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2026-04-15 - 23:03
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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 Wed Apr 15, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2138626362,0sleep10-21swapper/107:19:181
2116925036,0sleep00-21swapper/007:16:480
2123323627,0sleep30-21swapper/307:17:323
1454623526,0sleep20-21swapper/207:15:182
215409976,0cyclictest0-21swapper/008:55:350
339960,0migration/38313-21sh12:48:503
339960,0migration/34351-21taskset09:56:053
339960,0migration/329255-21sh09:54:273
339960,0migration/315020-21munin-node11:35:373
339960,0migration/313221-21munin-node12:30:393
339960,0migration/311756-21sh09:43:593
339960,0migration/311645-21sh10:57:253
329960,0watchdog/320881-21chrt11:04:123
29815060,0irq/29-eth0-tx-11293-21munin-node08:20:340
29805060,0irq/28-eth0-rx-19274-21head09:30:283
215429960,0cyclictest0-21swapper/212:21:262
215419960,0cyclictest0-21swapper/110:24:191
149960,0migration/08437-21sh10:35:390
149960,0migration/06734-21sh10:16:140
149960,0migration/032293-21sh12:44:440
149960,0migration/031313-21sh11:27:550
8305050,0irq/26-0000:00:21516-21users10:05:422
339950,0migration/38481-21taskset11:35:123
339950,0migration/37812-21cpuspeed_turbos07:55:293
339950,0migration/36655-21kthreadcore07:30:333
339950,0migration/3520-21kthreadcore08:10:353
339950,0migration/331497-21sh11:28:253
339950,0migration/330506-21kthreadcore12:05:343
339950,0migration/329409-21latency_hist08:55:163
339950,0migration/327283-21kthreadcore07:45:323
339950,0migration/324984-21switchtime09:10:403
339950,0migration/322859-21irqcore11:05:333
339950,0migration/322607-21kthreadcore12:00:343
339950,0migration/319403-21taskset12:15:383
339950,0migration/319199-21diskmemload11:59:363
339950,0migration/318220-21taskset09:07:203
339950,0migration/318019-21taskset10:42:183
339950,0migration/316843-21kthreadcore10:05:343
339950,0migration/31365-21fschecks_time09:20:293
339950,0migration/310378-21munin-node09:00:353
329950,0watchdog/323577-21kthreadcore10:45:363
329950,0watchdog/322855-21perl08:05:313
329950,0watchdog/31270-21irqrtprio10:15:313
29815050,0irq/29-eth0-tx-8154-21chrt10:20:092
29815050,0irq/29-eth0-tx-14460-21kthreadcore09:45:332
29815050,0irq/29-eth0-tx-0-21swapper/211:43:122
29815050,0irq/29-eth0-tx-0-21swapper/211:14:332
29815050,0irq/29-eth0-tx-0-21swapper/210:20:562
29815050,0irq/29-eth0-tx-0-21swapper/210:10:292
29815050,0irq/29-eth0-tx-0-21swapper/209:43:282
29815050,0irq/29-eth0-tx-0-21swapper/209:31:312
29815050,0irq/29-eth0-tx-0-21swapper/009:20:250
29815050,0irq/29-eth0-tx-0-21swapper/008:26:340
29815050,0irq/29-eth0-tx-0-21swapper/008:05:460
29815050,0irq/29-eth0-tx-0-21swapper/007:57:260
29805050,0irq/28-eth0-rx-8916-21diskstats10:20:293
29805050,0irq/28-eth0-rx-8169-21kthreadcore11:15:343
29805050,0irq/28-eth0-rx-6489-21df10:00:293
29805050,0irq/28-eth0-rx-601-21diskstats07:50:283
29805050,0irq/28-eth0-rx-29836-21python10:10:383
29805050,0irq/28-eth0-rx-28281-21grep08:50:383
29805050,0irq/28-eth0-rx-2398-21entropy10:35:293
29805050,0irq/28-eth0-rx-14341-21cut09:25:353
29805050,0irq/28-eth0-rx-11830-21ssh12:12:013
29805050,0irq/28-eth0-rx-0-21swapper/311:21:513
29805050,0irq/28-eth0-rx-0-21swapper/310:50:313
29805050,0irq/28-eth0-rx-0-21swapper/310:25:333
29805050,0irq/28-eth0-rx-0-21swapper/309:45:203
259950,0migration/232758-21runrttasks12:45:242
259950,0migration/231554-21kthreadcore11:45:352
259950,0migration/222813-21irqcore11:05:332
259950,0migration/21832-21sendmail_mailqu10:50:382
259950,0migration/215789-21cpuspeed_turbos12:35:302
259950,0migration/215214-21smart_sdb11:35:402
259950,0migration/21446-21kthreadcore09:55:342
259950,0migration/214278-21kthreadcore10:40:342
259950,0migration/210610-21missed_timers12:10:352
249950,0watchdog/212534-21memory11:15:362
249950,0watchdog/20-21swapper/209:37:152
215429955,0cyclictest0-21swapper/211:34:182
215429955,0cyclictest0-21swapper/210:56:182
215429955,0cyclictest0-21swapper/210:36:172
215429955,0cyclictest0-21swapper/210:26:022
215429955,0cyclictest0-21swapper/209:22:492
215429955,0cyclictest0-21swapper/208:50:392
215429950,0cyclictest0-21swapper/212:03:092
215429950,0cyclictest0-21swapper/211:04:022
215419950,0cyclictest0-21swapper/111:39:211
215419950,0cyclictest0-21swapper/109:42:321
215419950,0cyclictest0-21swapper/107:47:171
215409955,0cyclictest0-21swapper/011:23:190
215409950,0cyclictest0-21swapper/010:42:480
179950,0migration/19490-21kthreadcore10:00:341
179950,0migration/19226-21kthreadcore12:30:341
179950,0migration/1722-21missed_timers09:35:341
179950,0migration/16657-21latency_hist12:30:171
179950,0migration/13899-21latency_hist08:15:161
179950,0migration/131625-21munin-node11:10:351
179950,0migration/129930-21kthreadcore09:15:341
179950,0migration/129039-21sh09:53:511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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