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2026-05-20 - 15:41
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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 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
32402993531,3cyclictest33-21ksoftirqd/209:05:002
32402993531,2cyclictest33-21ksoftirqd/209:05:282
32402993529,4cyclictest33-21ksoftirqd/211:55:352
32402993529,4cyclictest33-21ksoftirqd/209:58:262
32402993529,4cyclictest33-21ksoftirqd/209:27:042
32402993529,4cyclictest33-21ksoftirqd/209:27:042
32402993529,4cyclictest33-21ksoftirqd/208:02:472
32401993530,3cyclictest25-21ksoftirqd/110:45:131
32401993530,3cyclictest25-21ksoftirqd/107:22:261
32401993529,4cyclictest25-21ksoftirqd/111:02:141
32401993529,4cyclictest25-21ksoftirqd/108:43:231
32401993529,4cyclictest25-21ksoftirqd/108:17:071
32401993529,4cyclictest25-21ksoftirqd/107:53:121
32401993529,4cyclictest25-21ksoftirqd/107:33:551
32401993529,4cyclictest25-21ksoftirqd/107:18:371
3240199350,1cyclictest0-21swapper/107:25:421
32400993529,4cyclictest9-21ksoftirqd/011:28:420
32400993529,4cyclictest9-21ksoftirqd/009:31:080
32400993529,4cyclictest9-21ksoftirqd/009:31:070
32403993429,3cyclictest41-21ksoftirqd/308:33:053
32403993428,4cyclictest41-21ksoftirqd/311:13:593
32403993428,4cyclictest41-21ksoftirqd/309:33:273
32403993428,4cyclictest41-21ksoftirqd/309:33:273
32403993428,4cyclictest41-21ksoftirqd/308:01:253
32402993429,3cyclictest33-21ksoftirqd/209:48:152
32402993429,3cyclictest33-21ksoftirqd/209:00:002
32402993428,4cyclictest33-21ksoftirqd/211:31:492
32402993428,4cyclictest33-21ksoftirqd/207:55:422
32402993428,3cyclictest33-21ksoftirqd/208:13:242
32401993429,3cyclictest25-21ksoftirqd/111:38:081
32401993429,3cyclictest22564-21cron09:04:591
32401993428,4cyclictest25-21ksoftirqd/112:10:581
32401993428,4cyclictest25-21ksoftirqd/110:24:551
32401993428,4cyclictest25-21ksoftirqd/110:03:571
32401993428,4cyclictest25-21ksoftirqd/108:37:011
32401993428,4cyclictest25-21ksoftirqd/107:10:561
32400993428,4cyclictest9-21ksoftirqd/011:58:490
32400993428,4cyclictest9-21ksoftirqd/011:46:100
32400993428,4cyclictest9-21ksoftirqd/011:13:210
32400993428,4cyclictest9-21ksoftirqd/010:33:230
32400993428,4cyclictest9-21ksoftirqd/010:23:020
32400993428,4cyclictest9-21ksoftirqd/009:15:300
139391340,0ptp4l401ktimersoftd/311:15:003
32403993328,3cyclictest41-21ksoftirqd/311:20:123
32403993328,3cyclictest41-21ksoftirqd/311:20:123
32403993328,3cyclictest41-21ksoftirqd/310:46:563
32403993328,3cyclictest41-21ksoftirqd/309:10:543
32403993328,3cyclictest41-21ksoftirqd/308:25:113
32403993328,3cyclictest41-21ksoftirqd/307:55:003
32403993327,4cyclictest41-21ksoftirqd/312:12:413
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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