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2026-06-01 - 12:43
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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 Jun 01, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1734424743,0sleep10-21swapper/119:22:411
1719723626,0sleep30-21swapper/319:20:543
1726923228,0sleep00-21swapper/019:21:470
1718523127,0sleep20-21swapper/219:20:492
339960,0migration/37467-21sh21:47:203
339960,0migration/36089-21sh23:57:113
339960,0migration/320943-21sh00:46:223
339960,0migration/319156-21ntp_offset22:29:263
339960,0migration/316702-21sh23:07:323
339960,0migration/315131-21sh00:03:113
339960,0migration/31353-21sh21:04:243
329960,0watchdog/313543-21kthreadcore20:04:253
29815060,0irq/29-eth0-tx-3788-21munin-node20:44:310
29815060,0irq/29-eth0-tx-3559-21munin-node19:59:200
29815060,0irq/29-eth0-tx-32175-21munin-node19:34:240
29805060,0irq/28-eth0-rx-19527-21sh23:29:033
29805060,0irq/28-eth0-rx-17993-21cat20:29:243
149960,0migration/06536-21latency_hist22:44:060
149960,0migration/04170-21sh21:26:280
149960,0migration/018059-21aten_r1power_en20:09:160
8305050,0irq/26-0000:00:28563-21cat00:34:062
8305050,0irq/26-0000:00:232362sleep221:39:112
339950,0migration/38520-21munin-node21:09:213
339950,0migration/34599-21kthreadcore22:04:233
339950,0migration/33579-21aten_r1power_cu19:59:183
339950,0migration/332652-21fschecks_count19:34:203
339950,0migration/332066-21taskset20:18:073
339950,0migration/330349-21latency00:09:263
339950,0migration/329847-21diskmemload00:52:103
339950,0migration/328751-21taskset21:23:153
339950,0migration/325616-21cpuspeed_turbos20:59:193
339950,0migration/323884-21fschecks_count21:39:193
339950,0migration/323084-21munin-node23:49:223
339950,0migration/320159-21sh23:44:333
339950,0migration/318737-21munin-node23:09:223
339950,0migration/31844-21taskset23:18:133
339950,0migration/31572-21kthreadcore22:39:243
339950,0migration/314716-21munin-node21:14:173
339950,0migration/314336-21aten_r1power_en19:44:173
339950,0migration/312150-21taskset22:27:233
339950,0migration/311196-21aten_r1power_vo20:49:173
329950,0watchdog/33524-21snmpd19:50:573
329950,0watchdog/325720-21python22:14:333
329950,0watchdog/325406-21munin-node19:29:213
329950,0watchdog/316491-21perl00:04:223
329950,0watchdog/31344-21cut20:39:253
329950,0watchdog/310207-21kthreadcore19:39:253
329950,0watchdog/30-21swapper/300:36:023
29815050,0irq/29-eth0-tx-6839-21sshd21:04:400
29815050,0irq/29-eth0-tx-4468-21ssh21:27:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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