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2025-12-03 - 06:48
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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 Wed Dec 03, 2025 00:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
480321350,6sleep0841899cyclictest21:20:150
8419996130,4cyclictest25-21ksoftirqd/100:00:281
8419996030,10cyclictest25-21ksoftirqd/123:15:231
2847191600,4ptp4l0-21swapper/222:10:152
8419995930,10cyclictest25-21ksoftirqd/119:25:261
2847191590,4ptp4l0-21swapper/119:06:071
2847191590,4ptp4l0-21swapper/023:15:150
2847191580,3ptp4l30648-21apt-get23:25:112
2847191580,3ptp4l0-21swapper/320:01:483
8419995730,4cyclictest25-21ksoftirqd/122:00:151
8419995729,4cyclictest25-21ksoftirqd/122:50:001
8419995728,4cyclictest25-21ksoftirqd/121:25:161
8419995728,4cyclictest25-21ksoftirqd/100:00:011
8419995727,9cyclictest25-21ksoftirqd/100:35:001
8419995727,4cyclictest25-21ksoftirqd/119:45:181
8419995727,4cyclictest25-21ksoftirqd/119:35:011
2847191570,3ptp4l0-21swapper/119:23:201
8419995629,4cyclictest25-21ksoftirqd/100:20:151
8419995628,4cyclictest25-21ksoftirqd/121:10:151
8419995627,9cyclictest25-21ksoftirqd/123:35:201
8419995625,9cyclictest25-21ksoftirqd/123:00:221
8419995625,8cyclictest25-21ksoftirqd/120:55:001
8419995625,4cyclictest25-21ksoftirqd/120:05:201
8419995624,8cyclictest25-21ksoftirqd/123:25:181
8419995622,8cyclictest25-21ksoftirqd/119:50:181
2847191560,3ptp4l0-21swapper/122:39:451
8419995526,5cyclictest25-21ksoftirqd/120:35:301
8419995526,4cyclictest25-21ksoftirqd/120:40:191
8419995525,4cyclictest25-21ksoftirqd/119:15:191
8419995520,9cyclictest25-21ksoftirqd/121:45:131
2847191550,3ptp4l0-21swapper/021:30:170
8419995419,4cyclictest25-21ksoftirqd/121:30:251
2847191540,4ptp4l0-21swapper/322:41:353
2847191540,4ptp4l0-21swapper/219:55:082
122142540,4sleep00-21swapper/023:55:020
8419995327,4cyclictest25-21ksoftirqd/123:30:261
8419995327,4cyclictest25-21ksoftirqd/123:30:251
8419995321,4cyclictest25-21ksoftirqd/122:55:261
2847191530,4ptp4l0-21swapper/319:57:563
2847191530,4ptp4l0-21swapper/222:19:272
8419995226,6cyclictest25-21ksoftirqd/123:40:131
8419995217,9cyclictest25-21ksoftirqd/120:05:001
8419995215,3cyclictest25-21ksoftirqd/122:16:131
841899527,12cyclictest0-21swapper/022:35:280
841899520,6cyclictest31398-21fschecks_time00:35:160
2847191520,5ptp4l841899cyclictest20:10:270
2847191520,5ptp4l841899cyclictest20:10:270
2847191520,4ptp4l0-21swapper/320:25:533
2847191520,3ptp4l0-21swapper/220:07:182
8419995136,3cyclictest25-21ksoftirqd/123:20:251
8419995125,4cyclictest25-21ksoftirqd/121:35:181
8419995125,4cyclictest25-21ksoftirqd/120:10:281
8419995125,4cyclictest25-21ksoftirqd/120:10:281
8419995122,8cyclictest25-21ksoftirqd/100:10:211
8419995120,3cyclictest25-21ksoftirqd/119:55:141
8419995119,8cyclictest25-21ksoftirqd/100:35:141
8419995118,5cyclictest25-21ksoftirqd/121:50:151
841899516,5cyclictest32748-21awk23:30:000
2847191510,4ptp4l0-21swapper/319:46:253
8419995022,4cyclictest25-21ksoftirqd/120:25:301
841899504,7cyclictest24342-21sed23:10:200
2847191500,4ptp4l841899cyclictest00:11:320
2847191500,4ptp4l0-21swapper/323:20:183
2847191500,4ptp4l0-21swapper/323:08:413
2847191500,4ptp4l0-21swapper/322:29:213
2847191500,4ptp4l0-21swapper/319:52:243
2847191500,4ptp4l0-21swapper/319:38:553
8419994922,8cyclictest25-21ksoftirqd/121:55:251
8419994922,4cyclictest25-21ksoftirqd/121:40:211
8419994918,7cyclictest25-21ksoftirqd/120:25:011
8419994918,4cyclictest25-21ksoftirqd/100:05:151
841999490,7cyclictest22213-21sendmail-msp19:40:011
841899496,7cyclictest13124-21grep21:35:290
841899494,8cyclictest14666-21cpuspeed00:00:130
2847191490,4ptp4l0-21swapper/323:33:183
2847191490,4ptp4l0-21swapper/323:33:183
2847191490,4ptp4l0-21swapper/321:39:553
2847191490,4ptp4l0-21swapper/123:11:111
2847191490,3ptp4l0-21swapper/222:27:242
2847191490,3ptp4l0-21swapper/119:41:131
2847191490,13ptp4l9-21ksoftirqd/021:46:010
130162490,3sleep00-21swapper/022:45:250
8419994825,3cyclictest25-21ksoftirqd/120:55:091
8419994822,9cyclictest25-21ksoftirqd/100:25:261
8419994820,4cyclictest25-21ksoftirqd/100:20:001
841899486,7cyclictest0-21swapper/021:25:180
841899485,7cyclictest0-21swapper/022:42:580
841899485,6cyclictest22768-21tail23:05:280
841899484,5cyclictest9-21ksoftirqd/022:30:150
841899483,6cyclictest9-21ksoftirqd/021:00:150
841899482,11cyclictest20408-21taskset21:53:200
2847191480,6ptp4l9-21ksoftirqd/019:05:210
2847191480,4ptp4l0-21swapper/321:14:563
2847191480,4ptp4l0-21swapper/300:10:023
2847191480,4ptp4l0-21swapper/220:18:352
2847191480,3ptp4l0-21swapper/021:15:230
8419994728,7cyclictest25-21ksoftirqd/122:10:281
8419994719,3cyclictest25-21ksoftirqd/122:30:241
841899475,10cyclictest24410-21taskset19:44:140
841899473,7cyclictest15270-21gzip22:50:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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