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2025-11-17 - 22:40
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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 Nov 17, 2025 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2898623728,0sleep30-21swapper/306:17:173
2225823725,0sleep00-21swapper/006:15:220
2894623626,0sleep20-21swapper/206:16:482
2914522824,0sleep10-21swapper/106:19:071
329970,0watchdog/3299250irq/32-eth0-rx-09:43:423
329970,0watchdog/321760-21kthreadcore07:40:313
329970,0watchdog/31915-21cut06:45:273
329970,0watchdog/30-21swapper/309:15:303
29925070,0irq/32-eth0-rx-0-21swapper/310:23:183
29925070,0irq/32-eth0-rx-0-21swapper/307:10:303
8315060,0irq/26-0000:00:9490-21munin-run08:20:102
8315060,0irq/26-0000:00:1575-21sed07:30:112
339960,0migration/36171-21aten_r1power_fr08:55:253
339960,0migration/330793-21aten_r1power_en07:50:233
339960,0migration/314422-21sh10:35:463
329960,0watchdog/30-21swapper/311:27:023
329960,0watchdog/30-21swapper/311:21:503
329960,0watchdog/30-21swapper/311:20:023
329960,0watchdog/30-21swapper/311:05:183
329960,0watchdog/30-21swapper/310:45:383
329960,0watchdog/30-21swapper/310:42:143
329960,0watchdog/30-21swapper/310:30:183
329960,0watchdog/30-21swapper/310:28:263
329960,0watchdog/30-21swapper/310:05:223
329960,0watchdog/30-21swapper/310:01:103
329960,0watchdog/30-21swapper/309:57:263
329960,0watchdog/30-21swapper/309:47:063
329960,0watchdog/30-21swapper/309:38:263
329960,0watchdog/30-21swapper/309:33:503
329960,0watchdog/30-21swapper/309:21:143
329960,0watchdog/30-21swapper/309:14:503
329960,0watchdog/30-21swapper/308:27:353
329960,0watchdog/30-21swapper/308:06:593
329960,0watchdog/30-21swapper/308:00:113
329960,0watchdog/30-21swapper/306:30:313
29935060,0irq/33-eth0-tx-23871-21snmpd06:45:390
29935060,0irq/33-eth0-tx-20203-21munin-node08:05:290
29935060,0irq/33-eth0-tx-0-21swapper/008:18:150
29935060,0irq/33-eth0-tx-0-21swapper/007:33:070
29935060,0irq/33-eth0-tx-0-21swapper/007:23:050
29925060,0irq/32-eth0-rx-861-21cpu10:50:233
29925060,0irq/32-eth0-rx-3792-21df08:35:243
29925060,0irq/32-eth0-rx-12910-21grep08:40:253
29925060,0irq/32-eth0-rx-0-21swapper/311:36:433
29925060,0irq/32-eth0-rx-0-21swapper/311:10:293
29925060,0irq/32-eth0-rx-0-21swapper/310:15:563
29925060,0irq/32-eth0-rx-0-21swapper/310:11:403
29925060,0irq/32-eth0-rx-0-21swapper/309:25:593
29925060,0irq/32-eth0-rx-0-21swapper/309:00:153
29925060,0irq/32-eth0-rx-0-21swapper/308:24:183
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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