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2026-03-24 - 04:11
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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 Tue Mar 24, 2026 00:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1760021160,3sleep31396899cyclictest21:35:173
134491680,3ptp4l31325-21users23:10:260
134491670,5ptp4l0-21swapper/022:40:110
134491660,5ptp4l41-21ksoftirqd/323:00:013
13967996524,4cyclictest33-21ksoftirqd/221:00:192
13967996426,5cyclictest33-21ksoftirqd/220:39:592
13967996426,5cyclictest33-21ksoftirqd/220:39:592
134491640,19ptp4l4682-21irqstats22:15:200
134491640,19ptp4l4682-21irqstats22:15:190
134491620,4ptp4l4177-21meminfo21:05:211
163002610,3sleep0101ktimersoftd/021:30:280
13967996025,4cyclictest33-21ksoftirqd/223:48:052
13967996025,4cyclictest33-21ksoftirqd/219:59:192
134491590,4ptp4l0-21swapper/223:27:432
134491590,4ptp4l0-21swapper/122:05:151
13967995828,4cyclictest33-21ksoftirqd/221:20:002
134491580,4ptp4l0-21swapper/022:30:180
134491580,3ptp4l0-21swapper/323:45:243
134491580,3ptp4l0-21swapper/120:30:281
134491580,3ptp4l0-21swapper/100:10:151
13967995725,6cyclictest33-21ksoftirqd/220:25:002
13967995724,4cyclictest33-21ksoftirqd/220:42:042
134491570,5ptp4l0-21swapper/120:20:031
134491570,4ptp4l0-21swapper/221:50:002
134491570,3ptp4l0-21swapper/023:20:240
134491570,3ptp4l0-21swapper/023:20:240
134491570,3ptp4l0-21swapper/021:25:250
13968995610,44cyclictest0-21swapper/322:32:293
13967995624,4cyclictest33-21ksoftirqd/221:44:592
13967995623,6cyclictest33-21ksoftirqd/220:15:212
13967995623,5cyclictest33-21ksoftirqd/220:50:202
134491560,4ptp4l0-21swapper/020:27:350
13967995523,4cyclictest33-21ksoftirqd/219:11:442
13967995522,6cyclictest33-21ksoftirqd/220:15:012
134491550,4ptp4l0-21swapper/121:19:281
134491550,13ptp4l0-21swapper/019:35:170
13967995427,7cyclictest33-21ksoftirqd/223:11:542
13967995424,3cyclictest33-21ksoftirqd/220:55:182
13967995420,3cyclictest33-21ksoftirqd/219:41:112
13967995323,9cyclictest33-21ksoftirqd/223:41:192
13967995323,3cyclictest33-21ksoftirqd/222:25:002
13967995322,4cyclictest33-21ksoftirqd/200:05:092
13967995320,6cyclictest33-21ksoftirqd/220:45:162
13967995317,6cyclictest33-21ksoftirqd/223:50:232
134491530,4ptp4l0-21swapper/023:55:280
134491530,3ptp4l0-21swapper/121:38:221
13967995222,5cyclictest33-21ksoftirqd/222:44:232
13967995221,6cyclictest33-21ksoftirqd/220:00:232
13967995221,5cyclictest33-21ksoftirqd/221:10:532
13967995220,6cyclictest33-21ksoftirqd/220:05:162
13967995220,3cyclictest33-21ksoftirqd/222:39:322
13967995215,6cyclictest33-21ksoftirqd/222:20:002
13967995215,6cyclictest33-21ksoftirqd/222:19:592
134491520,4ptp4l0-21swapper/123:50:101
134491520,4ptp4l0-21swapper/123:05:231
134491520,4ptp4l0-21swapper/119:18:571
134491520,4ptp4l0-21swapper/000:09:520
134491520,3ptp4l0-21swapper/123:55:161
13967995123,4cyclictest33-21ksoftirqd/222:05:162
13967995121,3cyclictest33-21ksoftirqd/219:50:142
13967995120,3cyclictest33-21ksoftirqd/223:22:202
13967995120,3cyclictest33-21ksoftirqd/223:22:202
13967995118,4cyclictest33-21ksoftirqd/222:13:432
13967995117,5cyclictest33-21ksoftirqd/220:25:182
134491510,4ptp4l0-21swapper/122:37:321
134491510,3ptp4l0-21swapper/021:57:150
134491510,3ptp4l0-21swapper/021:00:030
134491510,3ptp4l0-21swapper/000:36:380
13967995020,5cyclictest33-21ksoftirqd/221:35:152
13967995019,4cyclictest33-21ksoftirqd/222:30:112
13967995018,3cyclictest33-21ksoftirqd/223:30:222
13967995015,4cyclictest33-21ksoftirqd/219:25:222
13967995015,4cyclictest33-21ksoftirqd/219:25:212
13967995013,8cyclictest33-21ksoftirqd/200:14:452
134491500,8ptp4l0-21swapper/019:20:150
134491500,4ptp4l0-21swapper/021:14:120
134491500,3ptp4l0-21swapper/119:25:411
134491500,3ptp4l0-21swapper/119:25:411
134491500,3ptp4l0-21swapper/021:09:270
134491500,3ptp4l0-21swapper/019:12:020
134491500,2ptp4l0-21swapper/020:42:340
13967994921,3cyclictest33-21ksoftirqd/220:30:272
13967994919,4cyclictest33-21ksoftirqd/200:25:152
13967994911,8cyclictest33-21ksoftirqd/200:39:402
134491490,4ptp4l0-21swapper/120:04:021
134491490,4ptp4l0-21swapper/020:15:020
134491490,4ptp4l0-21swapper/019:57:040
134491490,3ptp4l0-21swapper/120:45:221
134491490,3ptp4l0-21swapper/023:46:160
134491490,3ptp4l0-21swapper/022:01:270
134491490,3ptp4l0-21swapper/021:44:580
1396799488,14cyclictest33-21ksoftirqd/222:20:032
13967994812,6cyclictest33-21ksoftirqd/221:25:012
134491480,5ptp4l0-21swapper/219:06:142
134491480,4ptp4l0-21swapper/223:04:402
134491480,4ptp4l0-21swapper/023:37:050
134491480,3ptp4l0-21swapper/122:42:031
134491480,3ptp4l0-21swapper/122:02:391
134491480,3ptp4l0-21swapper/023:29:190
134491480,3ptp4l0-21swapper/021:46:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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