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2026-05-24 - 22:37
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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 rackdslot4.osadl.org (updated Sun May 24, 2026 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
182242206172,22sleep00-21swapper/007:09:310
182242206172,22sleep00-21swapper/007:09:310
180632204171,22sleep20-21swapper/207:07:332
180632204171,22sleep20-21swapper/207:07:332
180592203169,22sleep30-21swapper/307:07:303
180592203169,22sleep30-21swapper/307:07:303
182302201168,22sleep10-21swapper/107:09:381
182302201168,22sleep10-21swapper/107:09:381
1733521390,4sleep11855499cyclictest12:30:211
1855599680,30cyclictest1646-21cat08:45:012
1855599680,30cyclictest1646-21cat08:45:002
1855599680,21cyclictest1-21systemd10:45:252
1855599651,21cyclictest17853-21ptp4l08:10:232
1855599640,25cyclictest24671-21/usr/sbin/munin07:20:202
1855599640,23cyclictest10278-21cat09:00:212
1855599631,19cyclictest0-21swapper/207:40:232
1855599620,22cyclictest30754-21awk09:40:262
138491620,1ptp4l401ktimersoftd/307:22:053
1855599580,21cyclictest223-21systemd-journal10:33:222
138491570,1ptp4l401ktimersoftd/308:50:103
138491560,1ptp4l401ktimersoftd/308:38:573
326272550,4sleep31855699cyclictest10:50:223
1855599551,19cyclictest0-21swapper/212:10:252
138491550,1ptp4l401ktimersoftd/308:45:333
59452510,2sleep20-21swapper/212:09:592
218492450,1sleep00-21swapper/010:30:120
138491440,1ptp4l26905-21diskstats10:40:143
138491430,0ptp4l401ktimersoftd/310:28:183
1855599420,31cyclictest19182-21awk11:30:162
138491420,0ptp4l401ktimersoftd/312:11:173
1855599416,22cyclictest30503-21grep07:30:262
18555994127,11cyclictest33-21ksoftirqd/210:09:072
1855599411,23cyclictest6577-21ls10:00:122
1855599410,25cyclictest25577-21wc09:30:242
1855599410,25cyclictest21233-21tr07:15:122
138491410,0ptp4l401ktimersoftd/307:35:043
1855599400,24cyclictest17114-21cut10:20:182
138491400,1ptp4l401ktimersoftd/307:40:483
138491400,15ptp4l401ktimersoftd/308:00:123
138491400,0ptp4l401ktimersoftd/310:15:183
138491400,0ptp4l401ktimersoftd/309:20:123
18556993924,12cyclictest41-21ksoftirqd/312:35:013
18554993933,3cyclictest25-21ksoftirqd/110:40:121
18555993832,4cyclictest33-21ksoftirqd/210:15:272
18556993730,4cyclictest41-21ksoftirqd/311:48:593
1855599370,22cyclictest3168-21sed09:50:252
138491370,0ptp4l401ktimersoftd/308:10:253
18556993630,4cyclictest41-21ksoftirqd/310:57:003
18556993630,4cyclictest41-21ksoftirqd/310:30:403
18556993630,4cyclictest41-21ksoftirqd/307:32:533
18555993630,4cyclictest33-21ksoftirqd/211:45:372
18555993630,4cyclictest33-21ksoftirqd/208:58:552
18554993631,3cyclictest25-21ksoftirqd/108:35:001
18554993630,4cyclictest25-21ksoftirqd/107:18:541
18554993629,5cyclictest25-21ksoftirqd/112:19:381
18554993629,5cyclictest25-21ksoftirqd/112:19:371
18553993631,3cyclictest9-21ksoftirqd/011:45:120
18553993630,4cyclictest9-21ksoftirqd/007:50:320
18553993629,4cyclictest9-21ksoftirqd/007:57:210
18556993529,4cyclictest41-21ksoftirqd/311:28:453
18556993529,4cyclictest41-21ksoftirqd/308:06:383
18556993529,3cyclictest41-21ksoftirqd/312:29:373
18556993528,4cyclictest41-21ksoftirqd/308:41:203
18556993528,4cyclictest41-21ksoftirqd/308:41:203
18556993528,4cyclictest41-21ksoftirqd/308:31:343
18556993528,4cyclictest41-21ksoftirqd/307:18:083
18555993530,3cyclictest33-21ksoftirqd/209:57:172
18554993529,4cyclictest25-21ksoftirqd/111:01:271
18554993529,4cyclictest25-21ksoftirqd/110:09:241
18554993529,4cyclictest25-21ksoftirqd/108:47:281
18554993529,4cyclictest25-21ksoftirqd/108:21:211
18554993529,4cyclictest25-21ksoftirqd/107:57:131
18554993527,5cyclictest25-21ksoftirqd/108:50:061
18553993529,4cyclictest9-21ksoftirqd/009:07:450
18553993527,6cyclictest9-21ksoftirqd/012:35:010
138491350,33ptp4l41-21ksoftirqd/308:15:143
18556993429,3cyclictest41-21ksoftirqd/311:41:183
18556993429,3cyclictest41-21ksoftirqd/307:48:403
18556993428,4cyclictest41-21ksoftirqd/312:36:453
18556993428,4cyclictest41-21ksoftirqd/311:16:583
18556993427,4cyclictest41-21ksoftirqd/311:31:543
18556993427,4cyclictest41-21ksoftirqd/310:05:533
18556993427,4cyclictest41-21ksoftirqd/309:15:063
18555993428,4cyclictest33-21ksoftirqd/211:16:292
18555993428,4cyclictest33-21ksoftirqd/209:22:112
18555993428,4cyclictest33-21ksoftirqd/208:01:042
18555993428,4cyclictest33-21ksoftirqd/207:11:252
18554993429,3cyclictest25-21ksoftirqd/111:35:251
18554993429,3cyclictest25-21ksoftirqd/109:15:111
18554993429,3cyclictest25-21ksoftirqd/107:35:281
18554993428,4cyclictest25-21ksoftirqd/111:06:051
18554993428,4cyclictest25-21ksoftirqd/108:29:481
18553993429,3cyclictest9-21ksoftirqd/008:21:280
18553993428,4cyclictest9-21ksoftirqd/012:20:290
18553993428,4cyclictest9-21ksoftirqd/011:11:290
18553993428,4cyclictest9-21ksoftirqd/010:59:420
18553993428,4cyclictest9-21ksoftirqd/010:06:260
18553993427,5cyclictest9-21ksoftirqd/008:45:470
18553993426,6cyclictest9-21ksoftirqd/009:00:590
18553993426,5cyclictest9-21ksoftirqd/008:45:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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