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2026-07-27 - 00:55
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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 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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