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2026-08-11 - 09:20
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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 Tue Aug 11, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1459524736,0sleep00-21swapper/019:29:020
1458723927,0sleep20-21swapper/219:28:562
1438723827,0sleep30-21swapper/319:26:363
1435423725,0sleep10-21swapper/119:26:101
339960,0migration/3923-21sh23:25:463
339960,0migration/39083-21sh23:30:173
339960,0migration/38823-21sh00:47:073
339960,0migration/35811-21gltestperf20:10:083
339960,0migration/35088-21kthreadcore21:15:113
339960,0migration/331605-21cpuspeed_turbos22:50:063
339960,0migration/330197-21sh22:47:323
339960,0migration/325523-21switchtime22:05:213
339960,0migration/315833-21munin-node00:15:083
29815060,0irq/29-eth0-tx-18235-21cat23:00:132
29815060,0irq/29-eth0-tx-15563-21munin-node19:55:170
29815060,0irq/29-eth0-tx-1492-21munin-node21:15:060
29805060,0irq/28-eth0-rx-7969-21uptime20:30:203
29805060,0irq/28-eth0-rx-24588-21ssh21:48:083
29805060,0irq/28-eth0-rx-13270-21perl22:20:093
29805060,0irq/28-eth0-rx-12551-21cut23:15:133
29805060,0irq/28-eth0-rx-11538-21sed20:55:203
29805060,0irq/28-eth0-rx-0-21swapper/300:05:143
147439960,0cyclictest0-21swapper/221:55:072
147439960,0cyclictest0-21swapper/200:05:112
147409960,0cyclictest0-21swapper/021:45:160
147409960,0cyclictest0-21swapper/000:13:180
149960,0migration/05534-21fschecks_count20:55:080
149960,0migration/03319-21pmu-power22:30:150
149960,0migration/018130-21kthreadcore20:40:120
149960,0migration/017476-21kthreadcore00:15:110
149960,0migration/016403-21sh21:44:250
149960,0migration/015621-21sh22:59:280
149960,0migration/013283-21kthreadcore22:00:120
8305050,0irq/26-0000:00:24521-21latency_hist23:04:552
339950,0migration/38763-21taskset21:55:223
339950,0migration/37710-21irqrtprio00:10:123
339950,0migration/34799-21latency_hist20:09:543
339950,0migration/326284-21kthreadcore22:25:133
339950,0migration/326158-21taskset21:06:163
339950,0migration/325200-21kthreadcore20:00:123
339950,0migration/325136-21kthreadcore00:00:133
339950,0migration/323215-21runrttasks23:01:403
339950,0migration/321259-21kthreadcore00:55:133
339950,0migration/319171-21kthreadcore00:35:143
339950,0migration/315887-21latency_hist21:24:543
339950,0migration/315278-21munin-node19:30:063
339950,0migration/315099-21taskset19:52:153
339950,0migration/31396-21kthreadcore21:35:153
339950,0migration/313002-21gltestperf20:15:083
339950,0migration/311226-21kthreadcore20:35:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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