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2026-05-31 - 08:30
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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
Characteristics of the 20 highest latencies:
System rackdslot3.osadl.org (updated Sun May 31, 2026 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81302206173,22sleep00-21swapper/019:08:470
80402205172,22sleep30-21swapper/319:07:393
79462203170,22sleep20-21swapper/219:06:332
79452203169,22sleep10-21swapper/119:06:321
82232132105,15sleep00-21swapper/019:10:010
325452780,2sleep10-21swapper/123:20:251
851599760,74cyclictest0-21swapper/122:20:531
8515997511,62cyclictest0-21swapper/121:46:131
851599720,70cyclictest0-21swapper/120:35:331
139391650,1ptp4l401ktimersoftd/319:30:233
137662610,1sleep00-21swapper/019:20:150
164152600,4sleep016411-21latency_hist20:35:010
47992560,3sleep2311rcuc/222:25:142
851499551,4cyclictest24547-21runrttasks19:40:290
305482550,2sleep30-21swapper/322:10:183
30042550,4sleep03009-21irqrtprio22:20:180
851699516,6cyclictest12517-21awk23:45:282
851699512,9cyclictest12964-21needreboot20:25:232
8516995118,5cyclictest33-21ksoftirqd/222:02:492
851699510,8cyclictest13657-21iostat_ios21:35:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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