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2026-05-21 - 00:33
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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 50 highest latencies:
System rackdslot3.osadl.org (updated Wed May 20, 2026 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
320892205172,22sleep30-21swapper/307:09:463
320932204172,21sleep20-21swapper/207:09:492
320912204170,23sleep00-21swapper/007:09:460
320622204170,22sleep10-21swapper/107:09:241
139391660,1ptp4l391rcuc/311:53:503
315542630,5sleep23240299cyclictest11:35:262
134391590,1getstats0-21swapper/308:59:573
134391580,2getstats0-21swapper/308:54:573
139391560,1ptp4l401ktimersoftd/307:32:003
246622550,2sleep20-21swapper/212:30:132
167232540,4sleep13240199cyclictest08:50:211
139391540,1ptp4l401ktimersoftd/309:22:033
295772510,2sleep30-21swapper/310:25:173
162372500,1sleep10-21swapper/111:05:191
134391460,2getstats0-21swapper/308:49:583
57898450,9rtkit-daemon0-21swapper/010:04:400
139391450,0ptp4l401ktimersoftd/309:36:463
32402994439,3cyclictest33-21ksoftirqd/207:12:432
139391430,0ptp4l401ktimersoftd/310:33:533
134391430,1getstats13904-1kworker/3:1H11:09:573
139391420,0ptp4l401ktimersoftd/307:43:593
134391410,1getstats0-21swapper/310:19:573
134391400,2getstats0-21swapper/308:39:583
134391400,1getstats0-21swapper/311:04:573
134391400,1getstats0-21swapper/308:44:583
3240199390,37cyclictest0-21swapper/111:40:431
32401993826,10cyclictest25-21ksoftirqd/109:13:031
32403993733,3cyclictest41-21ksoftirqd/310:45:003
32403993723,4cyclictest41-21ksoftirqd/307:20:243
32402993732,3cyclictest21400-21cron07:55:002
3240199370,1cyclictest0-21swapper/112:02:441
32400993731,4cyclictest9-21ksoftirqd/011:15:130
32403993630,4cyclictest41-21ksoftirqd/312:04:263
32403993630,4cyclictest41-21ksoftirqd/307:26:583
32403993630,4cyclictest41-21ksoftirqd/307:11:263
32402993631,3cyclictest33-21ksoftirqd/209:30:112
32402993631,3cyclictest33-21ksoftirqd/209:30:102
32402993631,3cyclictest33-21ksoftirqd/209:15:172
32402993630,4cyclictest33-21ksoftirqd/207:29:102
32401993631,3cyclictest25-21ksoftirqd/111:30:101
32401993631,3cyclictest25-21ksoftirqd/110:30:101
32401993630,4cyclictest25-21ksoftirqd/112:36:581
32401993630,4cyclictest25-21ksoftirqd/109:28:071
32401993630,4cyclictest25-21ksoftirqd/109:28:071
134391360,1getstats0-21swapper/309:49:573
32403993530,3cyclictest41-21ksoftirqd/310:10:013
32403993530,3cyclictest2315-21cron09:29:593
32403993530,3cyclictest2315-21cron09:29:593
32403993529,4cyclictest41-21ksoftirqd/312:37:483
32403993529,4cyclictest41-21ksoftirqd/308:18:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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