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2026-08-04 - 11:04
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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 Tue Aug 04, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
946924130,0sleep00-21swapper/019:24:590
968223828,0sleep30-21swapper/319:27:303
977222826,0sleep20-21swapper/219:28:332
956722723,0sleep10-21swapper/119:26:081
99119977,0cyclictest9657-21kworker/0:022:18:570
99209960,0cyclictest0-21swapper/223:59:402
8305060,0irq/26-0000:00:31496-21munin-run19:44:193
339960,0migration/34558-21munin-node00:09:333
339960,0migration/33062-21sh00:06:343
339960,0migration/330211-21sh00:40:343
339960,0migration/329415-21sh21:33:423
339960,0migration/328740-21sh22:48:303
339960,0migration/324584-21sh23:40:113
339960,0migration/321563-21sh00:35:113
339960,0migration/317402-21sh23:39:023
339960,0migration/312457-21runrttasks22:55:173
329960,0watchdog/331593-21diskstats23:09:353
29815060,0irq/29-eth0-tx-0-21swapper/221:52:172
29805060,0irq/28-eth0-rx-23648-21grep22:24:413
29805060,0irq/28-eth0-rx-15131-21ssh23:17:453
29805060,0irq/28-eth0-rx-12360-21memory21:39:403
149960,0migration/024202-21idleruntime-cro23:24:210
99209955,0cyclictest0-21swapper/223:31:362
99209955,0cyclictest0-21swapper/222:36:162
99209955,0cyclictest0-21swapper/222:18:082
99209955,0cyclictest0-21swapper/200:27:252
99209950,0cyclictest0-21swapper/223:50:032
99209950,0cyclictest0-21swapper/223:23:152
99209950,0cyclictest0-21swapper/200:16:422
99209950,0cyclictest0-21swapper/200:07:142
99129955,0cyclictest0-21swapper/123:17:421
99129955,0cyclictest0-21swapper/123:02:431
99129955,0cyclictest0-21swapper/100:46:271
99129955,0cyclictest0-21swapper/100:38:161
99129950,0cyclictest0-21swapper/122:53:341
99129950,0cyclictest0-21swapper/122:18:061
99119955,0cyclictest9657-21kworker/0:022:43:550
99119955,0cyclictest9657-21kworker/0:022:34:590
99119955,0cyclictest9657-21kworker/0:022:05:570
99119955,0cyclictest27148-21kworker/0:223:59:300
99119955,0cyclictest27148-21kworker/0:223:55:000
99119955,0cyclictest27148-21kworker/0:223:53:060
99119955,0cyclictest27148-21kworker/0:223:41:280
99119955,0cyclictest27148-21kworker/0:223:30:030
99119955,0cyclictest27148-21kworker/0:223:15:310
99119955,0cyclictest27148-21kworker/0:223:14:030
99119955,0cyclictest27148-21kworker/0:223:04:310
99119955,0cyclictest27148-21kworker/0:223:03:150
99119955,0cyclictest27148-21kworker/0:222:54:470
99119955,0cyclictest27148-21kworker/0:222:51:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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