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2025-12-03 - 19:29
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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 12:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
831321430,5sleep31369199cyclictest08:05:233
2847191710,4ptp4l13107-21python08:15:251
2847191670,5ptp4l0-21swapper/311:45:233
2847191650,2ptp4l1232-21ntp_states07:50:231
2847191630,3ptp4l28852-21ls07:40:201
2847191620,3ptp4l0-21swapper/107:30:261
2847191620,23ptp4l0-21swapper/109:15:251
2847191610,4ptp4l0-21swapper/308:40:323
2847191610,4ptp4l0-21swapper/109:01:111
2847191600,4ptp4l0-21swapper/112:00:181
2847191590,5ptp4l0-21swapper/312:30:303
2847191590,4ptp4l0-21swapper/108:43:181
2847191590,3ptp4l0-21swapper/112:35:261
2847191590,3ptp4l0-21swapper/111:55:061
2847191590,3ptp4l0-21swapper/009:30:270
2847191580,3ptp4l0-21swapper/110:42:341
2847191580,3ptp4l0-21swapper/010:30:170
2847191580,3ptp4l0-21swapper/008:10:160
1369099582,32cyclictest0-21swapper/212:19:482
2847191570,5ptp4l0-21swapper/307:06:073
2847191570,4ptp4l0-21swapper/307:41:293
2847191570,4ptp4l0-21swapper/209:23:242
2847191570,4ptp4l0-21swapper/108:45:171
2847191570,3ptp4l0-21swapper/109:20:151
13690995726,4cyclictest33-21ksoftirqd/208:55:152
2847191560,4ptp4l0-21swapper/108:26:201
2847191560,4ptp4l0-21swapper/009:35:310
2847191560,4ptp4l0-21swapper/009:35:310
2847191550,4ptp4l0-21swapper/311:27:353
2847191550,4ptp4l0-21swapper/107:37:421
2847191550,4ptp4l0-21swapper/012:18:260
2847191550,4ptp4l0-21swapper/011:40:190
2847191540,4ptp4l0-21swapper/109:51:091
2847191540,3ptp4l0-21swapper/110:38:511
13690995426,4cyclictest33-21ksoftirqd/211:00:172
2847191530,4ptp4l0-21swapper/209:35:052
2847191530,4ptp4l0-21swapper/209:35:052
2847191530,4ptp4l0-21swapper/111:12:191
2847191530,4ptp4l0-21swapper/110:04:231
2847191530,4ptp4l0-21swapper/109:41:291
2847191520,4ptp4l0-21swapper/311:06:263
2847191520,4ptp4l0-21swapper/209:08:282
2847191520,4ptp4l0-21swapper/207:15:212
2847191520,4ptp4l0-21swapper/112:11:011
2847191520,4ptp4l0-21swapper/110:34:581
2847191520,4ptp4l0-21swapper/108:57:241
2847191520,4ptp4l0-21swapper/107:58:171
2847191520,3ptp4l0-21swapper/111:47:081
2847191520,3ptp4l0-21swapper/109:11:291
1369099524,7cyclictest0-21swapper/210:15:242
2847191510,4ptp4l0-21swapper/309:43:253
2847191510,4ptp4l0-21swapper/109:59:541
2847191510,4ptp4l0-21swapper/108:53:341
2847191510,4ptp4l0-21swapper/108:02:071
2847191510,3ptp4l0-21swapper/108:35:231
2847191510,12ptp4l12474-21ntp_states07:05:240
1369099515,7cyclictest0-21swapper/212:25:182
13690995126,5cyclictest33-21ksoftirqd/207:20:222
1369099512,30cyclictest0-21swapper/208:49:232
2847191500,4ptp4l0-21swapper/208:18:222
2847191500,4ptp4l0-21swapper/112:20:571
2847191500,4ptp4l0-21swapper/112:05:411
2847191500,4ptp4l0-21swapper/007:20:300
2847191500,3ptp4l0-21swapper/109:08:581
2847191500,3ptp4l0-21swapper/108:22:341
1369099505,7cyclictest0-21swapper/212:20:222
1369099505,6cyclictest0-21swapper/209:55:322
1369099504,7cyclictest0-21swapper/211:05:222
1369099504,7cyclictest0-21swapper/210:05:152
2847191490,9ptp4l12696-21python07:05:251
2847191490,4ptp4l0-21swapper/310:03:353
2847191490,4ptp4l0-21swapper/110:11:221
2847191490,4ptp4l0-21swapper/107:12:401
2847191490,4ptp4l0-21swapper/009:53:460
2847191490,3ptp4l0-21swapper/112:15:561
1369099495,7cyclictest0-21swapper/209:31:062
1369099495,6cyclictest0-21swapper/210:40:252
1369099494,7cyclictest0-21swapper/209:00:292
1369099494,7cyclictest0-21swapper/207:35:312
1369099492,26cyclictest0-21swapper/211:29:382
2847191480,4ptp4l0-21swapper/008:20:010
2847191480,3ptp4l0-21swapper/008:04:450
1369099485,6cyclictest0-21swapper/212:34:122
1369099485,6cyclictest0-21swapper/211:55:222
1369099485,6cyclictest0-21swapper/208:10:262
1369099484,7cyclictest0-21swapper/210:45:232
1369099484,6cyclictest0-21swapper/212:05:202
1369099484,6cyclictest0-21swapper/211:35:192
2847191470,6ptp4l0-21swapper/110:50:221
2847191470,4ptp4l0-21swapper/112:26:041
203112470,4sleep00-21swapper/012:00:130
1369099476,6cyclictest0-21swapper/209:50:252
1369099475,6cyclictest0-21swapper/210:03:372
1369099475,6cyclictest0-21swapper/209:25:252
1369099475,6cyclictest0-21swapper/207:25:422
1369099474,7cyclictest0-21swapper/210:33:362
1369099474,6cyclictest0-21swapper/211:30:192
1369099474,6cyclictest0-21swapper/208:50:232
1369099474,11cyclictest0-21swapper/212:35:192
1369099474,10cyclictest0-21swapper/210:35:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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