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2026-08-08 - 14:24
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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 100 highest latencies:
System rackdslot4.osadl.org (updated Sat Aug 08, 2026 00:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
207742233167,22sleep30-21swapper/319:05:083
227032203169,22sleep00-21swapper/019:06:220
207682200168,21sleep20-21swapper/219:05:032
207672200167,22sleep10-21swapper/119:05:021
270262610,2sleep30-21swapper/321:25:253
270262610,2sleep30-21swapper/321:25:243
138491600,0ptp4l401ktimersoftd/323:40:253
138491580,49ptp4l0-21swapper/319:10:003
138491560,1ptp4l401ktimersoftd/320:24:033
151372550,2sleep20-21swapper/223:15:002
50798500,22rtkit-daemon8881-21iostat_ios20:50:170
189402460,3sleep318941-21irqrtprio00:25:173
23286994539,3cyclictest12690-21latency_hist23:10:002
138491430,1ptp4l401ktimersoftd/321:42:433
138491420,0ptp4l401ktimersoftd/323:45:223
138491410,0ptp4l401ktimersoftd/320:05:143
23287994028,10cyclictest41-21ksoftirqd/320:25:113
23286993933,3cyclictest12820-21sh21:00:002
23286993911,27cyclictest0-21swapper/200:20:242
138491390,1ptp4l401ktimersoftd/322:18:523
138491390,1ptp4l401ktimersoftd/300:09:443
138491390,0ptp4l401ktimersoftd/323:18:133
23286993831,5cyclictest33-21ksoftirqd/222:17:282
23285993833,3cyclictest25-21ksoftirqd/120:05:001
138491380,0ptp4l401ktimersoftd/321:30:133
23285993731,4cyclictest25-21ksoftirqd/123:22:261
23285993731,4cyclictest25-21ksoftirqd/100:40:011
23284993731,4cyclictest9-21ksoftirqd/020:23:200
23284993731,4cyclictest9-21ksoftirqd/019:30:430
23284993729,5cyclictest9-21ksoftirqd/022:30:080
23287993631,3cyclictest41-21ksoftirqd/323:55:183
23287993630,4cyclictest41-21ksoftirqd/322:58:483
23287993630,4cyclictest41-21ksoftirqd/321:53:423
23287993630,4cyclictest41-21ksoftirqd/320:46:023
23286993631,3cyclictest33-21ksoftirqd/200:10:002
23286993630,4cyclictest33-21ksoftirqd/219:43:312
23286993630,4cyclictest33-21ksoftirqd/219:28:382
23286993630,4cyclictest33-21ksoftirqd/200:13:582
23285993630,4cyclictest25-21ksoftirqd/123:44:591
23285993630,4cyclictest25-21ksoftirqd/122:35:401
23285993630,4cyclictest25-21ksoftirqd/120:59:041
23285993630,4cyclictest25-21ksoftirqd/119:26:291
23285993630,4cyclictest25-21ksoftirqd/100:30:121
23285993630,3cyclictest25-21ksoftirqd/123:15:131
23285993629,5cyclictest25-21ksoftirqd/119:21:511
23284993630,3cyclictest9-21ksoftirqd/021:25:110
23284993630,3cyclictest9-21ksoftirqd/021:25:110
23287993530,3cyclictest41-21ksoftirqd/300:20:583
23287993529,4cyclictest41-21ksoftirqd/323:36:113
23287993529,4cyclictest41-21ksoftirqd/322:50:453
23287993529,4cyclictest41-21ksoftirqd/320:59:103
23287993529,4cyclictest41-21ksoftirqd/320:38:403
23287993529,4cyclictest41-21ksoftirqd/319:41:393
23287993529,4cyclictest41-21ksoftirqd/319:38:343
23287993529,4cyclictest41-21ksoftirqd/319:31:043
23287993529,4cyclictest41-21ksoftirqd/300:18:193
23286993530,3cyclictest33-21ksoftirqd/223:35:002
23286993530,3cyclictest33-21ksoftirqd/223:21:212
23286993529,4cyclictest33-21ksoftirqd/223:45:452
23286993529,4cyclictest33-21ksoftirqd/223:01:242
23286993529,4cyclictest33-21ksoftirqd/222:22:532
23286993529,4cyclictest33-21ksoftirqd/221:38:122
23285993530,3cyclictest25-21ksoftirqd/123:45:131
23285993530,3cyclictest25-21ksoftirqd/123:00:171
23285993530,3cyclictest25-21ksoftirqd/120:45:001
23285993529,4cyclictest25-21ksoftirqd/121:48:341
23285993529,3cyclictest25-21ksoftirqd/119:30:181
23284993529,4cyclictest9-21ksoftirqd/022:43:160
23284993529,4cyclictest9-21ksoftirqd/022:25:560
23284993529,4cyclictest9-21ksoftirqd/022:09:310
23284993529,4cyclictest9-21ksoftirqd/022:01:330
23284993529,4cyclictest9-21ksoftirqd/021:42:030
23284993529,4cyclictest9-21ksoftirqd/021:37:060
23284993529,4cyclictest9-21ksoftirqd/020:03:460
23284993529,4cyclictest9-21ksoftirqd/019:24:030
23284993529,4cyclictest9-21ksoftirqd/019:18:130
23284993529,4cyclictest9-21ksoftirqd/000:17:170
23287993430,3cyclictest41-21ksoftirqd/319:30:003
23287993429,3cyclictest41-21ksoftirqd/320:20:003
23287993429,3cyclictest41-21ksoftirqd/300:30:193
23287993428,4cyclictest41-21ksoftirqd/323:54:003
23287993428,4cyclictest41-21ksoftirqd/323:54:003
23287993428,4cyclictest41-21ksoftirqd/323:31:253
23287993428,4cyclictest41-21ksoftirqd/321:18:193
23287993428,4cyclictest41-21ksoftirqd/320:12:203
23287993428,4cyclictest41-21ksoftirqd/300:14:063
23286993429,3cyclictest33-21ksoftirqd/219:16:202
23286993429,3cyclictest33-21ksoftirqd/219:10:222
23286993428,4cyclictest33-21ksoftirqd/223:36:592
23286993428,4cyclictest33-21ksoftirqd/221:18:182
23286993428,4cyclictest33-21ksoftirqd/221:03:022
23286993428,4cyclictest33-21ksoftirqd/220:52:352
23286993428,4cyclictest33-21ksoftirqd/220:23:292
23286993428,4cyclictest33-21ksoftirqd/220:15:362
23286993428,4cyclictest33-21ksoftirqd/200:27:502
23286993428,3cyclictest33-21ksoftirqd/222:35:172
2328699340,3cyclictest121rcu_preempt20:06:512
23285993429,3cyclictest25-21ksoftirqd/122:55:171
23285993429,3cyclictest25-21ksoftirqd/120:21:431
23285993429,3cyclictest25-21ksoftirqd/119:45:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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