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2026-04-20 - 06:16
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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 Mon Apr 20, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2628228479,0sleep10-21swapper/119:19:171
2628624328,0sleep00-21swapper/019:19:200
2631823728,0sleep30-21swapper/319:19:433
2632223425,0sleep20-21swapper/219:19:462
339960,0migration/320707-21sh22:22:443
329960,0watchdog/36874-21grep20:55:573
29815060,0irq/29-eth0-tx-5351-21munin-node19:50:510
29805060,0irq/28-eth0-rx-966-21kthreadcore00:40:593
29805060,0irq/28-eth0-rx-9290-21users00:26:063
29805060,0irq/28-eth0-rx-14413-21kthreadcore00:10:593
264709966,0cyclictest5513-21diskmemload00:41:182
149960,0migration/07719-21sh21:38:590
149960,0migration/05522-21sh22:15:520
149960,0migration/029350-21sh23:42:420
149960,0migration/021157-21sh21:45:570
149960,0migration/016969-21sh22:59:090
339950,0migration/35897-21kthreadcore00:05:583
339950,0migration/34015-21taskset23:29:123
339950,0migration/332298-21kthreadcore20:30:573
339950,0migration/330014-21taskset19:43:343
339950,0migration/327538-21munin-node20:50:523
339950,0migration/326872-21fschecks_count00:20:533
339950,0migration/32590-21taskset23:10:503
339950,0migration/321290-21kernelversion22:05:573
339950,0migration/317959-21irqrtprio21:05:573
339950,0migration/316277-21fschecks_time23:55:533
339950,0migration/316277-21fschecks_time23:55:533
339950,0migration/315690-21kthreadcore00:30:583
339950,0migration/315649-21sh21:41:363
339950,0migration/315380-21munin-node19:31:053
329950,0watchdog/36316-21perl20:35:533
329950,0watchdog/3402-21grep21:35:543
329950,0watchdog/329023-21ssh23:41:463
329950,0watchdog/327960-21ssh23:24:503
329950,0watchdog/325507-21cat20:25:573
329950,0watchdog/321489-21kthreadcore20:45:573
329950,0watchdog/3193472sleep319:58:453
329950,0watchdog/31932-21memory22:10:583
329950,0watchdog/316380-21kthreadcore20:40:573
329950,0watchdog/315889-21grep23:15:583
329950,0watchdog/30-21swapper/323:45:543
329950,0watchdog/30-21swapper/322:51:463
329950,0watchdog/30-21swapper/320:16:013
329950,0watchdog/30-21swapper/300:15:583
29815050,0irq/29-eth0-tx-9077-21kthreadcore23:50:582
29815050,0irq/29-eth0-tx-6038-21ssh22:33:362
29815050,0irq/29-eth0-tx-4902-21grep00:25:572
29815050,0irq/29-eth0-tx-26379-21munin-node23:05:522
29815050,0irq/29-eth0-tx-24153-21munin-node00:00:502
29815050,0irq/29-eth0-tx-1488-21munin-node19:25:530
29815050,0irq/29-eth0-tx-0-21swapper/223:56:022
29815050,0irq/29-eth0-tx-0-21swapper/223:56:022
29815050,0irq/29-eth0-tx-0-21swapper/223:47:102
29815050,0irq/29-eth0-tx-0-21swapper/222:47:372
29815050,0irq/29-eth0-tx-0-21swapper/221:52:222
29815050,0irq/29-eth0-tx-0-21swapper/200:34:152
29815050,0irq/29-eth0-tx-0-21swapper/200:21:432
29815050,0irq/29-eth0-tx-0-21swapper/021:21:020
29805050,0irq/28-eth0-rx-25735-21cat00:36:013
29805050,0irq/28-eth0-rx-16306-21fschecks_time22:40:543
29805050,0irq/28-eth0-rx-11593-21ssh23:31:153
29805050,0irq/28-eth0-rx-0-21swapper/323:35:503
29805050,0irq/28-eth0-rx-0-21swapper/323:09:383
29805050,0irq/28-eth0-rx-0-21swapper/323:00:583
29805050,0irq/28-eth0-rx-0-21swapper/322:56:003
29805050,0irq/28-eth0-rx-0-21swapper/322:40:203
29805050,0irq/28-eth0-rx-0-21swapper/322:17:023
29805050,0irq/28-eth0-rx-0-21swapper/322:00:573
29805050,0irq/28-eth0-rx-0-21swapper/321:58:553
29805050,0irq/28-eth0-rx-0-21swapper/321:51:433
29805050,0irq/28-eth0-rx-0-21swapper/321:30:533
29805050,0irq/28-eth0-rx-0-21swapper/321:28:353
29805050,0irq/28-eth0-rx-0-21swapper/319:25:503
29805050,0irq/28-eth0-rx-0-21swapper/300:00:473
264709955,0cyclictest22644-21sensors21:06:022
264709955,0cyclictest0-21swapper/200:48:142
264699955,0cyclictest21445-21sort00:36:001
264699955,0cyclictest0-21swapper/121:40:521
264689954,0cyclictest1588-21awk22:50:560
259950,0migration/28857-21kthreadcore19:50:562
259950,0migration/28087-21idleruntime22:35:542
259950,0migration/28039-21sh22:53:192
259950,0migration/27862-21kthreadcore22:15:562
259950,0migration/25896-21aten2.4-expect21:20:512
259950,0migration/23358-21sh23:27:262
259950,0migration/229551-21needreboot21:11:002
259950,0migration/222990-21sh22:42:542
259950,0migration/221365-21kthreadcore23:00:582
259950,0migration/221152-21irqcore00:35:592
259950,0migration/215103-21kthreadcore19:55:552
249950,0watchdog/232217-21kernelversion20:30:572
249950,0watchdog/214279-21kthreadcore21:00:572
179950,0migration/18911-21kthreadcore22:15:561
179950,0migration/130050-21kthreadcore20:05:581
179950,0migration/130047-21latency00:00:581
179950,0migration/127519-21kthreadcore21:10:591
179950,0migration/125579-21kthreadcore20:25:571
179950,0migration/124380-21unixbench_singl00:16:061
179950,0migration/122976-21gltestperf22:25:531
179950,0migration/120960-21sh22:23:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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