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2026-08-22 - 17:27
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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 Aug 22, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1194726160,0sleep00-21swapper/007:28:540
1195824940,0sleep10-21swapper/107:29:031
1187324637,0sleep20-21swapper/207:28:042
1175823127,0sleep30-21swapper/307:26:413
339960,0migration/330061-21munin-node09:31:133
339960,0migration/320866-21switchtime10:41:163
339960,0migration/317422-21sh11:19:223
29815060,0irq/29-eth0-tx-12818-21munin-node09:01:060
29805060,0irq/28-eth0-rx-17954-21python11:36:173
249960,0watchdog/28708-21grep10:16:102
149960,0migration/0638-21missed_timers09:11:100
149960,0migration/04403-21kthreadcore08:31:080
149960,0migration/031000-21sh09:33:200
149960,0migration/01190-21sh09:53:420
121869966,0cyclictest0-21swapper/209:57:412
121859966,0cyclictest23535-21diskmemload10:11:061
121859960,0cyclictest0-21swapper/112:11:041
8305050,0irq/26-0000:00:30294-21latency_hist12:05:512
339950,0migration/3995-21kthreadcore12:06:093
339950,0migration/3952-21munin-node08:26:183
339950,0migration/37756-21kthreadcore11:51:103
339950,0migration/326849-21latency_hist08:25:513
339950,0migration/326111-21aten_r1power_po09:51:043
339950,0migration/324251-21hddtemp_smartct08:01:063
339950,0migration/321010-21irqrtprio07:36:073
339950,0migration/320686-21kthreadcore08:41:083
339950,0migration/320029-21latency_hist11:40:513
339950,0migration/31990-21kthreadcore08:51:093
339950,0migration/319725-21fschecks_count12:56:063
339950,0migration/319124-21timerandwakeup10:21:173
339950,0migration/31793-21munin-node10:11:133
339950,0migration/316184-21latency_hist08:40:513
339950,0migration/316088-21kthreadcore07:31:073
339950,0migration/312932-21aten_r1power_po09:01:033
339950,0migration/312204-21kthreadcore09:21:083
329950,0watchdog/37412-21sendmail_mailst11:11:143
329950,0watchdog/33779-21cut12:46:113
329950,0watchdog/332323-21fschecks_time10:51:063
329950,0watchdog/330659-21kthreadcore07:41:103
329950,0watchdog/330275-21kernelversion11:46:103
329950,0watchdog/327099-21memory10:26:103
329950,0watchdog/325722-21perl11:06:063
329950,0watchdog/321295-21latency12:16:103
329950,0watchdog/310312-21ssh10:00:103
329950,0watchdog/30-21swapper/311:26:063
329950,0watchdog/30-21swapper/310:06:103
329950,0watchdog/30-21swapper/307:51:103
29815050,0irq/29-eth0-tx-31764-21ssh09:35:232
29815050,0irq/29-eth0-tx-22005-21munin-node12:01:112
29815050,0irq/29-eth0-tx-16329-21munin-node11:01:082
29815050,0irq/29-eth0-tx-15561-21ssh12:31:392
29815050,0irq/29-eth0-tx-0-21swapper/212:48:402
29815050,0irq/29-eth0-tx-0-21swapper/212:35:542
29815050,0irq/29-eth0-tx-0-21swapper/212:30:362
29815050,0irq/29-eth0-tx-0-21swapper/211:12:592
29815050,0irq/29-eth0-tx-0-21swapper/008:13:210
29805050,0irq/28-eth0-rx-9101-21strings11:31:093
29805050,0irq/28-eth0-rx-32748-21grep12:26:053
29805050,0irq/28-eth0-rx-24892-21gltestperf12:21:063
29805050,0irq/28-eth0-rx-17174-21date09:45:503
29805050,0irq/28-eth0-rx-16734-21kthreadcore11:56:093
29805050,0irq/28-eth0-rx-0-21swapper/312:33:433
29805050,0irq/28-eth0-rx-0-21swapper/312:11:003
29805050,0irq/28-eth0-rx-0-21swapper/310:56:503
29805050,0irq/28-eth0-rx-0-21swapper/310:50:253
29805050,0irq/28-eth0-rx-0-21swapper/310:36:043
29805050,0irq/28-eth0-rx-0-21swapper/310:31:563
29805050,0irq/28-eth0-rx-0-21swapper/310:16:583
29805050,0irq/28-eth0-rx-0-21swapper/310:00:583
29805050,0irq/28-eth0-rx-0-21swapper/309:50:103
29805050,0irq/28-eth0-rx-0-21swapper/309:36:003
29805050,0irq/28-eth0-rx-0-21swapper/308:55:513
259950,0migration/26552-21kthreadcore11:51:102
259950,0migration/23940-21gltestperf11:31:042
259950,0migration/231599-21fschecks_time08:51:052
259950,0migration/228996-21needreboot10:46:122
259950,0migration/226761-21idleruntime-cro08:25:512
259950,0migration/217224-21latency_hist09:45:512
259950,0migration/215366-21pmu-power09:21:112
259950,0migration/213471-21kthreadcore11:36:102
249950,0watchdog/231506-21grep11:06:182
249950,0watchdog/215217-21grep11:16:102
249950,0watchdog/20-21swapper/211:46:102
179950,0migration/1911-21timerandwakeup08:26:181
179950,0migration/17985-21switchtime07:46:151
179950,0migration/14269-21kthreadcore12:26:101
179950,0migration/13028-21fschecks_time09:56:031
179950,0migration/127053-21kthreadcore09:31:091
179950,0migration/123674-21kthreadcore10:26:091
179950,0migration/122364-21kthreadcore11:21:091
179950,0migration/114167-21fschecks_time11:56:051
179950,0migration/113477-21kthreadcore11:36:101
179950,0migration/110859-21kthreadcore09:41:081
169950,0watchdog/124494-21cut10:06:101
149950,0migration/07340-21kthreadcore09:16:100
149950,0migration/05249-21taskset08:54:460
149950,0migration/029333-21kthreadcore11:26:100
149950,0migration/028711-21munin-node12:01:170
149950,0migration/026096-21kthreadcore10:46:100
149950,0migration/024288-21idleruntime08:01:070
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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