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2026-06-20 - 04:39
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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 100 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
29805050,0irq/28-eth0-rx-25775-21cat00:00:563
29805050,0irq/28-eth0-rx-24694-21cpu20:25:513
29805050,0irq/28-eth0-rx-21928-21ssh23:20:563
29805050,0irq/28-eth0-rx-21108-21kthreadcore23:55:583
29805050,0irq/28-eth0-rx-11160-21tune2fs22:00:523
29805050,0irq/28-eth0-rx-10619-21ls22:16:043
29805050,0irq/28-eth0-rx-0-21swapper/323:40:543
29805050,0irq/28-eth0-rx-0-21swapper/323:25:553
29805050,0irq/28-eth0-rx-0-21swapper/323:05:513
29805050,0irq/28-eth0-rx-0-21swapper/322:57:093
29805050,0irq/28-eth0-rx-0-21swapper/322:12:233
29805050,0irq/28-eth0-rx-0-21swapper/321:54:593
29805050,0irq/28-eth0-rx-0-21swapper/321:45:563
29805050,0irq/28-eth0-rx-0-21swapper/321:00:583
29805050,0irq/28-eth0-rx-0-21swapper/300:44:363
29805050,0irq/28-eth0-rx-0-21swapper/300:30:583
28559955,0cyclictest13786-21diskmemload21:36:252
28559955,0cyclictest0-21swapper/223:37:212
28559955,0cyclictest0-21swapper/222:22:462
28559955,0cyclictest0-21swapper/222:02:172
28559954,0cyclictest22097-21awk20:45:552
28539955,0cyclictest0-21swapper/019:57:410
28539953,0cyclictest20656-21kworker/0:123:36:590
28539953,0cyclictest20656-21kworker/0:123:26:030
28539953,0cyclictest20656-21kworker/0:100:51:450
28539953,0cyclictest20656-21kworker/0:100:46:450
28539953,0cyclictest20656-21kworker/0:100:41:410
28539953,0cyclictest11343-21kworker/0:021:47:450
28539950,0cyclictest0-21swapper/023:34:370
28539950,0cyclictest0-21swapper/023:12:050
28539950,0cyclictest0-21swapper/023:00:250
259950,0migration/231515-21latency_hist20:30:392
259950,0migration/228324-21kthreadcore00:00:572
259950,0migration/224546-21latency_hist21:10:392
259950,0migration/222934-21idleruntime23:40:552
259950,0migration/220527-21fschecks_time23:20:522
259950,0migration/21687-21latency_hist21:55:402
259950,0migration/216554-21latency_hist21:45:402
259950,0migration/213313-21idleruntime-cro19:55:392
259950,0migration/212651-21kthreadcore00:10:582
249950,0watchdog/215699-21grep21:00:582
179950,0migration/128716-21fschecks_time20:05:511
179950,0migration/124829-21kthreadcore20:45:571
179950,0migration/121236-21kthreadcore23:55:581
179950,0migration/112040-21kthreadcore20:15:561
149950,0migration/09160-21ntp_offset19:25:570
149950,0migration/08511-21kthreadcore21:20:590
149950,0migration/07459-21hwlatdetect22:35:540
149950,0migration/07209-21taskset21:39:410
149950,0migration/04914-21kthreadcore22:50:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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