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2026-04-07 - 19:08
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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 Tue Apr 07, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491203169,22phc2sys0-21swapper/307:07:363
164962201168,22sleep10-21swapper/107:06:511
164922200166,23sleep20-21swapper/207:06:492
167022198165,22sleep00-21swapper/007:09:280
1393911250,1ptp4l20638-21/usr/sbin/munin08:25:253
17039996633,4cyclictest33-21ksoftirqd/207:40:002
17039996329,4cyclictest33-21ksoftirqd/211:25:192
17039996229,4cyclictest33-21ksoftirqd/209:45:192
17039996228,11cyclictest33-21ksoftirqd/210:05:262
17039996128,4cyclictest33-21ksoftirqd/209:40:132
17039996127,11cyclictest33-21ksoftirqd/209:35:142
17039996123,11cyclictest33-21ksoftirqd/211:20:182
17039996030,5cyclictest33-21ksoftirqd/212:20:242
17039996029,4cyclictest33-21ksoftirqd/209:15:262
17039996028,4cyclictest33-21ksoftirqd/207:50:132
17039996027,6cyclictest33-21ksoftirqd/212:10:252
17039996027,3cyclictest33-21ksoftirqd/208:25:172
17039996024,4cyclictest33-21ksoftirqd/208:55:132
17039996024,10cyclictest33-21ksoftirqd/212:35:152
17039995930,3cyclictest33-21ksoftirqd/208:15:272
17039995929,3cyclictest33-21ksoftirqd/210:25:122
17039995928,4cyclictest33-21ksoftirqd/210:55:272
17039995928,4cyclictest33-21ksoftirqd/208:45:152
17039995921,10cyclictest33-21ksoftirqd/209:50:142
17039995829,3cyclictest33-21ksoftirqd/211:35:232
17039995827,4cyclictest33-21ksoftirqd/210:20:172
17039995826,6cyclictest33-21ksoftirqd/208:50:192
17039995825,6cyclictest33-21ksoftirqd/207:20:252
17039995824,5cyclictest33-21ksoftirqd/210:30:012
17039995822,4cyclictest33-21ksoftirqd/208:35:272
17039995726,4cyclictest33-21ksoftirqd/210:45:152
17039995724,4cyclictest33-21ksoftirqd/210:00:132
17039995723,10cyclictest33-21ksoftirqd/211:55:142
17039995722,3cyclictest33-21ksoftirqd/209:55:182
17039995627,4cyclictest33-21ksoftirqd/208:40:222
17039995626,6cyclictest33-21ksoftirqd/208:00:172
17039995624,5cyclictest33-21ksoftirqd/207:15:182
17039995624,3cyclictest33-21ksoftirqd/211:30:162
17039995624,10cyclictest33-21ksoftirqd/211:50:262
17039995619,10cyclictest33-21ksoftirqd/212:15:172
17039995618,4cyclictest33-21ksoftirqd/209:07:232
17039995526,3cyclictest33-21ksoftirqd/209:00:132
17039995523,6cyclictest33-21ksoftirqd/208:30:142
17039995523,4cyclictest33-21ksoftirqd/209:30:232
17039995519,10cyclictest33-21ksoftirqd/207:25:162
17039995422,6cyclictest33-21ksoftirqd/207:45:142
17039995412,3cyclictest33-21ksoftirqd/212:30:182
1703999525,6cyclictest33-21ksoftirqd/209:25:152
17039995224,6cyclictest33-21ksoftirqd/209:10:162
17039995224,3cyclictest33-21ksoftirqd/207:30:242
1703999516,7cyclictest33-21ksoftirqd/211:40:162
1703999516,6cyclictest33-21ksoftirqd/207:40:132
17039995120,5cyclictest33-21ksoftirqd/208:05:152
139391510,1ptp4l401ktimersoftd/307:31:043
61012500,1sleep16104-21grep11:15:221
1703999505,6cyclictest33-21ksoftirqd/212:05:232
1703999505,6cyclictest33-21ksoftirqd/211:05:182
1703999501,9cyclictest33-21ksoftirqd/211:15:192
17037995019,4cyclictest9-21ksoftirqd/012:15:010
234782490,1sleep10-21swapper/108:30:141
1703999496,7cyclictest33-21ksoftirqd/207:55:142
1703999494,6cyclictest33-21ksoftirqd/207:10:232
1703999492,9cyclictest33-21ksoftirqd/210:15:142
1703999491,8cyclictest33-21ksoftirqd/210:10:162
17039994917,4cyclictest33-21ksoftirqd/208:10:132
1703999484,5cyclictest33-21ksoftirqd/211:45:162
17039994829,10cyclictest33-21ksoftirqd/208:20:152
1703999481,9cyclictest33-21ksoftirqd/211:10:102
1703999476,3cyclictest33-21ksoftirqd/212:25:172
1703999475,9cyclictest33-21ksoftirqd/212:05:002
17039994712,4cyclictest33-21ksoftirqd/210:35:132
1703999463,8cyclictest33-21ksoftirqd/210:40:222
1703999462,8cyclictest33-21ksoftirqd/210:54:402
1703999461,7cyclictest33-21ksoftirqd/211:00:212
1703999450,6cyclictest33-21ksoftirqd/209:20:112
17037994528,5cyclictest9-21ksoftirqd/012:10:010
1703799445,3cyclictest9-21ksoftirqd/010:10:130
17037994410,3cyclictest9-21ksoftirqd/009:40:000
139391440,0ptp4l401ktimersoftd/308:34:383
17037994311,7cyclictest9-21ksoftirqd/011:20:010
1703799426,6cyclictest9-21ksoftirqd/010:35:200
1703799424,3cyclictest9-21ksoftirqd/011:45:160
17037994213,10cyclictest9-21ksoftirqd/009:30:000
1703799421,2cyclictest121rcu_preempt07:40:250
139391420,3ptp4l401ktimersoftd/310:25:363
139391420,34ptp4l0-21swapper/307:10:013
17040994135,3cyclictest15581-21cron08:15:003
1703799418,4cyclictest9-21ksoftirqd/010:10:000
1703799414,3cyclictest9-21ksoftirqd/010:20:250
1703799414,3cyclictest9-21ksoftirqd/008:30:230
17037994125,4cyclictest9-21ksoftirqd/011:30:000
1703799410,2cyclictest121rcu_preempt10:30:130
139391410,2ptp4l401ktimersoftd/310:12:473
139391410,0ptp4l401ktimersoftd/311:00:153
1703799404,3cyclictest9-21ksoftirqd/011:05:260
1703799403,2cyclictest9-21ksoftirqd/011:20:240
1703799401,5cyclictest9-21ksoftirqd/012:00:270
17037994012,9cyclictest9-21ksoftirqd/010:55:010
1703899391,36cyclictest2373-21cron11:09:591
1703799396,4cyclictest9-21ksoftirqd/008:05:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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