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2026-04-25 - 20:14
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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 Sat Apr 25, 2026 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
476921200,6sleep32751399cyclictest09:50:163
27511996832,5cyclictest25-21ksoftirqd/107:50:001
27511996831,8cyclictest25-21ksoftirqd/108:30:011
27511996427,7cyclictest25-21ksoftirqd/108:40:281
27511996423,4cyclictest25-21ksoftirqd/109:05:181
27511996332,4cyclictest25-21ksoftirqd/107:35:201
27511996328,4cyclictest25-21ksoftirqd/111:40:011
27511996328,4cyclictest25-21ksoftirqd/111:40:011
27511996326,7cyclictest25-21ksoftirqd/110:55:161
27511996321,13cyclictest25-21ksoftirqd/112:04:551
134491630,4ptp4l0-21swapper/308:45:293
27511996223,9cyclictest25-21ksoftirqd/110:25:131
134491620,4ptp4l0-21swapper/011:25:230
27511996130,4cyclictest25-21ksoftirqd/111:40:131
27511996127,8cyclictest25-21ksoftirqd/108:15:221
27511996127,7cyclictest25-21ksoftirqd/112:25:161
27511996126,8cyclictest25-21ksoftirqd/112:10:001
27511996125,4cyclictest25-21ksoftirqd/111:00:251
27511996124,10cyclictest25-21ksoftirqd/112:20:011
27511996119,4cyclictest25-21ksoftirqd/111:05:131
27511996032,3cyclictest25-21ksoftirqd/108:35:131
27511996026,3cyclictest25-21ksoftirqd/111:20:201
27511996026,3cyclictest25-21ksoftirqd/111:14:211
27511996025,7cyclictest25-21ksoftirqd/109:05:011
134491600,4ptp4l0-21swapper/007:45:200
27511995927,4cyclictest25-21ksoftirqd/108:45:291
27511995923,8cyclictest25-21ksoftirqd/109:25:191
134491590,6ptp4l0-21swapper/107:05:521
134491590,4ptp4l0-21swapper/208:40:262
27511995830,4cyclictest25-21ksoftirqd/110:52:161
27511995828,7cyclictest25-21ksoftirqd/109:45:131
27511995825,8cyclictest25-21ksoftirqd/110:45:241
27511995823,9cyclictest25-21ksoftirqd/112:35:281
27511995823,3cyclictest25-21ksoftirqd/109:10:141
27511995720,6cyclictest25-21ksoftirqd/108:35:011
134491570,3ptp4l0-21swapper/110:10:251
134491570,3ptp4l0-21swapper/010:10:150
134491570,3ptp4l0-21swapper/007:38:430
27511995630,6cyclictest25-21ksoftirqd/107:25:281
27511995628,3cyclictest25-21ksoftirqd/107:10:401
27511995625,3cyclictest25-21ksoftirqd/112:10:131
27511995624,9cyclictest25-21ksoftirqd/109:20:191
27511995623,2cyclictest25-21ksoftirqd/108:05:461
27511995622,3cyclictest25-21ksoftirqd/107:40:131
27511995621,6cyclictest25-21ksoftirqd/112:30:171
27511995621,6cyclictest25-21ksoftirqd/109:55:001
27511995616,9cyclictest25-21ksoftirqd/109:15:161
134491560,3ptp4l5110-21/usr/sbin/munin08:40:180
134491560,3ptp4l0-21swapper/008:54:030
134491560,13ptp4l9499-21apt-config12:20:020
27511995525,8cyclictest25-21ksoftirqd/108:10:161
27511995522,7cyclictest25-21ksoftirqd/111:30:181
27511995520,9cyclictest25-21ksoftirqd/108:50:281
27511995518,6cyclictest25-21ksoftirqd/110:40:191
2751199551,7cyclictest25-21ksoftirqd/109:00:011
134491550,4ptp4l0-21swapper/311:01:003
134491550,4ptp4l0-21swapper/308:12:153
134491550,3ptp4l0-21swapper/211:20:212
299392540,4sleep30-21swapper/309:35:113
27511995422,8cyclictest25-21ksoftirqd/108:00:011
134491540,4ptp4l15660-21cron07:54:590
134491540,4ptp4l0-21swapper/311:06:063
134491540,3ptp4l0-21swapper/312:30:153
2751199537,3cyclictest25-21ksoftirqd/112:15:171
2751199533,7cyclictest121rcu_preempt11:29:511
27511995321,4cyclictest25-21ksoftirqd/111:48:521
27511995318,7cyclictest25-21ksoftirqd/110:20:181
134491530,4ptp4l0-21swapper/008:25:280
134491530,3ptp4l0-21swapper/311:30:263
134491530,3ptp4l0-21swapper/307:40:173
2751199526,3cyclictest25-21ksoftirqd/109:30:191
134491520,4ptp4l0-21swapper/211:34:192
134491520,3ptp4l0-21swapper/111:51:231
134491520,10ptp4l26299-21ntp_states07:05:230
2751199518,6cyclictest25-21ksoftirqd/107:15:261
27511995122,7cyclictest25-21ksoftirqd/109:35:191
27511995122,6cyclictest25-21ksoftirqd/110:35:211
27511995113,10cyclictest25-21ksoftirqd/109:40:231
134491510,5ptp4l0-21swapper/307:07:503
134491510,4ptp4l0-21swapper/310:17:083
134491510,4ptp4l0-21swapper/309:05:083
134491510,4ptp4l0-21swapper/109:56:311
46198500,11rtkit-daemon0-21swapper/312:19:293
2751199507,6cyclictest25-21ksoftirqd/108:20:161
2751199506,5cyclictest25-21ksoftirqd/107:50:141
27511995023,6cyclictest25-21ksoftirqd/110:15:401
27511995015,7cyclictest25-21ksoftirqd/107:35:011
134491500,3ptp4l0-21swapper/312:35:253
134491500,3ptp4l0-21swapper/211:10:362
134491500,10ptp4l9-21ksoftirqd/007:24:270
27512994930,17cyclictest33-21ksoftirqd/209:30:012
134491490,4ptp4l0-21swapper/311:27:423
134491490,4ptp4l0-21swapper/210:13:172
134491490,3ptp4l0-21swapper/308:54:373
2751199484,3cyclictest25-21ksoftirqd/108:00:161
2751199482,7cyclictest25-21ksoftirqd/107:20:171
2751199482,6cyclictest121rcu_preempt10:08:061
134491480,4ptp4l0-21swapper/311:50:593
134491480,4ptp4l0-21swapper/211:07:462
27511994735,3cyclictest25-21ksoftirqd/110:00:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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