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2026-09-06 - 14:28
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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 50 highest latencies:
System rack1slot2.osadl.org (updated Sun Sep 06, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2289995757,0cyclictest27443-21kworker/2:209:27:332
189424940,0sleep30-21swapper/307:28:263
2287994747,0cyclictest10929-21kworker/0:009:36:120
2289993434,0cyclictest83050irq/26-0000:00:09:36:112
201423425,0sleep20-21swapper/207:29:452
205723322,0sleep00-21swapper/007:30:150
146523324,0sleep10-21swapper/107:27:281
2288991212,0cyclictest2061-21jbd2/md0-809:27:331
29805070,0irq/28-eth0-rx-0-21swapper/311:40:353
35160,0ktimersoftd/30-21swapper/312:17:573
35160,0ktimersoftd/30-21swapper/310:50:173
339960,0migration/331184-21sh11:13:443
339960,0migration/322515-21sh09:37:073
339960,0migration/318582-21sh10:27:463
29805060,0irq/28-eth0-rx-17751-21df11:27:183
27160,0ktimersoftd/20-21swapper/209:38:472
22879966,0cyclictest6688-21munin-node09:27:300
149960,0migration/026118-21sh11:48:000
8305050,0irq/26-0000:00:5495-21rt-features12:32:272
339950,0migration/39940-21cpuspeed_turbos12:57:213
339950,0migration/39860-21kthreadcore11:02:243
339950,0migration/38271-21fschecks_count12:37:193
339950,0migration/37252-21kthreadcore08:17:233
339950,0migration/36131-21taskset09:23:313
339950,0migration/34034-21kthreadcore07:52:213
339950,0migration/331733-21idleruntime10:57:213
339950,0migration/331500-21latency_hist08:37:043
339950,0migration/331357-21munin-node09:42:163
339950,0migration/330534-21kthreadcore08:57:253
339950,0migration/329953-21taskset12:28:083
339950,0migration/328706-21munin-node11:52:193
339950,0migration/328202-21munin-node10:17:213
339950,0migration/325118-21kthreadcore11:47:233
339950,0migration/324910-21kthreadcore10:32:243
339950,0migration/324586-21taskset09:17:063
339950,0migration/32379-21latency10:37:233
339950,0migration/317740-21irqrtprio12:42:223
339950,0migration/314954-21sh12:02:243
339950,0migration/313916-21kthreadcore11:42:243
339950,0migration/313352-21kthreadcore11:22:243
339950,0migration/313135-21kthreadcore08:22:223
339950,0migration/310549-21kthreadcore10:42:233
329950,0watchdog/38656-21ssh12:55:043
329950,0watchdog/323693-21ssh11:11:523
329950,0watchdog/320255-21taskset08:47:363
329950,0watchdog/316652-21grep10:07:323
329950,0watchdog/30-21swapper/308:32:163
29815050,0irq/29-eth0-tx-0-21swapper/209:45:112
29815050,0irq/29-eth0-tx-0-21swapper/008:59:100
29815050,0irq/29-eth0-tx-0-21swapper/007:42:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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