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2026-04-03 - 22:19
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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 Fri Apr 03, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74672204170,23sleep10-21swapper/107:06:351
139491204169,23phc2sys0-21swapper/307:09:523
76872203169,23sleep00-21swapper/007:09:190
75302202169,22sleep20-21swapper/207:07:242
77422163124,13sleep20-21swapper/207:10:012
895521560,5sleep3803699cyclictest11:40:193
2514521400,7sleep1803499cyclictest08:50:241
139391710,1ptp4l29360-21apt-get10:10:013
134491610,1getstats15522-1kworker/3:1H11:10:213
21572570,2sleep30-21swapper/309:10:243
44792490,2sleep20-21swapper/210:25:002
803599462,40cyclictest9663-21tr08:20:182
8036994414,29cyclictest19229-21kworker/3:011:51:033
803399442,39cyclictest27644-21fschecks_count10:05:170
139391440,0ptp4l401ktimersoftd/309:39:553
139391430,0ptp4l401ktimersoftd/311:23:153
139391430,0ptp4l401ktimersoftd/309:43:383
139391420,0ptp4l401ktimersoftd/307:39:193
8036994134,4cyclictest14957-21sh07:25:003
8034994135,3cyclictest11128-21cron08:24:591
8034994130,10cyclictest25-21ksoftirqd/112:10:261
139391410,0ptp4l401ktimersoftd/310:31:243
139391410,0ptp4l401ktimersoftd/309:50:153
139391410,0ptp4l401ktimersoftd/309:19:463
8033994035,3cyclictest15109-21cron09:40:010
57898400,8rtkit-daemon0-21swapper/012:12:320
8035993933,3cyclictest930-21latency_hist11:25:002
8036993832,3cyclictest41-21ksoftirqd/310:05:283
8035993826,11cyclictest33-21ksoftirqd/210:30:002
8034993831,4cyclictest25-21ksoftirqd/109:13:591
139391380,0ptp4l401ktimersoftd/310:49:583
8035993732,2cyclictest33-21ksoftirqd/208:00:202
8034993732,3cyclictest25-21ksoftirqd/112:05:011
8034993731,4cyclictest25-21ksoftirqd/108:43:061
8034993730,4cyclictest25-21ksoftirqd/111:26:131
8033993731,3cyclictest9-21ksoftirqd/012:09:340
8036993630,4cyclictest41-21ksoftirqd/308:13:233
8035993631,3cyclictest33-21ksoftirqd/209:49:062
8035993629,4cyclictest33-21ksoftirqd/209:58:202
8034993631,3cyclictest25-21ksoftirqd/111:34:291
8034993630,4cyclictest25-21ksoftirqd/109:16:561
8034993630,3cyclictest25-21ksoftirqd/107:30:091
8034993629,5cyclictest25-21ksoftirqd/108:46:031
8033993630,4cyclictest9-21ksoftirqd/007:30:090
8033993629,4cyclictest9-21ksoftirqd/011:47:470
8033993629,4cyclictest9-21ksoftirqd/008:45:090
8036993529,4cyclictest41-21ksoftirqd/309:22:513
8035993530,3cyclictest33-21ksoftirqd/212:02:422
8035993530,3cyclictest33-21ksoftirqd/211:35:112
8035993529,4cyclictest33-21ksoftirqd/207:49:542
8035993529,3cyclictest33-21ksoftirqd/211:55:102
8035993529,3cyclictest33-21ksoftirqd/210:39:212
8035993528,4cyclictest33-21ksoftirqd/211:05:182
8034993530,3cyclictest25-21ksoftirqd/109:36:051
8034993530,3cyclictest25-21ksoftirqd/107:20:001
8034993529,4cyclictest25-21ksoftirqd/107:54:401
8034993529,4cyclictest25-21ksoftirqd/107:47:301
8034993529,4cyclictest22229-21cron09:55:011
8034993528,4cyclictest25-21ksoftirqd/109:47:561
8034993528,4cyclictest25-21ksoftirqd/108:58:431
8034993528,4cyclictest25-21ksoftirqd/108:18:341
8034993528,4cyclictest25-21ksoftirqd/107:59:461
8034993528,4cyclictest25-21ksoftirqd/107:14:331
8033993530,3cyclictest9-21ksoftirqd/012:30:460
8033993530,3cyclictest9-21ksoftirqd/012:30:460
8033993529,4cyclictest9-21ksoftirqd/007:59:530
8033993528,4cyclictest9-21ksoftirqd/011:14:570
57898350,2rtkit-daemon0-21swapper/109:05:281
139391350,29ptp4l41-21ksoftirqd/307:55:113
8036993428,4cyclictest41-21ksoftirqd/311:49:413
8036993428,4cyclictest41-21ksoftirqd/307:40:543
8036993427,4cyclictest41-21ksoftirqd/311:36:423
8035993429,3cyclictest33-21ksoftirqd/210:50:402
8035993429,3cyclictest33-21ksoftirqd/209:35:002
8035993429,3cyclictest33-21ksoftirqd/207:35:122
8035993428,4cyclictest33-21ksoftirqd/208:31:522
8035993428,4cyclictest33-21ksoftirqd/207:53:092
8035993427,4cyclictest33-21ksoftirqd/210:43:302
8035993427,4cyclictest33-21ksoftirqd/208:11:182
8035993420,11cyclictest33-21ksoftirqd/211:14:482
8034993429,3cyclictest25-21ksoftirqd/110:10:001
8034993429,3cyclictest25-21ksoftirqd/108:07:471
8034993428,4cyclictest25-21ksoftirqd/109:45:001
8034993428,4cyclictest25-21ksoftirqd/109:33:161
8034993428,4cyclictest25-21ksoftirqd/109:27:261
8034993428,4cyclictest25-21ksoftirqd/108:11:281
8034993428,3cyclictest20893-21fschecks_count12:05:201
8034993427,4cyclictest25-21ksoftirqd/107:36:471
8033993428,4cyclictest9-21ksoftirqd/012:16:460
8033993428,4cyclictest9-21ksoftirqd/011:42:250
8033993428,4cyclictest9-21ksoftirqd/011:16:410
8033993428,4cyclictest9-21ksoftirqd/010:33:440
8033993428,4cyclictest9-21ksoftirqd/010:25:170
8033993428,4cyclictest9-21ksoftirqd/007:18:570
8033993427,4cyclictest9-21ksoftirqd/009:50:010
8033993425,6cyclictest9-21ksoftirqd/010:39:110
1078023429,2sleep125-21ksoftirqd/111:45:111
8036993328,3cyclictest41-21ksoftirqd/307:11:543
8036993327,4cyclictest41-21ksoftirqd/311:56:243
8036993327,4cyclictest41-21ksoftirqd/311:17:363
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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