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2026-03-09 - 22:53
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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 Mon Mar 09, 2026 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491206171,23phc2sys0-21swapper/307:06:233
70012205172,22sleep10-21swapper/107:09:351
67402201169,21sleep20-21swapper/207:06:112
66642201168,22sleep00-21swapper/007:05:290
1588621500,2sleep0733299cyclictest08:35:140
885921360,2sleep3733599cyclictest07:10:243
7334997715,60cyclictest11551-21kworker/2:208:55:332
7334997714,61cyclictest11329-21kworker/2:212:15:342
139391690,1ptp4l401ktimersoftd/310:24:413
7334996415,47cyclictest11551-21kworker/2:207:40:332
157222580,2sleep30-21swapper/310:50:163
157222580,2sleep30-21swapper/310:50:163
733499574,51cyclictest5470-21kworker/2:111:25:322
139391570,1ptp4l391rcuc/310:10:273
139391550,1ptp4l401ktimersoftd/309:10:003
139391530,8ptp4l401ktimersoftd/312:02:283
139391500,1ptp4l23424-1kworker/3:1H07:52:153
139391420,0ptp4l401ktimersoftd/310:48:443
139391420,0ptp4l401ktimersoftd/310:43:083
139391420,0ptp4l401ktimersoftd/310:39:553
139391420,0ptp4l401ktimersoftd/308:29:403
139391420,0ptp4l401ktimersoftd/308:29:403
733499411,38cyclictest5470-21kworker/2:110:31:332
7333994034,3cyclictest19634-21fschecks_count07:35:161
57898400,3rtkit-daemon577-21rtkit-daemon10:05:201
733499391,18cyclictest20758-1kworker/2:0H11:15:002
7335993731,4cyclictest41-21ksoftirqd/309:49:463
733499372,17cyclictest21361-21latency_hist07:40:012
7334993712,4cyclictest8804-21seq11:40:422
733499370,5cyclictest28453-21cron10:10:002
7333993731,4cyclictest25-21ksoftirqd/110:51:061
7333993731,4cyclictest25-21ksoftirqd/110:51:061
7333993731,4cyclictest25-21ksoftirqd/110:42:271
7332993730,4cyclictest9-21ksoftirqd/008:42:590
7332993729,5cyclictest9-21ksoftirqd/011:59:590
7335993631,3cyclictest41-21ksoftirqd/311:00:583
7335993631,3cyclictest26151-21cron07:50:003
7335993630,4cyclictest41-21ksoftirqd/311:41:473
733499367,27cyclictest0-21swapper/212:05:222
733499364,30cyclictest11551-21kworker/2:208:35:332
7334993630,4cyclictest33-21ksoftirqd/209:50:362
7333993630,4cyclictest25-21ksoftirqd/110:17:351
7333993630,4cyclictest25-21ksoftirqd/108:01:291
7333993630,4cyclictest25-21ksoftirqd/107:27:111
7335993530,3cyclictest41-21ksoftirqd/307:40:013
7335993529,4cyclictest41-21ksoftirqd/312:29:033
7335993529,3cyclictest41-21ksoftirqd/308:45:183
7334993529,4cyclictest33-21ksoftirqd/207:46:302
7334993528,5cyclictest33-21ksoftirqd/210:01:452
7334993511,3cyclictest13022-21turbostat.cron08:30:002
7334993511,3cyclictest13022-21turbostat.cron08:30:002
7333993529,4cyclictest25-21ksoftirqd/111:15:441
7333993529,4cyclictest25-21ksoftirqd/107:22:501
7333993528,4cyclictest2029-21cron09:15:001
7332993529,4cyclictest9-21ksoftirqd/010:03:350
7332993529,4cyclictest9-21ksoftirqd/007:15:400
7332993529,4cyclictest9-21ksoftirqd/007:15:390
139391350,0ptp4l401ktimersoftd/308:17:113
7335993429,3cyclictest41-21ksoftirqd/311:25:203
7335993428,4cyclictest41-21ksoftirqd/309:45:003
7335993428,4cyclictest41-21ksoftirqd/308:35:413
7335993428,4cyclictest41-21ksoftirqd/308:23:453
7335993428,4cyclictest41-21ksoftirqd/307:41:303
7334993428,4cyclictest33-21ksoftirqd/210:57:252
7334993428,4cyclictest33-21ksoftirqd/210:29:252
7334993428,4cyclictest33-21ksoftirqd/209:48:012
7334993428,4cyclictest33-21ksoftirqd/209:41:112
7334993428,4cyclictest33-21ksoftirqd/209:27:032
7334993428,4cyclictest33-21ksoftirqd/208:51:002
7334993428,4cyclictest33-21ksoftirqd/208:11:252
7334993413,2cyclictest7353-21/usr/sbin/munin07:10:172
7333993428,4cyclictest25-21ksoftirqd/111:50:391
7333993428,4cyclictest25-21ksoftirqd/110:12:391
7332993429,3cyclictest9-21ksoftirqd/012:00:110
7332993429,3cyclictest9-21ksoftirqd/008:05:090
7335993328,3cyclictest41-21ksoftirqd/307:32:403
7335993328,3cyclictest29686-21cron09:05:003
7335993327,4cyclictest41-21ksoftirqd/309:17:563
7335993327,4cyclictest41-21ksoftirqd/307:27:013
7335993327,4cyclictest41-21ksoftirqd/307:22:363
7334993328,3cyclictest33-21ksoftirqd/212:11:452
7334993328,3cyclictest33-21ksoftirqd/210:52:162
7334993328,3cyclictest33-21ksoftirqd/210:52:152
7334993327,4cyclictest33-21ksoftirqd/212:29:232
7334993327,4cyclictest33-21ksoftirqd/211:21:042
7334993327,4cyclictest33-21ksoftirqd/211:21:032
7334993327,4cyclictest33-21ksoftirqd/211:16:302
7334993327,4cyclictest33-21ksoftirqd/210:47:012
7334993327,4cyclictest33-21ksoftirqd/209:19:372
7334993327,4cyclictest33-21ksoftirqd/208:49:242
7333993328,3cyclictest25-21ksoftirqd/112:32:021
7333993328,3cyclictest25-21ksoftirqd/111:45:111
7333993327,4cyclictest25-21ksoftirqd/112:26:331
7333993327,4cyclictest25-21ksoftirqd/112:21:391
7333993327,4cyclictest25-21ksoftirqd/110:59:321
7333993327,4cyclictest25-21ksoftirqd/109:55:001
7333993327,4cyclictest25-21ksoftirqd/108:40:401
7333993327,4cyclictest25-21ksoftirqd/107:52:541
7333993327,4cyclictest25-21ksoftirqd/107:33:221
7333993326,4cyclictest25-21ksoftirqd/108:36:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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