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2026-06-11 - 08:22
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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 Thu Jun 11, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1822723728,0sleep30-21swapper/319:21:073
1846223627,0sleep20-21swapper/219:23:512
1831923624,0sleep10-21swapper/119:22:131
1830822723,0sleep00-21swapper/019:22:040
339960,0migration/38016-21sh23:00:503
339960,0migration/325459-21sh23:11:193
339960,0migration/322367-21sh23:48:483
339960,0migration/321157-21munin-node22:15:093
339960,0migration/318211-21sh00:23:503
339960,0migration/312169-21aten2.4-expect20:50:053
29815060,0irq/29-eth0-tx-8132-21munin-node19:40:150
29805060,0irq/28-eth0-rx-28376-21kthreadcore21:40:123
29805060,0irq/28-eth0-rx-1292-21date00:14:553
29805060,0irq/28-eth0-rx-0-21swapper/322:39:583
186259966,0cyclictest0-21swapper/023:05:140
149960,0migration/09315-21taskset00:18:100
149960,0migration/06752-21pmu-power21:45:160
149960,0migration/025507-21unixbench_multi00:25:200
149960,0migration/023041-21sh22:50:420
149960,0migration/010451-21sh22:07:240
4150,0ktimersoftd/00-21swapper/000:32:060
339950,0migration/33202-21kthreadcore20:20:113
339950,0migration/330597-21taskset22:39:053
339950,0migration/324731-21kthreadcore23:50:133
339950,0migration/32240-21idleruntime21:05:103
339950,0migration/321637-21df_abs00:45:073
339950,0migration/320960-21taskset22:31:203
339950,0migration/318401-21munin-node23:25:173
339950,0migration/31775-21irqcore21:45:113
339950,0migration/314582-21kthreadcore00:40:113
339950,0migration/313383-21kthreadcore23:05:143
339950,0migration/31310-21diskmemload22:01:203
339950,0migration/311818-21latency_hist20:04:553
329950,0watchdog/328775-21ntpq20:35:143
329950,0watchdog/314148-21cut20:25:143
29815050,0irq/29-eth0-tx-9349-21munin-node21:50:162
29815050,0irq/29-eth0-tx-2502-21ssh23:18:292
29815050,0irq/29-eth0-tx-24099-21munin-node21:40:092
29815050,0irq/29-eth0-tx-22556-21munin-node19:50:110
29815050,0irq/29-eth0-tx-1036-21munin-node20:20:090
29815050,0irq/29-eth0-tx-0-21swapper/223:27:362
29815050,0irq/29-eth0-tx-0-21swapper/221:55:322
29815050,0irq/29-eth0-tx-0-21swapper/200:35:072
29815050,0irq/29-eth0-tx-0-21swapper/200:29:382
29815050,0irq/29-eth0-tx-0-21swapper/021:25:320
29815050,0irq/29-eth0-tx-0-21swapper/020:55:080
29815050,0irq/29-eth0-tx-0-21swapper/020:38:550
29805050,0irq/28-eth0-rx-8404-21cut22:45:083
29805050,0irq/28-eth0-rx-5666-21ssh23:40:003
29805050,0irq/28-eth0-rx-4027-21timerandwakeup00:50:213
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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