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2026-04-23 - 20:17
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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 Thu Apr 23, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
234902202167,23sleep30-21swapper/307:08:143
233382201168,22sleep10-21swapper/107:06:151
233372200166,22sleep00-21swapper/007:06:130
234062199167,21sleep20-21swapper/207:07:082
178552750,32sleep125-21ksoftirqd/112:20:181
18032570,1sleep10-21swapper/108:35:121
44902560,7sleep02392099cyclictest11:55:130
2392299521,48cyclictest0-21swapper/207:30:242
2392299521,48cyclictest0-21swapper/207:30:242
159422520,3sleep22392299cyclictest11:10:252
2392299500,48cyclictest0-21swapper/212:00:442
135191460,2getstats0-21swapper/309:45:173
296342450,2sleep20-21swapper/209:30:172
296342450,2sleep20-21swapper/209:30:172
50798440,9rtkit-daemon0-21swapper/108:03:221
50798440,9rtkit-daemon0-21swapper/108:03:211
23920994327,13cyclictest9-21ksoftirqd/008:25:100
138491420,0ptp4l401ktimersoftd/308:28:183
23923994124,14cyclictest41-21ksoftirqd/312:10:013
138491410,16ptp4l401ktimersoftd/310:35:263
138491410,0ptp4l401ktimersoftd/308:00:253
138491410,0ptp4l401ktimersoftd/308:00:253
23923994034,3cyclictest420-21rs:main3
23922993732,3cyclictest33-21ksoftirqd/209:05:012
23922993732,3cyclictest33-21ksoftirqd/209:05:002
23922993731,4cyclictest33-21ksoftirqd/210:46:262
23922993730,4cyclictest33-21ksoftirqd/208:10:302
23921993731,4cyclictest25-21ksoftirqd/112:34:171
23921993731,4cyclictest25-21ksoftirqd/109:21:541
23921993730,4cyclictest25-21ksoftirqd/109:02:581
23921993730,4cyclictest25-21ksoftirqd/109:02:581
23920993731,4cyclictest9-21ksoftirqd/009:17:230
138491370,0ptp4l401ktimersoftd/309:00:503
138491370,0ptp4l401ktimersoftd/309:00:503
50798360,2rtkit-daemon0-21swapper/108:50:271
23923993631,3cyclictest41-21ksoftirqd/311:56:173
23923993630,4cyclictest41-21ksoftirqd/311:07:473
23923993630,4cyclictest41-21ksoftirqd/310:57:483
23923993630,4cyclictest41-21ksoftirqd/308:35:543
23923993614,3cyclictest1462-21/usr/sbin/munin09:40:183
23922993630,4cyclictest499-21systemctl11:45:252
23922993630,4cyclictest33-21ksoftirqd/211:22:102
23922993630,4cyclictest33-21ksoftirqd/211:00:392
23922993630,4cyclictest33-21ksoftirqd/209:29:142
23922993630,4cyclictest33-21ksoftirqd/207:45:422
23921993631,3cyclictest25-21ksoftirqd/111:40:011
23921993631,3cyclictest25-21ksoftirqd/108:30:181
23921993631,3cyclictest25-21ksoftirqd/108:30:181
23921993630,4cyclictest25-21ksoftirqd/107:54:591
23921993630,4cyclictest25-21ksoftirqd/107:46:061
23920993631,3cyclictest9-21ksoftirqd/011:19:250
23920993630,4cyclictest9-21ksoftirqd/010:24:150
23920993630,4cyclictest9-21ksoftirqd/009:59:490
23923993530,3cyclictest28450-21sshd11:36:163
23923993529,4cyclictest41-21ksoftirqd/311:22:153
23923993529,4cyclictest41-21ksoftirqd/310:21:133
23923993529,4cyclictest41-21ksoftirqd/309:21:443
23923993529,4cyclictest41-21ksoftirqd/309:17:263
23923993529,4cyclictest41-21ksoftirqd/307:35:423
23923993529,4cyclictest41-21ksoftirqd/307:29:153
23923993513,3cyclictest9181-21/usr/sbin/munin08:50:223
2392399351,2cyclictest9265-21apt-get11:00:103
2392399351,2cyclictest0-21swapper/312:10:123
23923993512,3cyclictest28876-21/usr/sbin/munin07:20:153
23922993530,3cyclictest33-21ksoftirqd/212:14:052
23922993530,3cyclictest33-21ksoftirqd/210:22:452
23922993529,4cyclictest33-21ksoftirqd/211:29:032
23922993529,4cyclictest33-21ksoftirqd/210:09:162
23922993529,4cyclictest33-21ksoftirqd/208:38:382
23922993529,4cyclictest33-21ksoftirqd/208:32:042
23922993529,4cyclictest33-21ksoftirqd/208:32:042
23922993529,4cyclictest33-21ksoftirqd/207:17:422
23922993515,3cyclictest1355-21idleruntime-cro10:45:002
23921993530,3cyclictest25-21ksoftirqd/111:28:241
23921993529,4cyclictest25-21ksoftirqd/110:02:501
23921993529,4cyclictest25-21ksoftirqd/107:18:381
23921993528,5cyclictest25-21ksoftirqd/107:45:011
23920993529,4cyclictest9-21ksoftirqd/012:38:420
23920993529,4cyclictest9-21ksoftirqd/009:46:360
1385913529,3phc2sys41-21ksoftirqd/311:45:183
23923993428,4cyclictest41-21ksoftirqd/312:29:013
23923993428,4cyclictest41-21ksoftirqd/310:26:023
23923993428,4cyclictest41-21ksoftirqd/310:04:043
23923993428,4cyclictest41-21ksoftirqd/309:07:563
23923993428,4cyclictest41-21ksoftirqd/307:14:513
23923993413,2cyclictest1212-21latency_hist09:40:013
23923993412,4cyclictest1319-21snmpd07:17:333
23923993412,2cyclictest16540-21/usr/sbin/munin10:10:213
23923993411,3cyclictest26885-21expr08:20:133
23923993410,4cyclictest22126-21sort11:25:153
23922993429,3cyclictest33-21ksoftirqd/212:25:002
23922993429,3cyclictest33-21ksoftirqd/209:46:182
23922993428,4cyclictest33-21ksoftirqd/211:59:132
23922993428,4cyclictest33-21ksoftirqd/210:31:472
23922993428,4cyclictest33-21ksoftirqd/210:04:272
23922993428,4cyclictest33-21ksoftirqd/207:36:362
23921993429,3cyclictest25-21ksoftirqd/110:25:101
23921993429,3cyclictest25-21ksoftirqd/109:10:001
23921993429,3cyclictest25-21ksoftirqd/108:18:431
23921993428,4cyclictest25-21ksoftirqd/112:14:481
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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