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2026-06-04 - 01:12
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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 Wed Jun 03, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
861325958,0sleep10-21swapper/107:23:121
841725238,0sleep00-21swapper/007:20:550
850123928,0sleep30-21swapper/307:21:543
847523627,0sleep20-21swapper/207:21:412
8777991413,0cyclictest3524-21snmpd12:09:311
87789988,0cyclictest31116-21sensors12:14:402
87789966,0cyclictest3524-21snmpd10:46:142
87789960,0cyclictest0-21swapper/212:21:252
8305060,0irq/26-0000:00:11801-21dump-pmu-power12:44:192
339960,0migration/39275-21sh10:10:303
339960,0migration/330120-21munin-node08:19:443
339960,0migration/327818-21sh11:37:173
339960,0migration/326851-21sh10:21:083
339960,0migration/320898-21sh10:37:033
339960,0migration/312002-21sh10:31:233
329960,0watchdog/317827-21kthreadcore07:49:373
29815060,0irq/29-eth0-tx-18460-21munin-node12:29:342
29805060,0irq/28-eth0-rx-7740-21sh11:05:473
29805060,0irq/28-eth0-rx-23474-21hddtemp_smartct11:54:333
29805060,0irq/28-eth0-rx-12056-21sh12:44:273
29805060,0irq/28-eth0-rx-0-21swapper/311:11:573
149960,0migration/07327-21sh09:51:240
149960,0migration/020994-21kthreadcore10:54:360
149960,0migration/015286-21fschecks_time09:39:330
149960,0migration/013186-21cpuspeed_turbos08:34:320
87789955,0cyclictest0-21swapper/212:07:232
87789950,0cyclictest0-21swapper/211:46:342
87789950,0cyclictest0-21swapper/211:12:122
87789950,0cyclictest0-21swapper/207:49:462
87769950,0cyclictest0-21swapper/011:13:430
8305050,0irq/26-0000:00:0-21swapper/208:59:352
339950,0migration/38859-21kthreadcore10:49:353
339950,0migration/37486-21munin-node12:04:293
339950,0migration/37325-21latency_hist12:04:193
339950,0migration/37209-21munin-node08:29:363
339950,0migration/35861-21runrttasks07:44:323
339950,0migration/35530-21latency_hist09:34:183
339950,0migration/33553-21aten_r1power_po12:39:323
339950,0migration/332319-21aten_r1power_cu09:49:293
339950,0migration/331253-21kthreadcore07:59:363
339950,0migration/33087-21idleruntime08:49:343
339950,0migration/329357-21munin-node07:34:393
339950,0migration/329104-21perf12:54:193
339950,0migration/328735-21kthreadcore12:14:363
339950,0migration/325564-21kthreadcore09:04:373
339950,0migration/321682-21sh11:52:523
339950,0migration/321292-21munin-node08:39:353
339950,0migration/320655-21kthreadcore07:29:363
339950,0migration/317246-21munin-node12:09:343
339950,0migration/316731-21kthreadcore09:19:363
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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