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2025-09-18 - 03:26
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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 50 highest latencies:
System rackdslot3.osadl.org (updated Wed Sep 17, 2025 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
137191234168,22phc2sys0-21swapper/307:08:113
114432206171,23sleep10-21swapper/107:06:451
113852202169,22sleep00-21swapper/007:06:000
114492201168,22sleep20-21swapper/207:06:512
15082640,5sleep0101ktimersoftd/011:15:260
203582590,1sleep30-21swapper/309:40:253
11995995621,6cyclictest9-21ksoftirqd/008:05:000
136991550,0ptp4l401ktimersoftd/310:51:193
11995995524,7cyclictest9-21ksoftirqd/010:15:000
11995995424,7cyclictest9-21ksoftirqd/009:20:010
11995995421,7cyclictest9-21ksoftirqd/012:10:010
11995995421,5cyclictest9-21ksoftirqd/010:50:000
11995995421,5cyclictest9-21ksoftirqd/010:00:000
11995995420,6cyclictest9-21ksoftirqd/010:40:010
11995995417,6cyclictest9-21ksoftirqd/010:45:000
11995995317,2cyclictest121rcu_preempt09:00:240
11995995316,5cyclictest9-21ksoftirqd/008:25:010
255242520,1sleep10-21swapper/111:00:141
11995995215,8cyclictest9-21ksoftirqd/010:15:190
11995995124,7cyclictest9-21ksoftirqd/007:45:000
11995995120,6cyclictest9-21ksoftirqd/008:25:210
11995995120,4cyclictest9-21ksoftirqd/007:30:290
11995995119,4cyclictest9-21ksoftirqd/009:10:220
11995995118,6cyclictest9-21ksoftirqd/011:30:130
11995995117,6cyclictest9-21ksoftirqd/009:49:590
11995995115,7cyclictest9-21ksoftirqd/011:55:160
11995995025,3cyclictest9-21ksoftirqd/009:25:010
11995995021,3cyclictest9-21ksoftirqd/009:30:250
11995995016,6cyclictest9-21ksoftirqd/011:50:210
11995995016,6cyclictest9-21ksoftirqd/007:50:250
1199599498,6cyclictest9-21ksoftirqd/010:55:240
1199599497,7cyclictest9-21ksoftirqd/011:10:220
11995994919,4cyclictest9-21ksoftirqd/011:05:000
11995994918,4cyclictest9-21ksoftirqd/009:00:010
11995994917,6cyclictest9-21ksoftirqd/011:25:240
11995994917,6cyclictest9-21ksoftirqd/008:50:140
11995994917,6cyclictest9-21ksoftirqd/007:15:220
11995994916,6cyclictest9-21ksoftirqd/009:05:260
11995994916,6cyclictest9-21ksoftirqd/008:35:210
11995994915,6cyclictest9-21ksoftirqd/010:10:010
11995994915,6cyclictest9-21ksoftirqd/008:15:160
1199599489,7cyclictest9-21ksoftirqd/009:30:010
1199599489,7cyclictest9-21ksoftirqd/008:10:190
11995994819,4cyclictest9-21ksoftirqd/008:40:190
11995994816,6cyclictest9-21ksoftirqd/012:10:180
11995994816,6cyclictest9-21ksoftirqd/009:50:170
11995994816,4cyclictest9-21ksoftirqd/007:45:280
11995994815,6cyclictest9-21ksoftirqd/012:35:160
11995994815,5cyclictest9-21ksoftirqd/010:30:210
11995994814,6cyclictest9-21ksoftirqd/011:35:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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