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2026-05-18 - 17:10
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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 rackdslot1.osadl.org (updated Mon May 18, 2026 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1307221690,5sleep31896999cyclictest10:25:003
18967998233,4cyclictest33-21ksoftirqd/212:10:292
134491740,25ptp4l32680-21seq08:49:061
18969996932,5cyclictest41-21ksoftirqd/308:08:443
134491690,7ptp4l0-21swapper/007:05:170
1896799663,33cyclictest0-21swapper/208:40:162
1896799662,35cyclictest0-21swapper/210:06:552
1896799662,35cyclictest0-21swapper/210:06:552
224122650,4sleep00-21swapper/008:25:180
18969996529,4cyclictest41-21ksoftirqd/309:38:113
1896799652,35cyclictest0-21swapper/208:29:552
1896799652,34cyclictest0-21swapper/207:56:552
1896799652,33cyclictest0-21swapper/209:29:432
185202650,4sleep20-21swapper/210:35:192
18969996427,9cyclictest41-21ksoftirqd/311:50:273
18967996426,4cyclictest33-21ksoftirqd/209:50:172
1896799642,36cyclictest0-21swapper/211:22:562
1896799642,35cyclictest0-21swapper/210:10:202
1896799642,33cyclictest0-21swapper/211:45:172
1896799642,27cyclictest0-21swapper/209:11:332
1896799642,27cyclictest0-21swapper/209:11:332
18967996322,6cyclictest33-21ksoftirqd/208:00:242
18969996232,5cyclictest41-21ksoftirqd/311:25:183
18967996232,4cyclictest33-21ksoftirqd/212:35:192
18967996232,4cyclictest33-21ksoftirqd/208:10:012
18967996230,9cyclictest33-21ksoftirqd/210:30:282
18967996226,8cyclictest33-21ksoftirqd/212:20:222
1896799622,33cyclictest0-21swapper/209:49:452
1896799622,32cyclictest0-21swapper/208:55:242
134491620,3ptp4l8190-21taskset11:22:580
18969996133,3cyclictest41-21ksoftirqd/310:25:133
18969996130,4cyclictest41-21ksoftirqd/309:29:423
18969996130,3cyclictest41-21ksoftirqd/311:35:163
18969996129,3cyclictest41-21ksoftirqd/309:20:273
18969996127,4cyclictest41-21ksoftirqd/311:50:013
18969996127,4cyclictest41-21ksoftirqd/307:20:233
18969996118,9cyclictest41-21ksoftirqd/308:45:193
18967996125,3cyclictest33-21ksoftirqd/212:05:272
18967996123,4cyclictest33-21ksoftirqd/211:00:192
1896799612,32cyclictest0-21swapper/212:15:232
18967996116,7cyclictest33-21ksoftirqd/210:20:342
134491610,4ptp4l0-21swapper/207:30:082
134491610,17ptp4l0-21swapper/107:55:261
18969996029,4cyclictest41-21ksoftirqd/308:43:553
18969996028,3cyclictest41-21ksoftirqd/307:10:173
18969996027,3cyclictest41-21ksoftirqd/309:54:593
18969996023,4cyclictest41-21ksoftirqd/312:05:273
18969996023,4cyclictest41-21ksoftirqd/310:04:593
18967996022,8cyclictest33-21ksoftirqd/211:45:002
134491600,3ptp4l0-21swapper/109:45:271
18969995926,11cyclictest41-21ksoftirqd/311:18:183
18967995930,9cyclictest33-21ksoftirqd/210:40:262
18967995926,7cyclictest33-21ksoftirqd/211:10:242
18967995926,7cyclictest33-21ksoftirqd/211:10:242
134491590,5ptp4l0-21swapper/012:15:230
134491590,3ptp4l0-21swapper/208:45:292
134491590,3ptp4l0-21swapper/108:59:241
18969995830,4cyclictest41-21ksoftirqd/308:10:243
18969995827,3cyclictest41-21ksoftirqd/310:10:163
18967995825,7cyclictest33-21ksoftirqd/209:30:262
18967995822,4cyclictest33-21ksoftirqd/208:30:232
134491580,4ptp4l0-21swapper/010:15:190
134491580,14ptp4l0-21swapper/010:50:180
134491570,4ptp4l20345-21df_abs11:50:141
134491570,4ptp4l0-21swapper/009:00:150
134491570,3ptp4l0-21swapper/109:06:351
134491570,3ptp4l0-21swapper/008:50:210
134491570,3ptp4l0-21swapper/007:45:140
134491570,2ptp4l0-21swapper/012:10:260
18969995629,3cyclictest41-21ksoftirqd/308:20:003
18969995623,4cyclictest41-21ksoftirqd/308:35:213
18969995615,9cyclictest41-21ksoftirqd/308:00:173
18967995623,5cyclictest33-21ksoftirqd/212:04:002
18967995618,8cyclictest33-21ksoftirqd/210:51:402
134491560,4ptp4l0-21swapper/107:50:201
134491560,4ptp4l0-21swapper/107:09:071
134491560,3ptp4l0-21swapper/111:33:181
249512550,6sleep01896499cyclictest08:30:240
1896999559,3cyclictest121rcu_preempt08:59:083
18969995528,4cyclictest41-21ksoftirqd/307:25:123
18969995528,3cyclictest41-21ksoftirqd/310:49:493
18969995523,9cyclictest41-21ksoftirqd/308:25:183
18969995522,4cyclictest41-21ksoftirqd/310:30:263
18969995522,4cyclictest41-21ksoftirqd/307:45:253
18967995517,3cyclictest33-21ksoftirqd/208:35:192
134491550,3ptp4l0-21swapper/311:41:163
134491550,3ptp4l0-21swapper/110:26:481
18969995425,4cyclictest41-21ksoftirqd/309:31:353
18969995425,3cyclictest41-21ksoftirqd/312:25:173
18969995424,3cyclictest41-21ksoftirqd/311:00:143
18969995423,4cyclictest41-21ksoftirqd/307:15:163
18969995422,3cyclictest121rcu_preempt09:46:253
18969995417,4cyclictest41-21ksoftirqd/311:30:233
18967995422,9cyclictest33-21ksoftirqd/208:50:122
18967995420,8cyclictest33-21ksoftirqd/209:43:402
18967995419,9cyclictest33-21ksoftirqd/210:19:182
134491540,5ptp4l1896499cyclictest08:45:200
134491540,4ptp4l0-21swapper/312:00:193
134491540,4ptp4l0-21swapper/311:12:323
134491540,4ptp4l0-21swapper/311:12:323
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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