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2025-12-31 - 21:28
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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 31, 2025 12:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1953499800,77cyclictest6741-21cut12:30:193
134491700,7ptp4l0-21swapper/210:22:342
1953499682,22cyclictest0-21swapper/310:35:013
1953499682,22cyclictest0-21swapper/310:35:013
1953499662,28cyclictest0-21swapper/312:15:583
1953499660,62cyclictest8882-21cut10:15:193
1953499660,22cyclictest137891phc2sys07:35:283
1953499631,59cyclictest24301-21dpkg08:30:003
134491630,3ptp4l8746-21fschecks_time09:05:160
1953499620,58cyclictest11051-21which10:20:163
134491620,4ptp4l0-21swapper/009:15:280
134491610,4ptp4l0-21swapper/010:49:380
134491610,3ptp4l0-21swapper/107:35:191
134491600,6ptp4l19113-21taskset07:08:280
134491600,4ptp4l31538-21apt-get12:15:121
134491600,4ptp4l0-21swapper/011:29:300
1953499590,13cyclictest137891phc2sys11:15:013
1953499582,54cyclictest0-21swapper/310:05:223
134491580,6ptp4l0-21swapper/207:07:262
134491580,4ptp4l0-21swapper/110:53:431
134491580,3ptp4l0-21swapper/311:00:013
134491580,3ptp4l0-21swapper/108:20:151
134491570,6ptp4l0-21swapper/307:06:103
1953499562,23cyclictest0-21swapper/307:32:493
134491560,2ptp4l0-21swapper/108:00:381
134491550,4ptp4l0-21swapper/109:26:081
134491550,4ptp4l0-21swapper/108:08:171
134491540,4ptp4l0-21swapper/210:46:182
134491540,4ptp4l0-21swapper/111:21:391
134491540,4ptp4l0-21swapper/009:35:200
134491540,4ptp4l0-21swapper/009:22:450
134491540,3ptp4l0-21swapper/208:22:152
134491540,3ptp4l0-21swapper/009:50:160
1953499530,50cyclictest17581-21apt-get09:25:123
134491530,4ptp4l0-21swapper/210:38:522
134491530,4ptp4l0-21swapper/208:14:562
134491530,3ptp4l0-21swapper/008:45:280
134491530,3ptp4l0-21swapper/007:50:010
1953499528,21cyclictest0-21swapper/307:27:343
134491520,4ptp4l0-21swapper/112:38:421
134491520,4ptp4l0-21swapper/110:29:281
134491520,4ptp4l0-21swapper/012:30:170
134491520,4ptp4l0-21swapper/008:28:330
134491520,3ptp4l0-21swapper/109:04:201
134491520,3ptp4l0-21swapper/109:04:201
1953499510,23cyclictest28625-21taskset08:36:093
134491510,4ptp4l0-21swapper/208:36:582
134491510,4ptp4l0-21swapper/108:42:531
134491510,4ptp4l0-21swapper/107:34:131
134491510,4ptp4l0-21swapper/107:23:451
134491510,4ptp4l0-21swapper/012:02:270
134491510,4ptp4l0-21swapper/007:45:020
134491510,3ptp4l0-21swapper/209:01:532
134491510,3ptp4l0-21swapper/209:01:532
1953499501,45cyclictest20824-21irqstats11:50:203
1953499500,24cyclictest21356-21chrt07:11:113
174152500,5sleep31953499cyclictest08:15:133
134491500,4ptp4l0-21swapper/211:25:332
134491500,4ptp4l0-21swapper/210:03:162
134491500,4ptp4l0-21swapper/209:05:062
134491500,4ptp4l0-21swapper/111:36:011
134491500,4ptp4l0-21swapper/110:57:341
134491500,4ptp4l0-21swapper/011:39:100
134491500,4ptp4l0-21swapper/009:42:240
134491500,4ptp4l0-21swapper/008:19:120
134491500,3ptp4l3020-21timerwakeupswit12:20:261
134491500,3ptp4l1923-21iostat10:00:180
134491500,3ptp4l0-21swapper/208:06:042
1953499490,22cyclictest1317-21runrttasks08:07:103
134491490,4ptp4l0-21swapper/208:55:332
134491490,4ptp4l0-21swapper/207:13:342
134491490,4ptp4l0-21swapper/011:59:540
134491490,4ptp4l0-21swapper/011:59:540
134491490,3ptp4l0-21swapper/008:00:310
1953499480,26cyclictest21853-21seq10:41:213
134491480,4ptp4l0-21swapper/109:54:391
134491480,4ptp4l0-21swapper/109:36:351
134491480,3ptp4l0-21swapper/210:50:512
134491480,3ptp4l0-21swapper/111:18:461
134491480,3ptp4l0-21swapper/009:47:340
134491480,3ptp4l0-21swapper/009:10:250
134491470,7ptp4l17764-21iostat07:05:181
134491470,4ptp4l0-21swapper/010:08:180
134491470,4ptp4l0-21swapper/007:55:140
1953499461,16cyclictest134491ptp4l10:49:223
1953299460,44cyclictest25-21ksoftirqd/111:50:281
134491460,4ptp4l0-21swapper/208:54:172
134491460,4ptp4l0-21swapper/108:15:491
134491460,4ptp4l0-21swapper/010:18:360
134491460,3ptp4l0-21swapper/210:40:172
134491460,3ptp4l0-21swapper/109:23:301
134491460,3ptp4l0-21swapper/107:58:531
134491460,10ptp4l0-21swapper/311:35:293
1953499452,22cyclictest0-21swapper/308:10:493
19534994514,29cyclictest0-21swapper/309:04:283
19534994514,29cyclictest0-21swapper/309:04:283
1953499451,25cyclictest1317-21runrttasks09:39:583
134491450,5ptp4l30664-21ls12:10:272
134491450,4ptp4l0-21swapper/112:32:531
134491450,3ptp4l0-21swapper/110:03:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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