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2026-09-04 - 02:22
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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 Sep 04, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2008523524,0sleep00-21swapper/019:29:560
1992923524,0sleep10-21swapper/119:28:081
2016823425,0sleep20-21swapper/219:30:542
1999123127,0sleep30-21swapper/319:28:503
29815070,0irq/29-eth0-tx-24652-21munin-node21:27:180
29815070,0irq/29-eth0-tx-20625-21munin-node20:17:060
203249976,0cyclictest16697-21unixbench_multi21:17:182
339960,0migration/33139-21sh22:10:463
339960,0migration/329473-21sh21:47:133
29815060,0irq/29-eth0-tx-2930-21munin-node21:12:170
29815060,0irq/29-eth0-tx-28110-21munin-node21:07:180
29805060,0irq/28-eth0-rx-8150-21munin-run00:26:533
29805060,0irq/28-eth0-rx-477-21sed22:47:103
29805060,0irq/28-eth0-rx-23989-21iostat22:42:103
203249965,0cyclictest23106-21kthreadcore19:32:092
203249960,0cyclictest0-21swapper/221:48:502
203249960,0cyclictest0-21swapper/200:42:062
149960,0migration/018484-21sh22:00:550
149960,0migration/017326-21kthreadcore22:37:110
8305050,0irq/26-0000:00:16793-21crond19:51:523
8305050,0irq/26-0000:00:13433-21dump-pmu-power20:56:523
35150,0ktimersoftd/30-21swapper/300:48:243
339950,0migration/39133-21kthreadcore22:32:143
339950,0migration/36468-21latency_hist00:06:533
339950,0migration/33279-21fschecks_time19:42:073
339950,0migration/331133-21kthreadcore21:07:103
339950,0migration/329769-21kthreadcore00:57:123
339950,0migration/327188-21taskset19:33:243
339950,0migration/326191-21taskset00:54:193
339950,0migration/321003-21kthreadcore23:17:103
339950,0migration/320610-21switchtime22:37:183
339950,0migration/318439-21munin-node21:22:093
339950,0migration/317096-21cpuspeed_turbos21:42:063
339950,0migration/31631-21kthreadcore21:32:113
339950,0migration/313085-21runrttasks20:10:343
339950,0migration/312792-21kthreadcore21:17:103
339950,0migration/310034-21aten_r1power_po20:32:033
329950,0watchdog/39028-21fschecks_count00:27:083
329950,0watchdog/331524-21sh23:02:403
329950,0watchdog/330205-21kthreadcore00:37:123
329950,0watchdog/32421-21munin-node23:42:163
329950,0watchdog/322789-21cut20:17:113
329950,0watchdog/31330-21needreboot20:22:113
329950,0watchdog/311321-21ssh23:31:563
329950,0watchdog/30-21swapper/321:52:153
29815050,0irq/29-eth0-tx-31352-21munin-node22:47:122
29815050,0irq/29-eth0-tx-31069-21kthreadcore22:27:132
29815050,0irq/29-eth0-tx-31069-21kthreadcore22:27:132
29815050,0irq/29-eth0-tx-27731-21munin-node19:37:160
29815050,0irq/29-eth0-tx-14233-21munin-node22:37:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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