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2026-08-17 - 18:06
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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 Mon Aug 17, 2026 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591216169,36phc2sys0-21swapper/307:06:583
32572204170,23sleep10-21swapper/107:05:081
53492203170,22sleep20-21swapper/207:08:302
32562200166,22sleep00-21swapper/007:05:070
547428262,11sleep30-21swapper/307:10:003
246102710,2sleep224609-21ptp4l08:50:232
138491620,8ptp4l0-21swapper/308:55:333
152372610,2sleep10-21swapper/109:35:281
138491600,0ptp4l401ktimersoftd/310:50:473
138491560,1ptp4l401ktimersoftd/308:17:473
42632500,5sleep14267-21kernelversion08:10:201
115132500,2sleep20-21swapper/211:40:172
85432490,2sleep10-21swapper/108:20:141
5769994633,10cyclictest41-21ksoftirqd/308:40:003
5769994613,7cyclictest41-21ksoftirqd/311:30:003
5769994414,7cyclictest41-21ksoftirqd/310:05:003
576999437,8cyclictest41-21ksoftirqd/310:40:003
5769994228,3cyclictest41-21ksoftirqd/311:50:203
5769994215,7cyclictest41-21ksoftirqd/309:10:203
5769994215,6cyclictest41-21ksoftirqd/310:30:293
138491410,0ptp4l401ktimersoftd/309:56:013
576999407,7cyclictest41-21ksoftirqd/307:25:003
576999405,3cyclictest41-21ksoftirqd/312:20:293
5769994035,3cyclictest41-21ksoftirqd/308:05:043
5769994035,3cyclictest41-21ksoftirqd/307:30:133
5769994027,11cyclictest41-21ksoftirqd/307:40:003
5769994017,6cyclictest41-21ksoftirqd/307:25:213
138491400,0ptp4l401ktimersoftd/308:00:193
576999399,4cyclictest41-21ksoftirqd/309:15:133
576999394,3cyclictest41-21ksoftirqd/311:00:183
576999393,3cyclictest41-21ksoftirqd/311:10:003
5769993930,3cyclictest41-21ksoftirqd/309:35:003
5769993913,6cyclictest41-21ksoftirqd/312:35:133
576999387,6cyclictest41-21ksoftirqd/311:15:003
576999386,2cyclictest41-21ksoftirqd/310:15:153
5769993834,2cyclictest1303-21runrttasks07:19:553
5769993833,3cyclictest41-21ksoftirqd/312:25:233
5769993825,11cyclictest41-21ksoftirqd/308:50:013
576999381,7cyclictest41-21ksoftirqd/309:40:293
5769993816,2cyclictest41-21ksoftirqd/308:25:283
5769993813,7cyclictest41-21ksoftirqd/310:50:003
576999373,8cyclictest41-21ksoftirqd/312:20:013
5769993734,2cyclictest41-21ksoftirqd/308:15:013
576999373,3cyclictest121rcu_preempt10:20:233
5769993733,3cyclictest41-21ksoftirqd/311:55:183
5769993732,3cyclictest41-21ksoftirqd/310:10:293
5769993732,3cyclictest41-21ksoftirqd/308:45:003
5769993731,3cyclictest41-21ksoftirqd/311:35:213
5769993730,4cyclictest41-21ksoftirqd/311:34:483
576999372,4cyclictest41-21ksoftirqd/308:20:203
5769993710,7cyclictest41-21ksoftirqd/311:15:203
5769993710,3cyclictest41-21ksoftirqd/312:05:193
5768993733,2cyclictest33-21ksoftirqd/212:00:012
5768993732,3cyclictest33-21ksoftirqd/207:50:202
5768993732,3cyclictest33-21ksoftirqd/207:50:012
5768993731,4cyclictest33-21ksoftirqd/211:01:062
5768993731,4cyclictest33-21ksoftirqd/208:08:192
5767993731,4cyclictest6016-21cron12:35:001
5767993731,4cyclictest25-21ksoftirqd/110:37:501
5767993731,4cyclictest25-21ksoftirqd/109:33:071
576999368,4cyclictest41-21ksoftirqd/310:26:273
5769993632,3cyclictest41-21ksoftirqd/311:45:143
5769993632,2cyclictest41-21ksoftirqd/309:00:123
5769993632,2cyclictest41-21ksoftirqd/308:30:173
5769993632,2cyclictest41-21ksoftirqd/307:45:163
5769993631,3cyclictest41-21ksoftirqd/311:20:163
5769993630,4cyclictest41-21ksoftirqd/307:51:113
5769993630,3cyclictest41-21ksoftirqd/312:10:113
5769993630,3cyclictest41-21ksoftirqd/309:50:113
5769993624,2cyclictest41-21ksoftirqd/312:30:273
576999361,8cyclictest41-21ksoftirqd/310:40:163
5768993631,3cyclictest33-21ksoftirqd/209:55:202
5768993631,3cyclictest33-21ksoftirqd/209:25:012
5768993630,4cyclictest33-21ksoftirqd/211:31:352
5768993629,4cyclictest33-21ksoftirqd/208:33:352
5767993630,4cyclictest25-21ksoftirqd/109:22:481
5766993631,3cyclictest9-21ksoftirqd/008:10:100
5766993631,3cyclictest15653-21cron09:40:000
5766993630,4cyclictest9-21ksoftirqd/011:49:020
5766993630,4cyclictest9-21ksoftirqd/011:43:520
5766993630,4cyclictest9-21ksoftirqd/010:31:350
5766993630,4cyclictest9-21ksoftirqd/007:23:050
576999354,3cyclictest41-21ksoftirqd/312:00:133
5769993531,2cyclictest41-21ksoftirqd/307:40:193
5769993530,2cyclictest41-21ksoftirqd/309:25:193
5769993529,4cyclictest41-21ksoftirqd/308:53:373
5769993529,3cyclictest41-21ksoftirqd/309:05:243
5768993531,3cyclictest33-21ksoftirqd/207:59:592
5768993529,4cyclictest33-21ksoftirqd/208:11:522
5768993529,4cyclictest33-21ksoftirqd/207:23:192
5767993529,4cyclictest25-21ksoftirqd/112:26:341
5767993529,4cyclictest25-21ksoftirqd/111:17:541
5767993529,4cyclictest25-21ksoftirqd/108:47:351
5767993529,4cyclictest25-21ksoftirqd/107:50:291
5767993529,4cyclictest25-21ksoftirqd/107:34:491
5766993530,3cyclictest27873-21cron09:00:000
5766993529,4cyclictest9-21ksoftirqd/011:22:540
576999345,3cyclictest41-21ksoftirqd/309:20:123
5769993431,2cyclictest41-21ksoftirqd/309:35:193
5769993429,3cyclictest41-21ksoftirqd/310:55:443
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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