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2026-06-20 - 06:24
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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 Sat Jun 20, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
258723828,0sleep30-21swapper/319:23:293
268723627,0sleep10-21swapper/119:24:391
238223622,0sleep00-21swapper/019:21:140
259123525,0sleep20-21swapper/219:23:322
339960,0migration/36078-21sh21:37:043
339960,0migration/33573-21munin-node00:25:563
339960,0migration/32200-21unixbench-2d20:51:043
339960,0migration/320329-21sh23:37:043
29815060,0irq/29-eth0-tx-20780-21munin-node20:01:040
29815060,0irq/29-eth0-tx-10084-21munin-node20:15:560
29805060,0irq/28-eth0-rx-8658-21sensors_fan23:11:023
29805060,0irq/28-eth0-rx-6511-21port_sshpriv00:06:003
29805060,0irq/28-eth0-rx-11893-21taskset00:47:333
29805060,0irq/28-eth0-rx-1114-21if_eth122:50:543
28559965,0cyclictest16115-21sh22:57:562
28539960,0cyclictest0-21swapper/021:40:570
149960,0migration/08951-21sh21:57:040
149960,0migration/015423-21sh23:55:500
8305050,0irq/26-0000:00:6165-21munin-run22:35:402
8305050,0irq/26-0000:00:32087-21kthreadcore23:45:562
8305050,0irq/26-0000:00:31060-21latency_hist21:35:402
8305050,0irq/26-0000:00:19461-21crond00:35:402
339950,0migration/39004-21munin-node20:55:583
339950,0migration/38943-21taskset00:10:463
339950,0migration/35528-21kthreadcore21:55:573
339950,0migration/34648-21aten_r1power_cu23:30:493
339950,0migration/329976-21latency_hist22:30:403
339950,0migration/327176-21kthreadcore22:25:583
339950,0migration/326072-21munin-node00:36:023
339950,0migration/325251-21kthreadcore21:30:573
339950,0migration/324669-21latency_hist21:10:393
339950,0migration/324146-21latency_hist19:40:393
339950,0migration/323668-21munin-node00:15:593
339950,0migration/323044-21kthreadcore23:00:583
339950,0migration/321170-21munin-node22:40:593
339950,0migration/321091-21aten_r1power_po20:45:513
339950,0migration/320155-21hddtemp_smartct22:05:543
339950,0migration/320141-21kthreadcore20:20:573
339950,0migration/320122-21taskset22:22:503
339950,0migration/318116-21fschecks_count19:35:523
339950,0migration/31247-21kthreadcore19:45:563
339950,0migration/310448-21df_abs20:15:513
29815050,0irq/29-eth0-tx-5847-21iostat23:30:542
29815050,0irq/29-eth0-tx-4164-21munin-node22:15:522
29815050,0irq/29-eth0-tx-2861-21ssh22:13:012
29815050,0irq/29-eth0-tx-12303-21grep22:35:582
29815050,0irq/29-eth0-tx-0-21swapper/223:56:562
29815050,0irq/29-eth0-tx-0-21swapper/021:25:480
29815050,0irq/29-eth0-tx-0-21swapper/020:09:560
29805050,0irq/28-eth0-rx-4066-21latency23:45:583
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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