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2026-07-01 - 22:29
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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 Wed Jul 01, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1428623827,0sleep20-21swapper/207:24:182
1440723425,0sleep10-21swapper/107:25:461
1437523329,0sleep00-21swapper/007:25:200
1410522622,0sleep30-21swapper/307:22:113
339960,0migration/36372-21sh12:06:453
339960,0migration/322355-21sh12:13:403
339960,0migration/317991-21sh10:20:383
339960,0migration/313911-21sh10:55:473
339960,0migration/310098-21sh11:31:293
29815060,0irq/29-eth0-tx-11499-21munin-node08:31:490
29805060,0irq/28-eth0-rx-25370-21df_abs10:06:483
29805060,0irq/28-eth0-rx-17000-21cut09:36:543
145549960,0cyclictest0-21swapper/210:36:562
145549960,0cyclictest0-21swapper/210:06:582
149960,0migration/04334-21cpuspeed_turbos07:41:490
149960,0migration/026768-21sh10:26:050
149960,0migration/022397-21sh11:00:220
149960,0migration/019640-21munin-node08:36:500
149960,0migration/014519-21timerandwakeup11:12:000
149960,0migration/013949-21sh12:09:230
8305050,0irq/26-0000:00:14852-21latency_hist08:11:352
8305050,0irq/26-0000:00:11436-21latency_hist09:16:352
339950,0migration/37714-21sh11:11:223
339950,0migration/33197-21needreboot10:46:563
339950,0migration/329724-21aten_r1power_po09:06:483
339950,0migration/329647-21fschecks_count07:36:483
339950,0migration/328682-21gltestperf11:41:483
339950,0migration/327836-21fschecks_count10:26:493
339950,0migration/327339-21kthreadcore07:56:533
339950,0migration/327307-21kthreadcore07:31:533
339950,0migration/325102-21kthreadcore11:01:533
339950,0migration/323903-21munin-node12:32:013
339950,0migration/323702-21taskset10:03:573
339950,0migration/323194-21kthreadcore09:21:533
339950,0migration/312065-21kthreadcore12:26:533
339950,0migration/311762-21aten_r1power_fr09:16:473
329950,0watchdog/39652-21sh09:33:343
329950,0watchdog/39539-21ssh10:16:183
329950,0watchdog/329173-21grep08:41:543
329950,0watchdog/324404-21kthreadcore09:41:543
329950,0watchdog/319557-21kthreadcore08:11:543
329950,0watchdog/315729-21iostat_ios10:56:503
329950,0watchdog/311260-21kthreadcore08:06:543
329950,0watchdog/30-21swapper/308:21:543
29815050,0irq/29-eth0-tx-8079-21munin-node11:11:482
29815050,0irq/29-eth0-tx-4284-21munin-node08:27:000
29815050,0irq/29-eth0-tx-31769-21munin-node11:07:022
29815050,0irq/29-eth0-tx-22194-21munin-node08:16:470
29815050,0irq/29-eth0-tx-19986-21perl11:36:482
29815050,0irq/29-eth0-tx-0-21swapper/212:49:412
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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