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2026-04-17 - 18:03
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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 17, 2026 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491228165,51phc2sys0-21swapper/307:08:583
75852201168,22sleep20-21swapper/207:09:362
75022201168,22sleep10-21swapper/107:08:311
75782196163,22sleep00-21swapper/007:09:300
139391870,2ptp4l18080-21iostat_ios07:30:173
45032650,6sleep3791199cyclictest09:15:253
105302570,1sleep20-21swapper/210:35:232
277192540,4sleep30-21swapper/311:12:143
203582520,3sleep3791199cyclictest07:35:163
16032450,34sleep233-21ksoftirqd/208:04:562
139391440,0ptp4l401ktimersoftd/311:40:353
139391440,0ptp4l401ktimersoftd/309:10:173
7910994336,4cyclictest5174-21cron11:35:012
57898430,8rtkit-daemon0-21swapper/111:18:311
139391430,0ptp4l401ktimersoftd/310:44:023
139391420,1ptp4l391rcuc/311:30:183
139391420,0ptp4l401ktimersoftd/312:15:143
139391420,0ptp4l401ktimersoftd/310:17:083
139391420,0ptp4l401ktimersoftd/308:15:173
7909994135,4cyclictest28985-21cron12:25:001
7909994134,3cyclictest25-21ksoftirqd/111:00:001
790899411,38cyclictest21861-21cron12:10:000
57898410,1rtkit-daemon0-21swapper/109:48:431
7908994035,3cyclictest2806-21cron11:30:000
57898400,2rtkit-daemon0-21swapper/012:02:500
7909993934,3cyclictest25-21ksoftirqd/111:54:591
7909993934,3cyclictest25-21ksoftirqd/110:10:001
139391390,0ptp4l401ktimersoftd/310:10:153
7909993833,3cyclictest25-21ksoftirqd/112:20:001
7909993832,3cyclictest25-21ksoftirqd/110:15:011
7908993827,9cyclictest9-21ksoftirqd/011:02:500
7911993726,9cyclictest41-21ksoftirqd/312:02:463
7910993730,4cyclictest33-21ksoftirqd/212:00:092
7909993733,2cyclictest25-21ksoftirqd/108:39:591
7909993733,2cyclictest25-21ksoftirqd/107:55:011
7909993732,3cyclictest25-21ksoftirqd/109:40:001
7909993731,4cyclictest25-21ksoftirqd/110:19:381
7908993733,3cyclictest9-21ksoftirqd/012:15:000
7908993732,3cyclictest9-21ksoftirqd/010:20:000
7911993630,4cyclictest41-21ksoftirqd/309:41:593
791199361,32cyclictest17187-21cron07:29:593
7910993630,4cyclictest33-21ksoftirqd/212:19:012
7910993630,4cyclictest33-21ksoftirqd/209:00:112
7910993630,4cyclictest33-21ksoftirqd/207:56:372
7910993629,4cyclictest33-21ksoftirqd/207:48:062
7909993631,3cyclictest25-21ksoftirqd/112:05:181
7909993631,3cyclictest25-21ksoftirqd/111:05:001
7909993631,3cyclictest25-21ksoftirqd/110:33:571
7909993631,3cyclictest25-21ksoftirqd/110:25:001
7909993631,3cyclictest25-21ksoftirqd/109:05:181
7909993631,3cyclictest25-21ksoftirqd/109:05:011
7909993630,4cyclictest25-21ksoftirqd/111:39:321
7909993630,4cyclictest25-21ksoftirqd/111:39:321
7909993630,4cyclictest25-21ksoftirqd/110:36:171
7909993630,4cyclictest25-21ksoftirqd/109:54:301
7909993630,3cyclictest25-21ksoftirqd/108:15:011
7909993629,4cyclictest25-21ksoftirqd/111:35:001
7908993630,4cyclictest9-21ksoftirqd/007:53:540
7911993530,3cyclictest41-21ksoftirqd/311:09:063
7911993530,3cyclictest41-21ksoftirqd/311:09:063
7911993530,3cyclictest41-21ksoftirqd/310:29:593
7911993530,3cyclictest41-21ksoftirqd/307:41:553
7910993530,3cyclictest33-21ksoftirqd/207:41:552
7910993529,4cyclictest33-21ksoftirqd/210:43:452
7910993529,4cyclictest33-21ksoftirqd/210:23:072
7910993529,3cyclictest33-21ksoftirqd/208:20:102
7909993530,3cyclictest25-21ksoftirqd/112:25:191
7909993530,3cyclictest25-21ksoftirqd/112:05:011
7909993530,3cyclictest25-21ksoftirqd/108:30:141
7909993529,4cyclictest25-21ksoftirqd/111:46:181
7909993529,4cyclictest25-21ksoftirqd/111:22:151
7909993529,4cyclictest25-21ksoftirqd/108:50:481
7909993529,3cyclictest25-21ksoftirqd/110:50:011
7908993530,3cyclictest9-21ksoftirqd/009:40:010
7908993529,4cyclictest9-21ksoftirqd/011:51:070
7908993529,4cyclictest9-21ksoftirqd/010:47:120
7911993429,3cyclictest41-21ksoftirqd/308:50:003
7911993429,3cyclictest41-21ksoftirqd/308:23:363
7911993427,4cyclictest41-21ksoftirqd/309:52:203
7910993428,4cyclictest33-21ksoftirqd/211:23:132
7910993428,4cyclictest33-21ksoftirqd/210:18:572
7910993428,4cyclictest33-21ksoftirqd/208:39:422
7910993428,4cyclictest33-21ksoftirqd/208:13:142
7910993427,5cyclictest33-21ksoftirqd/210:49:222
7909993430,2cyclictest25-21ksoftirqd/109:15:191
7909993429,4cyclictest25-21ksoftirqd/109:58:531
7909993429,3cyclictest25-21ksoftirqd/112:40:021
7909993428,4cyclictest25-21ksoftirqd/111:09:271
7909993428,4cyclictest25-21ksoftirqd/111:09:271
7909993428,4cyclictest25-21ksoftirqd/108:48:431
7909993428,3cyclictest25-21ksoftirqd/110:50:121
7909993427,4cyclictest25-21ksoftirqd/109:28:031
7909993427,4cyclictest25-21ksoftirqd/109:28:021
7909993423,9cyclictest25-21ksoftirqd/107:55:191
7908993429,3cyclictest9-21ksoftirqd/007:35:180
7908993429,3cyclictest9-21ksoftirqd/007:31:520
7908993428,4cyclictest9-21ksoftirqd/008:39:000
7908993428,4cyclictest9-21ksoftirqd/007:14:020
7908993427,5cyclictest9-21ksoftirqd/011:35:010
7908993427,4cyclictest9-21ksoftirqd/009:05:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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