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2026-07-26 - 18:54
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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 Sun Jul 26, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1958224435,0sleep20-21swapper/207:28:122
1951824342,0sleep10-21swapper/107:27:271
1950323223,0sleep30-21swapper/307:27:173
1935322925,0sleep00-21swapper/007:25:340
339970,0migration/326835-21sh11:37:593
339970,0migration/320658-21munin-node08:58:503
8305060,0irq/26-0000:00:32110-21date11:03:382
8305060,0irq/26-0000:00:12753-21crond08:08:373
35160,0ktimersoftd/30-21swapper/312:40:523
35160,0ktimersoftd/30-21swapper/312:22:543
35160,0ktimersoftd/30-21swapper/310:24:213
339960,0migration/39537-21munin-node08:28:503
339960,0migration/36075-21sh09:30:563
339960,0migration/330705-21sh10:59:543
339960,0migration/330457-21sh12:34:053
339960,0migration/329043-21sh10:40:173
339960,0migration/328764-21timerandwakeup12:14:033
339960,0migration/327948-21sh10:22:253
339960,0migration/316649-21sh12:47:193
339960,0migration/31169-21kthreadcore10:44:013
29805060,0irq/28-eth0-rx-2342-21iostat_ios09:48:573
29805060,0irq/28-eth0-rx-21554-21kthreadcore12:48:563
196939960,0cyclictest0-21swapper/112:42:571
196929960,0cyclictest12555-21hwlatdetect10:13:530
149960,0migration/013330-21runrttasks10:49:050
8305050,0irq/26-0000:00:0-21swapper/308:23:373
339950,0migration/39100-21taskset09:10:383
339950,0migration/39091-21kthreadcore09:33:563
339950,0migration/3874-21kthreadcore07:58:563
339950,0migration/38531-21aten_r1power_cu11:08:503
339950,0migration/37138-21kthreadcore07:38:573
339950,0migration/330863-21munin-node09:44:003
339950,0migration/327156-21sh07:33:493
339950,0migration/327141-21munin-node10:03:513
339950,0migration/324258-21fschecks_count07:53:513
339950,0migration/320884-21sh12:10:103
339950,0migration/320579-21df_abs08:13:523
339950,0migration/32018-21munin-node11:23:513
339950,0migration/319147-21kthreadcore09:18:563
339950,0migration/314399-21runrttasks10:52:043
339950,0migration/312693-21taskset08:51:253
339950,0migration/312550-21fschecks_count11:48:523
339950,0migration/311507-21taskset10:13:433
329950,0watchdog/35175-21kthreadcore08:23:573
329950,0watchdog/330732-21kthreadcore11:18:573
329950,0watchdog/323680-21sh09:41:293
329950,0watchdog/312731-21kthreadcore12:23:583
329950,0watchdog/310701-21df_abs11:28:533
29815050,0irq/29-eth0-tx-9204-21munin-node07:43:540
29815050,0irq/29-eth0-tx-32630-21munin-node12:38:542
29815050,0irq/29-eth0-tx-24452-21df12:33:532
29815050,0irq/29-eth0-tx-23934-21kthreadcore09:58:582
29815050,0irq/29-eth0-tx-17863-21perl11:13:542
29815050,0irq/29-eth0-tx-1104-21proc_pri11:39:002
29815050,0irq/29-eth0-tx-11005-21ssh11:46:282
29815050,0irq/29-eth0-tx-0-21swapper/212:56:322
29815050,0irq/29-eth0-tx-0-21swapper/212:26:442
29815050,0irq/29-eth0-tx-0-21swapper/209:55:502
29815050,0irq/29-eth0-tx-0-21swapper/007:54:020
29805050,0irq/28-eth0-rx-32625-21df_abs11:03:503
29805050,0irq/28-eth0-rx-26830-21perl12:53:543
29805050,0irq/28-eth0-rx-23107-21cut09:58:583
29805050,0irq/28-eth0-rx-19918-21kthreadcore08:33:563
29805050,0irq/28-eth0-rx-0-21swapper/311:58:513
29805050,0irq/28-eth0-rx-0-21swapper/311:38:563
29805050,0irq/28-eth0-rx-0-21swapper/310:29:003
259950,0migration/24283-21kthreadcore08:43:572
259950,0migration/231743-21irqcore10:44:002
259950,0migration/229645-21hwlatdetect10:23:542
259950,0migration/229092-21sh12:14:212
259950,0migration/226476-21gltestperf11:18:532
259950,0migration/223254-21unixbench_multi09:19:052
259950,0migration/222901-21gltestperf10:38:522
259950,0migration/221456-21kernelversion07:28:552
259950,0migration/221456-21kernelversion07:28:552
259950,0migration/218578-21latency_hist11:33:382
259950,0migration/218025-21kthreadcore10:53:572
259950,0migration/216874-21sh12:47:582
259950,0migration/214492-21sh10:52:222
259950,0migration/211721-21kthreadcore08:28:552
259950,0migration/21145-21kthreadcore11:58:592
196949955,0cyclictest0-21swapper/209:40:532
196949950,0cyclictest0-21swapper/212:53:332
196949950,0cyclictest0-21swapper/211:25:342
196949950,0cyclictest0-21swapper/210:29:552
196949950,0cyclictest0-21swapper/209:34:442
196939950,0cyclictest0-21swapper/111:49:301
196939950,0cyclictest0-21swapper/111:30:351
196939950,0cyclictest0-21swapper/110:36:111
196939950,0cyclictest0-21swapper/110:24:131
196929955,0cyclictest0-21swapper/012:19:230
196929950,0cyclictest0-21swapper/012:50:270
196929950,0cyclictest0-21swapper/012:26:100
196929950,0cyclictest0-21swapper/010:25:330
196929950,0cyclictest0-21swapper/010:06:290
196929950,0cyclictest0-21swapper/008:29:310
179950,0migration/1842-21idleruntime11:03:521
179950,0migration/130118-21taskset10:43:301
179950,0migration/128740-21timerandwakeup12:14:031
179950,0migration/127835-21kthreadcore09:23:541
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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