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2026-04-26 - 11:43
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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 Apr 26, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2883324634,0sleep10-21swapper/119:17:181
2889623927,0sleep20-21swapper/219:18:032
2877023526,0sleep30-21swapper/319:16:363
2221823524,0sleep00-21swapper/019:16:130
339960,0migration/331589-21kthreadcore21:51:263
339960,0migration/327346-21irqrtprio19:41:253
339960,0migration/324598-21sh21:28:193
339960,0migration/323620-21munin-node00:36:243
339960,0migration/31396-21munin-node22:31:233
339960,0migration/311610-21switchtime00:26:353
29805060,0irq/28-eth0-rx-28116-21iostat_ios22:46:263
29805060,0irq/28-eth0-rx-23411-21ssh22:23:303
292319965,0cyclictest5451-21cat23:26:340
179960,0migration/132253-21munin-node22:11:271
8305050,0irq/26-0000:00:29879-21latency_hist20:51:082
8305050,0irq/26-0000:00:25670-21crond21:31:082
8305050,0irq/26-0000:00:17892-21dump-pmu-power23:56:092
4150,0ktimersoftd/00-21swapper/022:17:020
339950,0migration/39683-21switchtime22:51:353
339950,0migration/37115-21latency_hist00:46:093
339950,0migration/34603-21latency22:11:293
339950,0migration/332764-21kthreadcore20:06:253
339950,0migration/33001-21timerandwakeup00:21:363
339950,0migration/327369-21munin-node21:11:243
339950,0migration/326259-21cpuspeed_turbos21:31:213
339950,0migration/32475-21sh21:36:203
339950,0migration/321193-21taskset22:03:303
339950,0migration/321065-21latency19:56:273
339950,0migration/320384-21cpu21:46:213
339950,0migration/319220-21kthreadcore23:36:273
339950,0migration/315822-21kthreadcore22:56:283
339950,0migration/315537-21latency_hist20:41:083
339950,0migration/312233-21kthreadcore21:21:273
339950,0migration/311726-21aten_r1power_fr00:11:213
329950,0watchdog/38188-21perl00:46:243
329950,0watchdog/37073-21ssh23:46:283
329950,0watchdog/35630-21perl20:56:233
329950,0watchdog/323466-21if_err_eth122:06:233
329950,0watchdog/320255-21sh00:16:203
329950,0watchdog/317398-21sort19:31:273
329950,0watchdog/314575-21perl00:31:243
329950,0watchdog/313577-21cut21:41:273
329950,0watchdog/310082-21cut22:16:273
329950,0watchdog/30-21swapper/322:27:523
329950,0watchdog/30-21swapper/320:11:273
29815050,0irq/29-eth0-tx-4319-21munin-node19:26:250
29815050,0irq/29-eth0-tx-29363-21sort21:51:212
29815050,0irq/29-eth0-tx-22654-21munin-node23:21:342
29815050,0irq/29-eth0-tx-18743-21munin-node19:36:290
29815050,0irq/29-eth0-tx-10821-21ssh22:53:552
29815050,0irq/29-eth0-tx-0-21swapper/223:31:472
29805050,0irq/28-eth0-rx-9804-21aten_r1power_po22:36:213
29805050,0irq/28-eth0-rx-9779-21grep19:26:273
29805050,0irq/28-eth0-rx-6179-21kthreadcore00:06:263
29805050,0irq/28-eth0-rx-314-21kthreadcore23:06:273
29805050,0irq/28-eth0-rx-29166-21kthreadcore23:41:283
29805050,0irq/28-eth0-rx-22974-21cut21:06:263
29805050,0irq/28-eth0-rx-0-21swapper/323:56:273
29805050,0irq/28-eth0-rx-0-21swapper/323:32:553
29805050,0irq/28-eth0-rx-0-21swapper/323:28:043
29805050,0irq/28-eth0-rx-0-21swapper/323:18:023
29805050,0irq/28-eth0-rx-0-21swapper/323:14:133
29805050,0irq/28-eth0-rx-0-21swapper/323:01:273
29805050,0irq/28-eth0-rx-0-21swapper/300:02:003
292339955,0cyclictest0-21swapper/223:56:222
292339955,0cyclictest0-21swapper/222:21:082
292329950,0cyclictest0-21swapper/123:53:541
292329950,0cyclictest0-21swapper/122:49:441
292329950,0cyclictest0-21swapper/121:56:171
292329950,0cyclictest0-21swapper/119:31:331
292319955,0cyclictest25376-21kworker/0:021:21:090
292319955,0cyclictest25376-21kworker/0:021:16:090
292319955,0cyclictest25376-21kworker/0:021:06:350
292319955,0cyclictest21231-21kworker/0:220:56:210
292319955,0cyclictest21231-21kworker/0:220:51:190
292319955,0cyclictest21231-21kworker/0:220:47:030
292319955,0cyclictest21231-21kworker/0:220:41:230
292319955,0cyclictest21231-21kworker/0:220:36:290
292319955,0cyclictest21231-21kworker/0:220:31:190
292319955,0cyclictest21231-21kworker/0:220:26:270
292319955,0cyclictest21231-21kworker/0:220:21:250
292319955,0cyclictest21231-21kworker/0:220:16:290
292319955,0cyclictest21231-21kworker/0:220:06:210
292319955,0cyclictest21231-21kworker/0:220:01:090
292319955,0cyclictest21231-21kworker/0:219:56:090
292319955,0cyclictest21231-21kworker/0:219:51:090
292319955,0cyclictest21231-21kworker/0:219:41:090
292319955,0cyclictest21231-21kworker/0:219:31:310
292319955,0cyclictest21231-21kworker/0:219:21:210
292319955,0cyclictest0-21swapper/023:02:070
292319955,0cyclictest0-21swapper/022:37:030
292319955,0cyclictest0-21swapper/022:33:260
292319955,0cyclictest0-21swapper/022:26:110
292319950,0cyclictest0-21swapper/023:40:170
292319950,0cyclictest0-21swapper/022:56:170
292319950,0cyclictest0-21swapper/022:23:390
292319950,0cyclictest0-21swapper/000:33:430
259950,0migration/25626-21sh00:42:182
259950,0migration/221473-21sh23:18:372
259950,0migration/220637-21runrttasks22:01:582
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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