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2026-08-29 - 04:18
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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 Sat Aug 29, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
251323627,0sleep20-21swapper/219:26:322
227423526,0sleep10-21swapper/119:26:221
950822925,0sleep00-21swapper/019:31:020
947322925,0sleep30-21swapper/319:30:373
96139966,0cyclictest0-21swapper/200:46:372
96139965,0cyclictest1418-21ssh22:01:142
96049960,0cyclictest0-21swapper/000:41:420
339960,0migration/38119-21sh00:52:053
339960,0migration/37280-21kthreadcore19:51:403
339960,0migration/331038-21sh00:30:103
339960,0migration/326869-21irqcore21:16:443
339960,0migration/320217-21sh00:03:383
339960,0migration/317570-21sh22:08:103
339960,0migration/31463-21munin-node23:16:383
339960,0migration/312372-21sh00:00:413
29805060,0irq/28-eth0-rx-31920-21sh00:47:163
29805060,0irq/28-eth0-rx-15166-21diskstats00:21:373
29805060,0irq/28-eth0-rx-13222-21sh00:17:483
27160,0ktimersoftd/20-21swapper/220:36:352
149960,0migration/09612-21kthreadcore23:01:390
149960,0migration/023575-21aten_r1power_vo19:41:340
149960,0migration/018014-21cpuspeed_turbos23:26:370
96139955,0cyclictest0-21swapper/222:36:332
96139955,0cyclictest0-21swapper/200:40:102
96139950,0cyclictest0-21swapper/222:49:292
96139950,0cyclictest0-21swapper/221:47:122
96059955,0cyclictest0-21swapper/122:22:271
96059950,0cyclictest0-21swapper/123:46:001
96059950,0cyclictest0-21swapper/122:54:081
96059950,0cyclictest0-21swapper/122:30:291
96059950,0cyclictest0-21swapper/100:44:391
96059950,0cyclictest0-21swapper/100:32:121
96049955,0cyclictest0-21swapper/023:46:310
96049953,0cyclictest10001-21kworker/0:022:56:420
96049950,0cyclictest0-21swapper/023:43:030
96049950,0cyclictest0-21swapper/022:42:590
8305050,0irq/26-0000:00:18015-21tr20:21:393
35150,0ktimersoftd/30-21swapper/322:04:453
339950,0migration/39279-21gltestperf21:46:373
339950,0migration/38786-21munin-node21:26:373
339950,0migration/38302-21idleruntime23:01:373
339950,0migration/37111-21kthreadcore20:11:403
339950,0migration/36444-21sh00:32:423
339950,0migration/331688-21kthreadcore20:06:403
339950,0migration/329493-21munin-node22:36:353
339950,0migration/328419-21hddtemp_smartct22:16:363
339950,0migration/327500-21sh23:50:213
339950,0migration/325729-21kthreadcore00:06:403
339950,0migration/319601-21kthreadcore21:31:403
339950,0migration/318648-21kernelversion21:51:403
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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