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2026-03-29 - 00:26
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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 Sat Mar 28, 2026 12:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
164222206172,22sleep20-21swapper/207:08:162
139491206171,23phc2sys0-21swapper/307:07:153
162782203170,22sleep00-21swapper/007:06:210
163712201168,22sleep10-21swapper/107:07:351
2901121610,2sleep30-21swapper/309:50:123
190121590,2sleep30-21swapper/311:05:253
136832630,4sleep31699899cyclictest10:25:133
223702620,4sleep022373-21unixbench_multi08:25:240
16996996212,23cyclictest21595-21latency_hist09:35:002
26722570,6sleep21699699cyclictest07:45:192
1699699571,33cyclictest32302-21latency_hist08:50:012
112482570,1sleep00-21swapper/011:25:190
139391560,1ptp4l401ktimersoftd/311:11:513
16998994539,4cyclictest19606-21cron11:45:003
16995994539,3cyclictest30002-21irqrtprio12:05:181
139391440,0ptp4l401ktimersoftd/308:19:063
16996994329,12cyclictest5295-21cron11:15:002
1699599437,4cyclictest25-21ksoftirqd/111:20:001
139391430,0ptp4l401ktimersoftd/311:46:463
134391430,6getstats1699899cyclictest08:09:003
16995994238,2cyclictest25-21ksoftirqd/107:59:591
139391420,0ptp4l401ktimersoftd/309:30:193
139391420,0ptp4l401ktimersoftd/307:38:473
134391410,2getstats0-21swapper/308:14:003
134391410,2getstats0-21swapper/308:13:593
1699599404,9cyclictest25-21ksoftirqd/108:25:161
139391400,0ptp4l401ktimersoftd/308:29:293
16998993933,3cyclictest41-21ksoftirqd/312:10:003
1699599396,3cyclictest25-21ksoftirqd/107:35:011
16995993936,2cyclictest25-21ksoftirqd/110:25:011
139391390,1ptp4l401ktimersoftd/307:24:163
16996993812,23cyclictest31275-21date09:55:002
1699599385,2cyclictest121rcu_preempt09:50:001
16995993834,2cyclictest25-21ksoftirqd/109:35:111
16995993832,3cyclictest25-21ksoftirqd/108:35:001
16994993832,4cyclictest9-21ksoftirqd/011:10:010
16998993732,3cyclictest41-21ksoftirqd/309:45:003
16998993732,3cyclictest41-21ksoftirqd/308:40:003
16998993725,10cyclictest41-21ksoftirqd/309:05:153
16996993731,4cyclictest33-21ksoftirqd/209:05:582
1699599375,4cyclictest25-21ksoftirqd/110:10:001
16995993732,3cyclictest25-21ksoftirqd/111:45:311
16995993732,3cyclictest25-21ksoftirqd/108:20:001
16995993732,3cyclictest25-21ksoftirqd/107:55:001
1699599372,3cyclictest25-21ksoftirqd/107:45:211
16998993632,2cyclictest41-21ksoftirqd/308:50:003
16998993631,3cyclictest41-21ksoftirqd/312:20:273
16998993631,3cyclictest41-21ksoftirqd/312:00:013
16998993631,3cyclictest41-21ksoftirqd/309:24:593
16998993631,3cyclictest41-21ksoftirqd/307:19:593
16998993631,2cyclictest41-21ksoftirqd/309:05:013
16998993630,4cyclictest41-21ksoftirqd/307:41:103
16996993630,4cyclictest33-21ksoftirqd/211:58:232
16996993619,15cyclictest33-21ksoftirqd/210:50:002
1699699360,33cyclictest2852-21latency_hist11:10:012
16995993632,3cyclictest25-21ksoftirqd/109:05:281
16995993632,2cyclictest25-21ksoftirqd/110:40:141
16995993631,3cyclictest25-21ksoftirqd/110:30:011
16995993631,3cyclictest25-21ksoftirqd/110:05:001
16995993631,3cyclictest25-21ksoftirqd/109:55:001
16995993631,3cyclictest25-21ksoftirqd/108:50:001
16995993631,3cyclictest25-21ksoftirqd/108:08:361
1699599362,3cyclictest25-21ksoftirqd/107:40:221
16994993630,3cyclictest19604-21cron11:45:000
139391360,0ptp4l401ktimersoftd/310:00:113
16998993531,2cyclictest41-21ksoftirqd/309:19:593
16998993530,3cyclictest41-21ksoftirqd/310:10:133
16998993530,3cyclictest41-21ksoftirqd/308:00:003
16998993530,2cyclictest41-21ksoftirqd/311:00:013
16998993529,3cyclictest41-21ksoftirqd/311:55:003
16998993529,3cyclictest41-21ksoftirqd/310:25:013
16998993527,4cyclictest41-21ksoftirqd/311:00:043
1699899350,3cyclictest121rcu_preempt12:25:163
16996993529,4cyclictest33-21ksoftirqd/211:30:032
16996993529,4cyclictest33-21ksoftirqd/210:36:482
1699699351,3cyclictest10798-21cron10:20:002
1699699350,33cyclictest0-21swapper/212:15:002
1699599356,3cyclictest25-21ksoftirqd/112:02:111
1699599354,3cyclictest25-21ksoftirqd/112:15:151
16995993531,3cyclictest25-21ksoftirqd/111:40:251
16995993531,3cyclictest25-21ksoftirqd/111:20:261
16995993531,2cyclictest25-21ksoftirqd/111:50:121
16995993530,3cyclictest25-21ksoftirqd/110:35:001
16995993530,3cyclictest25-21ksoftirqd/109:20:201
16995993530,2cyclictest25-21ksoftirqd/112:25:131
16995993529,4cyclictest25-21ksoftirqd/109:40:221
16995993529,4cyclictest25-21ksoftirqd/107:39:281
16995993529,3cyclictest5008-21irqrtprio12:20:201
16995993529,3cyclictest25-21ksoftirqd/110:35:261
16995993528,5cyclictest25-21ksoftirqd/108:12:541
16995993528,5cyclictest25-21ksoftirqd/108:12:541
1699599352,4cyclictest25-21ksoftirqd/109:25:211
1699599352,2cyclictest25-21ksoftirqd/109:15:141
16994993529,4cyclictest9-21ksoftirqd/009:15:390
16998993430,3cyclictest41-21ksoftirqd/310:20:013
16998993430,2cyclictest41-21ksoftirqd/310:55:023
16998993430,2cyclictest41-21ksoftirqd/310:35:003
16998993430,2cyclictest41-21ksoftirqd/308:35:003
16998993429,3cyclictest41-21ksoftirqd/312:18:023
16998993429,3cyclictest41-21ksoftirqd/312:00:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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