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2026-09-08 - 04:58
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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 Sep 08, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1160223524,0sleep00-21swapper/019:29:570
1141023525,0sleep10-21swapper/119:27:421
1147423322,0sleep30-21swapper/319:28:283
1143623127,0sleep20-21swapper/219:28:032
29805080,0irq/28-eth0-rx-2489-21munin-run23:32:123
118679970,0cyclictest0-21swapper/200:53:032
339960,0migration/325874-21sh01:00:173
339960,0migration/320414-21sh22:26:343
339960,0migration/316896-21kthreadcore00:17:313
329960,0watchdog/36505-21sh00:28:203
329960,0watchdog/318054-21cut21:02:313
29815060,0irq/29-eth0-tx-0-21swapper/222:12:332
29805060,0irq/28-eth0-rx-23358-21ssh23:04:093
29805060,0irq/28-eth0-rx-20068-21hddtemp_smartct22:07:273
29805060,0irq/28-eth0-rx-20053-21cut00:37:313
29805060,0irq/28-eth0-rx-10663-21munin-node23:17:293
149960,0migration/07034-21sh22:56:260
149960,0migration/05835-21munin-node21:37:350
149960,0migration/011581-21sh22:20:420
149960,0migration/010223-21fschecks_time23:17:270
118679963,0cyclictest17987-21awk21:47:262
339950,0migration/37799-21proc_pri20:32:333
339950,0migration/36869-21kthreadcore00:47:323
339950,0migration/33283-21sh23:49:243
339950,0migration/331930-21munin-node21:37:243
339950,0migration/32939-21taskset22:15:393
339950,0migration/32852-21kernelversion19:47:293
339950,0migration/325080-21kthreadcore20:02:273
339950,0migration/324711-21irqcore00:22:303
339950,0migration/324703-21irqrtprio20:47:293
339950,0migration/322962-21taskset20:46:223
339950,0migration/322385-21sh22:46:523
339950,0migration/320689-21fschecks_time23:42:263
339950,0migration/32008-21kthreadcore00:07:313
339950,0migration/318067-21munin-node19:32:333
339950,0migration/315671-21kthreadcore23:37:313
339950,0migration/312874-21fschecks_count20:17:263
339950,0migration/31258-21kthreadcore22:52:303
339950,0migration/312189-21latency_hist20:17:123
339950,0migration/310673-21aten_r1power_vo22:02:253
339950,0migration/31023-21taskset19:47:113
329950,0watchdog/39820-21gltestperf20:37:273
329950,0watchdog/329137-21cut21:32:313
329950,0watchdog/324838-21sh21:50:513
329950,0watchdog/315666-21sh00:35:163
329950,0watchdog/312679-21sensors_temp00:12:403
29805050,0irq/28-eth0-rx-9912-21kthreadcore21:42:323
29805050,0irq/28-eth0-rx-5954-21cut23:32:343
29805050,0irq/28-eth0-rx-4158-21chrt22:33:313
29805050,0irq/28-eth0-rx-24341-21grep22:27:313
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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