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2026-04-29 - 16:44
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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 100 highest latencies:
System rack1slot2.osadl.org (updated Wed Apr 29, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2848224435,0sleep10-21swapper/107:17:151
2869023928,0sleep30-21swapper/307:19:373
2853923524,0sleep00-21swapper/007:17:540
2880023425,0sleep20-21swapper/207:20:562
289189993,0cyclictest12485-21awk09:41:420
289189993,0cyclictest10731-21awk11:51:410
289189983,0cyclictest3524-21snmpd07:25:580
289189983,0cyclictest30913-21sadc12:41:260
289189980,0cyclictest13542-21kthreadcore08:36:440
289189975,0cyclictest0-21swapper/011:34:210
289189973,0cyclictest3571-21lldpd09:09:150
289189973,0cyclictest19439-21awk07:36:420
289189972,0cyclictest12551-21awk08:16:420
289189971,0cyclictest0-21swapper/010:56:260
289189970,0cyclictest0-21swapper/012:08:060
289189970,0cyclictest0-21swapper/009:50:560
339960,0migration/37156-21munin-node11:46:483
339960,0migration/36016-21sh11:27:453
339960,0migration/332642-21sh11:45:043
339960,0migration/323523-21sh10:23:473
329960,0watchdog/31072-21sh09:34:013
29805060,0irq/28-eth0-rx-9359-21cut09:56:443
29805060,0irq/28-eth0-rx-8733-21iostat_ios10:16:433
29805060,0irq/28-eth0-rx-8513-21perl11:31:393
29805060,0irq/28-eth0-rx-6688-21iostat11:11:413
29805060,0irq/28-eth0-rx-18076-21ntp_states10:56:463
289199964,0cyclictest0-21swapper/110:06:441
289189962,0cyclictest6242-21kthreadcore09:36:440
289189962,0cyclictest32081-21grep07:41:480
289189962,0cyclictest23660-21awk10:06:430
289189962,0cyclictest1936-21awk09:16:410
289189960,0cyclictest0-21swapper/009:13:120
289189960,0cyclictest0-21swapper/008:53:080
289189960,0cyclictest0-21swapper/008:53:080
289189960,0cyclictest0-21swapper/007:26:490
259960,0migration/26254-21sh11:28:252
4150,0ktimersoftd/00-21swapper/011:02:020
4150,0ktimersoftd/00-21swapper/010:48:570
339950,0migration/39371-21runrttasks09:37:163
339950,0migration/37360-21kthreadcore07:26:443
339950,0migration/36211-21kthreadcore08:56:423
339950,0migration/332281-21if_eth010:11:413
339950,0migration/331276-21kthreadcore08:51:423
339950,0migration/331276-21kthreadcore08:51:423
339950,0migration/32912-21rt-features07:21:463
339950,0migration/328414-21pmu-power08:46:463
339950,0migration/328172-21kthreadcore09:11:433
339950,0migration/324072-21sh09:27:553
339950,0migration/322328-21kthreadcore10:41:443
339950,0migration/322229-21aten_r1power_po08:01:363
339950,0migration/320007-21kthreadcore11:36:443
339950,0migration/317800-21missed_timers12:11:453
339950,0migration/315126-21kthreadcore07:31:423
339950,0migration/314160-21sendmail_mailtr08:36:473
339950,0migration/313578-21kthreadcore09:01:423
329950,0watchdog/326943-21munin-node12:01:373
329950,0watchdog/321448-21cat12:16:413
329950,0watchdog/319975-21kthreadcore07:36:443
329950,0watchdog/31853-21cut08:06:443
329950,0watchdog/316086-21kthreadcore08:16:443
29815050,0irq/29-eth0-tx-7911-21diskmemload11:47:392
29815050,0irq/29-eth0-tx-7911-21diskmemload09:44:072
29815050,0irq/29-eth0-tx-533-21ssh10:46:442
29815050,0irq/29-eth0-tx-27091-21ssh09:47:112
29815050,0irq/29-eth0-tx-10465-21ssh10:53:022
29815050,0irq/29-eth0-tx-0-21swapper/212:21:512
29815050,0irq/29-eth0-tx-0-21swapper/212:19:242
29815050,0irq/29-eth0-tx-0-21swapper/212:14:372
29815050,0irq/29-eth0-tx-0-21swapper/211:06:442
29815050,0irq/29-eth0-tx-0-21swapper/211:05:012
29815050,0irq/29-eth0-tx-0-21swapper/210:32:022
29815050,0irq/29-eth0-tx-0-21swapper/209:53:122
29805050,0irq/28-eth0-rx-7961-21diskstats12:46:393
29805050,0irq/28-eth0-rx-5583-21cat12:06:443
29805050,0irq/28-eth0-rx-5407-21kthreadcore10:51:433
29805050,0irq/28-eth0-rx-31068-21python10:26:483
29805050,0irq/28-eth0-rx-30999-21grep11:06:433
29805050,0irq/28-eth0-rx-30032-21if_err_eth1.209:51:413
29805050,0irq/28-eth0-rx-22508-21cut08:21:433
29805050,0irq/28-eth0-rx-19464-21if_eth1.311:56:423
29805050,0irq/28-eth0-rx-16301-21cut11:16:433
29805050,0irq/28-eth0-rx-15180-21irqcore12:31:443
29805050,0irq/28-eth0-rx-0-21swapper/312:43:253
29805050,0irq/28-eth0-rx-0-21swapper/311:51:403
29805050,0irq/28-eth0-rx-0-21swapper/311:21:423
29805050,0irq/28-eth0-rx-0-21swapper/311:04:063
29805050,0irq/28-eth0-rx-0-21swapper/310:46:533
29805050,0irq/28-eth0-rx-0-21swapper/310:36:523
29805050,0irq/28-eth0-rx-0-21swapper/310:31:433
29805050,0irq/28-eth0-rx-0-21swapper/309:48:043
29805050,0irq/28-eth0-rx-0-21swapper/309:41:443
289239955,0cyclictest0-21swapper/212:26:432
289239954,0cyclictest0-21swapper/208:21:432
289239950,0cyclictest0-21swapper/212:01:482
289199950,0cyclictest0-21swapper/111:12:471
289189955,0cyclictest0-21swapper/012:46:430
289189955,0cyclictest0-21swapper/010:40:550
289189954,0cyclictest0-21swapper/011:18:540
289189953,0cyclictest0-21swapper/008:35:440
289189952,0cyclictest3571-21lldpd12:01:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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