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2026-07-09 - 02:44
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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 50 highest latencies:
System rack1slot2.osadl.org (updated Thu Jul 09, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1962024836,0sleep10-21swapper/119:26:591
1946923726,0sleep00-21swapper/019:25:140
1926123626,0sleep30-21swapper/319:22:453
1961123425,0sleep20-21swapper/219:26:522
8305060,0irq/26-0000:00:27409-21if_eth1.322:57:282
339960,0migration/37597-21sh23:57:463
339960,0migration/37325-21sh00:56:313
339960,0migration/331925-21gltestperf20:42:253
339960,0migration/331532-21sh21:42:343
339960,0migration/328737-21latency00:47:313
339960,0migration/327540-21sh23:15:173
339960,0migration/326708-21sh21:59:553
339960,0migration/319845-21dump-pmu-power20:12:123
339960,0migration/318849-21sh00:23:253
29815060,0irq/29-eth0-tx-20070-21munin-node20:12:340
29805060,0irq/28-eth0-rx-4323-21kthreadcore23:37:303
29805060,0irq/28-eth0-rx-24264-21grep20:57:283
197219960,0cyclictest0-21swapper/100:30:181
197159960,0cyclictest0-21swapper/022:39:520
339950,0migration/39982-21kthreadcore22:27:313
339950,0migration/33728-21diskmemload22:06:503
339950,0migration/332090-21kthreadcore23:17:303
339950,0migration/331604-21kthreadcore20:17:333
339950,0migration/327550-21kthreadcore23:32:313
339950,0migration/326150-21kthreadcore23:52:293
339950,0migration/324026-21cpuspeed_turbos20:37:243
339950,0migration/32283-21munin-node20:22:243
339950,0migration/319884-21kthreadcore22:52:293
339950,0migration/319313-21kthreadcore19:47:303
339950,0migration/318949-21fschecks_time00:07:263
339950,0migration/316988-21munin-node20:32:243
339950,0migration/315705-21unixbench_singl19:42:363
339950,0migration/314683-21munin-node20:52:283
339950,0migration/313210-21needreboot23:42:303
339950,0migration/312940-21kthreadcore21:12:293
339950,0migration/311914-21fschecks_count23:07:263
329950,0watchdog/37001-21kthreadcore21:47:313
329950,0watchdog/34278-21if_err_eth1.200:17:283
329950,0watchdog/34229-21python22:22:353
329950,0watchdog/332036-21kthreadcore19:32:313
329950,0watchdog/327971-21ssh00:29:323
329950,0watchdog/324412-21df21:22:233
329950,0watchdog/319940-21kthreadcore00:42:323
329950,0watchdog/317916-21if_err_eth121:17:273
329950,0watchdog/315556-21df22:32:233
329950,0watchdog/315556-21df22:32:233
329950,0watchdog/31426-21sh00:13:203
329950,0watchdog/30-21swapper/322:21:193
329950,0watchdog/30-21swapper/321:38:033
329950,0watchdog/30-21swapper/320:47:273
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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