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2025-07-06 - 08:52
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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 Sun Jul 06, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3068525243,0sleep10-21swapper/118:24:261
3085823826,0sleep20-21swapper/218:26:272
2402423727,0sleep30-21swapper/318:23:323
3076423228,0sleep00-21swapper/018:25:210
329980,0watchdog/30-21swapper/322:18:413
329970,0watchdog/3299250irq/32-eth0-rx-18:58:423
329970,0watchdog/30-21swapper/323:45:373
29925070,0irq/32-eth0-rx-16812-21ssh22:55:593
29925070,0irq/32-eth0-rx-0-21swapper/320:44:583
29925070,0irq/32-eth0-rx-0-21swapper/320:41:343
29925070,0irq/32-eth0-rx-0-21swapper/318:53:433
339960,0migration/31949-21sh23:05:523
329960,0watchdog/36287-21munin-node23:28:373
329960,0watchdog/30-21swapper/323:50:173
329960,0watchdog/30-21swapper/323:38:373
329960,0watchdog/30-21swapper/323:25:373
329960,0watchdog/30-21swapper/323:20:373
329960,0watchdog/30-21swapper/322:59:293
329960,0watchdog/30-21swapper/322:50:333
329960,0watchdog/30-21swapper/322:40:413
329960,0watchdog/30-21swapper/322:26:413
329960,0watchdog/30-21swapper/322:09:253
329960,0watchdog/30-21swapper/322:02:373
329960,0watchdog/30-21swapper/321:45:533
329960,0watchdog/30-21swapper/321:03:373
329960,0watchdog/30-21swapper/320:33:493
329960,0watchdog/30-21swapper/320:20:453
329960,0watchdog/30-21swapper/320:06:343
329960,0watchdog/30-21swapper/319:18:223
329960,0watchdog/30-21swapper/319:08:343
310959960,0cyclictest0-21swapper/221:42:052
310959960,0cyclictest0-21swapper/221:03:362
310939960,0cyclictest0-21swapper/022:32:540
310939960,0cyclictest0-21swapper/020:41:350
29925060,0irq/32-eth0-rx-9800-21python23:08:453
29925060,0irq/32-eth0-rx-6459-21cut21:18:413
29925060,0irq/32-eth0-rx-32613-21ssh21:52:213
29925060,0irq/32-eth0-rx-30525-21cut20:53:403
29925060,0irq/32-eth0-rx-26642-21sh21:10:423
29925060,0irq/32-eth0-rx-22055-21sh18:43:393
29925060,0irq/32-eth0-rx-14417-21cut20:28:423
29925060,0irq/32-eth0-rx-0-21swapper/323:33:263
29925060,0irq/32-eth0-rx-0-21swapper/323:14:383
29925060,0irq/32-eth0-rx-0-21swapper/322:47:413
29925060,0irq/32-eth0-rx-0-21swapper/322:33:413
29925060,0irq/32-eth0-rx-0-21swapper/322:13:273
29925060,0irq/32-eth0-rx-0-21swapper/321:38:573
29925060,0irq/32-eth0-rx-0-21swapper/321:34:193
29925060,0irq/32-eth0-rx-0-21swapper/321:25:163
29925060,0irq/32-eth0-rx-0-21swapper/321:17:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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