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2026-09-11 - 12:02
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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 Fri Sep 11, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3068424341,0sleep20-21swapper/219:29:352
3080223728,0sleep10-21swapper/119:30:581
3067722824,0sleep00-21swapper/019:29:290
3061622723,0sleep30-21swapper/319:28:473
8305060,0irq/26-0000:00:13429-21awk21:12:273
339960,0migration/36665-21sh22:24:293
339960,0migration/35154-21sh22:05:233
339960,0migration/331985-21fschecks_time20:17:393
339960,0migration/330113-21munin-node20:12:463
339960,0migration/330043-21kthreadcore21:42:473
339960,0migration/329353-21sh23:34:423
339960,0migration/319575-21sh23:11:273
339960,0migration/315296-21aten_r1power_cu23:47:383
329960,0watchdog/39014-21ssh22:45:583
329960,0watchdog/332151-21kthreadcore23:37:423
310019966,0cyclictest0-21swapper/200:07:102
310019960,0cyclictest0-21swapper/200:22:562
309999963,0cyclictest6200-21munin-run21:07:270
29815060,0irq/29-eth0-tx-20488-21munin-node19:47:500
29805060,0irq/28-eth0-rx-19608-21ntp_states23:27:493
29805060,0irq/28-eth0-rx-1307-21ssh00:16:573
179960,0migration/110786-21sh00:38:511
149960,0migration/06167-21pmu-power23:57:490
339950,0migration/36710-21kthreadcore20:42:443
339950,0migration/35184-21kthreadcore23:02:453
339950,0migration/3490-21kthreadcore19:32:443
339950,0migration/332379-21fschecks_time21:02:403
339950,0migration/331004-21kthreadcore00:32:483
339950,0migration/330260-21needreboot20:57:463
339950,0migration/329495-21diskmemload22:17:483
339950,0migration/327009-21aten_r1power_vo22:57:403
339950,0migration/325146-21diskmemload22:53:143
339950,0migration/324319-21fschecks_count23:52:443
339950,0migration/324018-21kthreadcore23:12:503
339950,0migration/319527-21munin-node00:27:413
339950,0migration/319527-21munin-node00:27:413
339950,0migration/318159-21munin-node20:07:423
339950,0migration/31785-21unixbench_singl19:52:523
339950,0migration/317798-21kthreadcore20:27:463
339950,0migration/31702-21munin-node21:22:473
339950,0migration/316398-21missed_timers00:22:483
339950,0migration/316354-21kthreadcore19:42:433
339950,0migration/315593-21munin-node20:02:453
339950,0migration/312999-21kthreadcore20:47:443
339950,0migration/312137-21sh23:24:213
339950,0migration/311908-21sh00:42:093
329950,0watchdog/39736-21if_eth1.200:02:423
329950,0watchdog/329602-21perl23:17:423
329950,0watchdog/317639-21cut21:12:463
329950,0watchdog/311409-21irqcore21:32:423
310019955,0cyclictest20185-21ssh23:12:372
310019955,0cyclictest0-21swapper/223:24:082
310019955,0cyclictest0-21swapper/222:06:342
310019950,0cyclictest32329-21munin-node23:57:412
310019950,0cyclictest0-21swapper/223:49:122
309999955,0cyclictest0-21swapper/020:02:400
29815050,0irq/29-eth0-tx-7184-21cut00:37:452
29815050,0irq/29-eth0-tx-5478-21ssh23:39:322
29815050,0irq/29-eth0-tx-28042-21munin-node21:22:410
29815050,0irq/29-eth0-tx-27903-21kthreadcore23:52:482
29815050,0irq/29-eth0-tx-18926-21ps21:52:492
29815050,0irq/29-eth0-tx-0-21swapper/020:17:290
29805050,0irq/28-eth0-rx-8159-21rt-features00:17:513
29805050,0irq/28-eth0-rx-31304-21taskset22:37:473
29805050,0irq/28-eth0-rx-12834-21aten_r1power_po21:52:393
29805050,0irq/28-eth0-rx-0-21swapper/323:42:453
29805050,0irq/28-eth0-rx-0-21swapper/322:30:243
29805050,0irq/28-eth0-rx-0-21swapper/322:14:213
29805050,0irq/28-eth0-rx-0-21swapper/321:47:443
29805050,0irq/28-eth0-rx-0-21swapper/300:57:323
29805050,0irq/28-eth0-rx-0-21swapper/300:52:443
29805050,0irq/28-eth0-rx-0-21swapper/300:47:453
29805050,0irq/28-eth0-rx-0-21swapper/300:45:233
29805050,0irq/28-eth0-rx-0-21swapper/300:07:483
27150,0ktimersoftd/20-21swapper/201:00:372
259950,0migration/24624-21kthreadcore20:17:442
259950,0migration/222454-21sh22:16:072
249950,0watchdog/212450-21perl23:07:422
179950,0migration/17989-21kthreadcore20:22:441
179950,0migration/127326-21taskset20:33:591
179950,0migration/123971-21latency_hist20:12:261
179950,0migration/121547-21processes23:47:481
179950,0migration/119976-21kthreadcore22:32:451
179950,0migration/115665-21kthreadcore19:42:431
179950,0migration/112658-21munin-node19:37:531
179950,0migration/110329-21kthreadcore00:02:441
169950,0watchdog/13525-21kthreadcore00:17:461
169950,0watchdog/132153-21tail23:37:421
169950,0watchdog/131463-21kthreadcore22:57:461
149950,0migration/09469-21taskset22:47:190
149950,0migration/09252-21switchtime21:27:520
149950,0migration/09050-21kthreadcore23:42:440
149950,0migration/06897-21irqcore00:57:450
149950,0migration/03993-21sh23:20:420
149950,0migration/03294-21irqrtprio00:17:460
149950,0migration/03291-21kthreadcore22:22:460
149950,0migration/03240-21fschecks_time19:57:400
149950,0migration/030781-21kthreadcore00:32:480
149950,0migration/029271-21sh23:34:270
149950,0migration/028209-21kthreadcore00:12:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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