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2026-04-09 - 11:10
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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 Thu Apr 09, 2026 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491205171,22phc2sys0-21swapper/319:07:433
114532205171,22sleep10-21swapper/119:08:471
114522204170,23sleep00-21swapper/019:08:460
115342202169,22sleep20-21swapper/219:09:452
844221450,1sleep30-21swapper/321:15:253
131282860,7sleep01184599cyclictest23:40:240
144852680,1sleep214486-21/usr/sbin/munin22:35:272
27972600,3sleep20-21swapper/200:25:262
27972600,3sleep20-21swapper/200:25:262
139391570,1ptp4l401ktimersoftd/320:51:463
139391530,1ptp4l391rcuc/322:05:403
139391510,1ptp4l401ktimersoftd/321:33:553
139391510,1ptp4l391rcuc/322:45:383
257272500,1sleep325728-21mandb00:07:153
71352480,2sleep10-21swapper/123:30:141
11848994842,3cyclictest6528-21latency_hist23:30:003
11848994842,3cyclictest6528-21latency_hist23:30:003
139391440,0ptp4l401ktimersoftd/322:44:313
139391430,0ptp4l401ktimersoftd/322:50:193
139391420,0ptp4l401ktimersoftd/321:51:093
11848994133,5cyclictest27286-21latency_hist20:50:003
11846994135,4cyclictest16297-21cron21:35:001
139391390,1ptp4l401ktimersoftd/321:45:273
139391380,0ptp4l401ktimersoftd/319:48:323
11848993834,2cyclictest41-21ksoftirqd/323:49:593
11846993832,4cyclictest25-21ksoftirqd/122:55:481
139391370,0ptp4l401ktimersoftd/321:58:433
11848993732,3cyclictest41-21ksoftirqd/323:20:003
11846993731,4cyclictest25-21ksoftirqd/121:47:121
11846993731,4cyclictest25-21ksoftirqd/120:03:501
139391360,0ptp4l401ktimersoftd/322:20:103
11848993630,4cyclictest41-21ksoftirqd/300:24:043
11848993629,4cyclictest41-21ksoftirqd/320:09:103
11847993630,4cyclictest33-21ksoftirqd/222:25:562
11847993630,4cyclictest33-21ksoftirqd/222:25:562
11847993630,4cyclictest33-21ksoftirqd/219:42:532
11847993630,4cyclictest33-21ksoftirqd/219:42:532
11846993631,3cyclictest25-21ksoftirqd/119:30:091
11846993631,3cyclictest25-21ksoftirqd/100:20:101
11846993630,4cyclictest25-21ksoftirqd/122:13:281
11846993630,4cyclictest25-21ksoftirqd/121:51:011
1184899353,2cyclictest121rcu_preempt23:03:393
11848993530,3cyclictest41-21ksoftirqd/320:00:003
11848993529,4cyclictest41-21ksoftirqd/320:18:003
11847993530,3cyclictest33-21ksoftirqd/221:03:452
11847993529,4cyclictest33-21ksoftirqd/223:25:342
11847993529,4cyclictest33-21ksoftirqd/223:25:342
11847993529,4cyclictest33-21ksoftirqd/223:18:112
11847993529,4cyclictest33-21ksoftirqd/221:27:032
11847993529,4cyclictest33-21ksoftirqd/221:07:502
11847993529,4cyclictest33-21ksoftirqd/200:18:412
11847993528,5cyclictest33-21ksoftirqd/223:40:372
11846993531,2cyclictest25-21ksoftirqd/121:15:001
11846993530,3cyclictest25-21ksoftirqd/123:44:211
11846993530,3cyclictest25-21ksoftirqd/122:05:001
11846993529,4cyclictest25-21ksoftirqd/123:51:271
11846993529,4cyclictest25-21ksoftirqd/122:39:111
11846993529,4cyclictest25-21ksoftirqd/120:39:571
11845993530,3cyclictest9-21ksoftirqd/023:55:120
11845993530,3cyclictest9-21ksoftirqd/023:55:120
11848993428,4cyclictest41-21ksoftirqd/321:35:093
11848993427,5cyclictest41-21ksoftirqd/300:17:143
11847993429,3cyclictest33-21ksoftirqd/222:10:132
11847993429,3cyclictest33-21ksoftirqd/220:40:182
11847993429,3cyclictest33-21ksoftirqd/200:37:562
11847993428,4cyclictest33-21ksoftirqd/219:58:422
11847993428,4cyclictest33-21ksoftirqd/200:34:502
11847993428,4cyclictest33-21ksoftirqd/200:13:072
11847993427,5cyclictest33-21ksoftirqd/222:42:292
11847993427,5cyclictest33-21ksoftirqd/219:37:082
11847993427,4cyclictest33-21ksoftirqd/221:55:442
11847993427,4cyclictest33-21ksoftirqd/220:19:082
11846993429,3cyclictest25-21ksoftirqd/119:55:121
11846993428,4cyclictest25-21ksoftirqd/123:09:001
11846993428,4cyclictest25-21ksoftirqd/123:05:001
11846993428,4cyclictest25-21ksoftirqd/122:44:441
11846993428,4cyclictest25-21ksoftirqd/122:20:581
11846993428,4cyclictest25-21ksoftirqd/120:55:531
11846993428,4cyclictest25-21ksoftirqd/120:23:241
11846993428,4cyclictest25-21ksoftirqd/100:38:591
11846993428,4cyclictest25-21ksoftirqd/100:32:561
11845993428,4cyclictest9-21ksoftirqd/023:46:420
11845993428,4cyclictest9-21ksoftirqd/022:29:230
11845993428,4cyclictest9-21ksoftirqd/022:29:230
11845993428,4cyclictest9-21ksoftirqd/021:25:290
11845993428,4cyclictest9-21ksoftirqd/020:38:150
11845993428,4cyclictest9-21ksoftirqd/020:14:480
11845993428,4cyclictest9-21ksoftirqd/019:16:290
11845993428,4cyclictest9-21ksoftirqd/000:17:430
11848993328,3cyclictest41-21ksoftirqd/322:40:013
11848993328,3cyclictest41-21ksoftirqd/322:20:003
11848993328,3cyclictest41-21ksoftirqd/320:30:173
11848993327,4cyclictest41-21ksoftirqd/323:21:173
11848993327,4cyclictest41-21ksoftirqd/323:11:513
11848993327,4cyclictest41-21ksoftirqd/320:29:083
11848993326,5cyclictest41-21ksoftirqd/323:52:173
11847993328,3cyclictest33-21ksoftirqd/221:52:232
11847993327,4cyclictest33-21ksoftirqd/221:44:442
11847993327,4cyclictest33-21ksoftirqd/221:12:392
11847993327,4cyclictest33-21ksoftirqd/219:25:522
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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