01:191
179950,0migration/14380-21kthreadcore11:55:101
179950,0migration/130340-21idleruntime07:55:051
179950,0migration/129595-21latency_hist11:34:521
179950,0migration/126860-21fschecks_time09:00:041
179950,0migration/124431-21kthreadcore10:15:081
179950,0migration/121810-21unixbench_multi09:15:161
169950,0watchdog/15976-21kthreadcore07:35:101
149950,0migration/09427-21irqrtprio08:25:090
149950,0migration/09263-21kthreadcore09:30:070
149950,0migration/06952-21kthreadcore08:45:090
149950,0migration/05854-21kthreadcore11:20:090
149950,0migration/04774-21kthreadcore11:00:090
149950,0migration/03352-21kernelversion12:15:070
149950,0migration/031731-21kthreadcore10:00:090
149950,0migration/023652-21sh09:36:360
149950,0migration/023253-21aten_r1power_cu11:50:020
149950,0migration/021889-21kthreadcore07:25:080
149950,0migration/021678-21taskset07:47:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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