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2026-07-20 - 19:40
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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 50 highest latencies:
System rack1slot2.osadl.org (updated Mon Jul 20, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2576623726,0sleep10-21swapper/107:27:101
2568423622,0sleep00-21swapper/007:26:130
2571623526,0sleep30-21swapper/307:26:323
2550823324,0sleep20-21swapper/207:24:102
2592199120,0cyclictest0-21swapper/009:30:150
8305060,0irq/26-0000:00:378-21vmstat08:13:353
339960,0migration/34113-21sh12:18:013
339960,0migration/329823-21sh11:14:243
339960,0migration/327134-21sh10:53:303
339960,0migration/323389-21sh09:56:493
339960,0migration/323389-21sh09:56:493
329960,0watchdog/321261-21cat10:33:243
29815060,0irq/29-eth0-tx-29835-21munin-node07:53:330
29815060,0irq/29-eth0-tx-17345-21if_eth1.311:28:262
29805060,0irq/28-eth0-rx-13754-21iostat_ios10:48:253
259239966,0cyclictest0-21swapper/211:18:242
259239965,0cyclictest30963-21irqrtprio10:58:262
259239960,0cyclictest0-21swapper/211:36:042
259219960,0cyclictest0-21swapper/011:48:240
149960,0migration/09648-21sh10:25:450
149960,0migration/017064-21sh10:12:540
8305050,0irq/26-0000:00:0-21swapper/308:58:233
339950,0migration/39582-21irqcore07:38:243
339950,0migration/33723-21kthreadcore10:03:273
339950,0migration/332615-21kthreadcore12:33:273
339950,0migration/3324-21kthreadcore08:38:263
339950,0migration/331754-21taskset11:34:393
339950,0migration/331693-21kthreadcore07:53:243
339950,0migration/33074-21latency10:58:283
339950,0migration/328071-21latency09:38:273
339950,0migration/327108-21kthreadcore12:28:283
339950,0migration/326971-21idleruntime10:18:243
339950,0migration/32640-21munin-node08:18:263
339950,0migration/325142-21idleruntime09:58:243
339950,0migration/323880-21munin-node10:13:343
339950,0migration/323555-21fschecks_time08:33:233
339950,0migration/32124-21kthreadcore09:23:273
339950,0migration/316227-21munin-node09:13:223
339950,0migration/315805-21kthreadcore09:33:283
339950,0migration/315132-21sh11:26:013
339950,0migration/314823-21kthreadcore08:03:263
339950,0migration/312140-21kthreadcore10:08:263
339950,0migration/311771-21kthreadcore09:08:263
339950,0migration/310856-21irqrtprio11:43:253
329950,0watchdog/39929-21kthreadcore08:43:273
329950,0watchdog/37122-21aten_r1power_fr09:48:193
329950,0watchdog/3264702sleep311:53:203
329950,0watchdog/319412-21munin-node12:23:323
329950,0watchdog/318365-21ssh11:48:243
329950,0watchdog/315278-21idleruntime11:08:243
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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