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2025-05-02 - 12:48
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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 Fri May 02, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2534824028,0sleep30-21swapper/318:28:573
2535723728,0sleep20-21swapper/218:29:042
2539923524,0sleep00-21swapper/018:29:340
2551222925,0sleep10-21swapper/118:30:511
329980,0watchdog/317283-21sh21:52:383
329970,0watchdog/320282-21kthreadcore22:12:383
329970,0watchdog/30-21swapper/322:37:423
329970,0watchdog/30-21swapper/322:36:423
29925070,0irq/32-eth0-rx-0-21swapper/323:46:573
29925070,0irq/32-eth0-rx-0-21swapper/321:49:013
257059970,0cyclictest0-21swapper/222:19:452
257049977,0cyclictest2546-21nvme18:57:291
339960,0migration/38253-21sh23:38:073
339960,0migration/324410-21kthreadcore21:37:373
339960,0migration/322170-21idleruntime-cro18:52:183
339960,0migration/310992-21taskset22:44:323
339960,0migration/310738-21kthreadcore22:07:363
329960,0watchdog/30-21swapper/323:53:423
329960,0watchdog/30-21swapper/323:34:143
329960,0watchdog/30-21swapper/323:23:423
329960,0watchdog/30-21swapper/323:18:223
329960,0watchdog/30-21swapper/323:07:263
329960,0watchdog/30-21swapper/322:57:263
329960,0watchdog/30-21swapper/321:59:263
329960,0watchdog/30-21swapper/321:42:503
329960,0watchdog/30-21swapper/321:24:023
329960,0watchdog/30-21swapper/321:19:143
329960,0watchdog/30-21swapper/321:13:143
329960,0watchdog/30-21swapper/321:05:183
329960,0watchdog/30-21swapper/320:59:223
329960,0watchdog/30-21swapper/320:50:063
329960,0watchdog/30-21swapper/320:42:423
329960,0watchdog/30-21swapper/320:37:423
329960,0watchdog/30-21swapper/320:12:423
329960,0watchdog/30-21swapper/319:57:303
329960,0watchdog/30-21swapper/319:52:343
329960,0watchdog/30-21swapper/319:38:023
329960,0watchdog/30-21swapper/319:07:393
329960,0watchdog/30-21swapper/318:54:553
29935060,0irq/33-eth0-tx-19162-21munin-node19:57:410
29925060,0irq/32-eth0-rx-8053-40yum-updatesd-he21:07:443
29925060,0irq/32-eth0-rx-24245-21munin-node20:22:403
29925060,0irq/32-eth0-rx-22382-21turbostat.cron19:37:173
29925060,0irq/32-eth0-rx-21936-21hostname22:52:353
29925060,0irq/32-eth0-rx-18571-21open_inodes21:32:383
29925060,0irq/32-eth0-rx-15046-21tr22:27:383
29925060,0irq/32-eth0-rx-0-21swapper/323:30:023
29925060,0irq/32-eth0-rx-0-21swapper/323:12:343
29925060,0irq/32-eth0-rx-0-21swapper/323:02:353
29925060,0irq/32-eth0-rx-0-21swapper/322:51:303
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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