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2026-05-21 - 10:22
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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 Thu May 21, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1911724839,0sleep10-21swapper/119:19:291
1930523526,0sleep20-21swapper/219:21:422
1912123522,0sleep00-21swapper/019:19:320
1909423228,0sleep30-21swapper/319:19:153
195099990,0cyclictest0-21swapper/200:38:372
339960,0migration/37766-21sh22:41:483
339960,0migration/331883-21sh23:51:483
339960,0migration/330167-21sh00:47:143
339960,0migration/329567-21missed_timers22:33:323
339960,0migration/326936-21sh23:10:493
339960,0migration/326308-21sh00:08:173
339960,0migration/325824-21sh00:07:343
339960,0migration/321273-21sh22:13:133
339960,0migration/318026-21kthreadcore21:33:303
339960,0migration/316395-21sh22:46:473
339960,0migration/315106-21needreboot23:58:333
29805060,0irq/28-eth0-rx-9789-21cut22:23:303
29805060,0irq/28-eth0-rx-31969-21cut21:58:303
29805060,0irq/28-eth0-rx-26997-21kthreadcore23:28:323
29805060,0irq/28-eth0-rx-16563-21kthreadcore22:28:293
195099960,0cyclictest0-21swapper/220:13:262
195089960,0cyclictest0-21swapper/122:53:261
195079960,0cyclictest0-21swapper/022:28:210
4150,0ktimersoftd/00-21swapper/023:20:230
339950,0migration/39522-21munin-node20:23:243
339950,0migration/3936-21fschecks_time23:53:263
339950,0migration/39194-21taskset22:59:273
339950,0migration/38843-21irqrtprio21:28:303
339950,0migration/36433-21kthreadcore23:18:293
339950,0migration/36078-21kthreadcore22:03:293
339950,0migration/35044-21taskset19:56:233
339950,0migration/34828-21kthreadcore21:43:353
339950,0migration/3473-21kthreadcore20:38:283
339950,0migration/33942-21kthreadcore20:18:313
339950,0migration/332509-21kthreadcore00:48:303
339950,0migration/332274-21kthreadcore20:58:293
339950,0migration/331674-21irqcore23:33:283
339950,0migration/331278-21kthreadcore22:53:303
339950,0migration/328827-21kthreadcore19:28:283
339950,0migration/326850-21taskset20:13:083
339950,0migration/326242-21unixbench_singl19:23:323
339950,0migration/325675-21kthreadcore20:33:303
339950,0migration/32404-21kthreadcore22:18:303
339950,0migration/319706-21kthreadcore21:13:303
339950,0migration/319370-21sh00:22:183
339950,0migration/319133-21sh23:08:073
339950,0migration/316930-21kthreadcore20:03:273
339950,0migration/316818-21kthreadcore00:38:303
339950,0migration/312817-21munin-node22:08:233
339950,0migration/311626-21kthreadcore23:38:303
339950,0migration/310419-21kthreadcore20:43:293
329950,0watchdog/34442-21grep21:03:273
329950,0watchdog/316600-21df_inode19:43:233
29815050,0irq/29-eth0-tx-9364-21munin-node21:08:260
29805050,0irq/28-eth0-rx-5263-21grep19:33:303
29805050,0irq/28-eth0-rx-30735-21munin-run21:23:123
29805050,0irq/28-eth0-rx-17066-21cat22:48:123
29805050,0irq/28-eth0-rx-11932-21kthreadcore19:38:293
29805050,0irq/28-eth0-rx-0-21swapper/323:43:303
29805050,0irq/28-eth0-rx-0-21swapper/323:24:103
29805050,0irq/28-eth0-rx-0-21swapper/323:13:343
29805050,0irq/28-eth0-rx-0-21swapper/321:56:343
29805050,0irq/28-eth0-rx-0-21swapper/321:49:473
29805050,0irq/28-eth0-rx-0-21swapper/320:53:323
29805050,0irq/28-eth0-rx-0-21swapper/300:33:323
29805050,0irq/28-eth0-rx-0-21swapper/300:13:263
27150,0ktimersoftd/20-21swapper/223:11:452
195099955,0cyclictest0-21swapper/223:41:042
195099955,0cyclictest0-21swapper/223:01:022
195099955,0cyclictest0-21swapper/222:47:092
195099955,0cyclictest0-21swapper/219:28:112
195099950,0cyclictest0-21swapper/222:13:062
195099950,0cyclictest0-21swapper/200:37:502
195079955,0cyclictest0-21swapper/023:59:390
195079955,0cyclictest0-21swapper/023:25:350
195079955,0cyclictest0-21swapper/022:38:170
195079955,0cyclictest0-21swapper/022:14:290
195079955,0cyclictest0-21swapper/021:42:380
195079955,0cyclictest0-21swapper/020:48:240
195079955,0cyclictest0-21swapper/000:51:120
195079955,0cyclictest0-21swapper/000:43:000
195079954,0cyclictest26862-21sadc20:13:110
179950,0migration/19159-21sh23:58:231
179950,0migration/18605-21switchtime22:58:371
179950,0migration/130290-21munin-node22:33:391
179950,0migration/120478-21fschecks_time19:23:211
179950,0migration/118090-21kthreadcore21:33:301
179950,0migration/111742-21sh00:34:011
179950,0migration/111267-21munin-node23:03:241
149950,0migration/031718-21fschecks_time21:23:270
149950,0migration/03121-21sh22:01:370
149950,0migration/019393-21sh00:22:220
149950,0migration/018563-21sh21:52:310
149950,0migration/01090-21sh22:56:120
8305040,0irq/26-0000:00:8957-21latency_hist23:58:132
8305040,0irq/26-0000:00:0-21swapper/221:08:262
329940,0watchdog/30-21swapper/321:23:233
29815040,0irq/29-eth0-tx-30754-21ssh23:48:422
29815040,0irq/29-eth0-tx-1293-21ssh23:53:272
29815040,0irq/29-eth0-tx-0-21swapper/223:43:322
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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