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2026-06-03 - 07:31
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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 Jun 03, 2026 00:45:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24027997415,12cyclictest3332-21chrt00:21:082
24027997315,12cyclictest26526-21chrt00:04:272
24027997216,11cyclictest10014-21chrt23:27:162
24027997115,12cyclictest14661-21taskset23:37:522
24027997115,11cyclictest12043-21chrt21:10:382
24027997115,10cyclictest21556-21taskset21:34:272
24027997114,11cyclictest5569-21taskset23:19:182
24027997016,11cyclictest5085-21taskset20:58:252
24027997015,12cyclictest14676-21chrt21:19:522
24027997015,11cyclictest9380-21chrt19:58:312
24027997015,10cyclictest7663-21chrt23:21:312
24027997015,10cyclictest18989-21taskset21:26:052
24027996915,12cyclictest5302-21chrt22:07:462
24027996915,12cyclictest26683-21taskset19:19:292
24027996915,11cyclictest1301-21snmpd00:36:172
24027996914,11cyclictest9896-21chrt22:17:482
24027996914,11cyclictest12216-21chrt23:31:022
2402799684,62cyclictest0-21swapper/221:20:292
24027996816,48cyclictest6388-21seq00:30:132
24027996816,11cyclictest17296-21seq23:44:152
24027996814,10cyclictest21921-21taskset23:54:412
24027996715,11cyclictest18673-21seq20:16:592
24027996714,51cyclictest0-21swapper/221:05:302
24027996714,11cyclictest12221-21taskset22:22:542
24027996711,14cyclictest32679-21sed19:40:002
24027996618,10cyclictest662-21taskset23:09:582
24027996616,11cyclictest31820-21seq19:33:192
24027996616,11cyclictest30706-21seq21:53:392
24027996611,12cyclictest12026-21sed20:05:012
134491660,22ptp4l19879-21/usr/sbin/munin21:30:291
2402799652,60cyclictest0-21swapper/219:45:172
24027996519,11cyclictest23351-21taskset20:27:412
24027996515,10cyclictest32618-21runrttasks20:45:432
24027996514,9cyclictest29978-21cut00:10:202
24027996513,17cyclictest24726-21sed22:50:192
24027996420,12cyclictest2806-21chrt20:53:362
24027996419,11cyclictest13847-21taskset20:06:422
24027996419,10cyclictest7045-21taskset19:53:022
24027996419,10cyclictest21320-21chrt22:41:392
24027996418,9cyclictest28300-21taskset21:47:192
24027996418,10cyclictest28934-21taskset00:08:212
24027996418,10cyclictest25952-21taskset19:13:062
24027996319,11cyclictest19210-21taskset22:39:142
24027996218,11cyclictest23985-21taskset20:30:092
24027996214,10cyclictest534-21runrttasks21:58:202
24027996212,11cyclictest6209-21latency_hist00:30:002
24027996211,10cyclictest24473-21df_abs21:40:142
24027996118,11cyclictest16627-21taskset22:30:362
24027996118,11cyclictest16627-21taskset22:30:362
24027996117,17cyclictest19563-21fschecks_time20:20:162
24027996117,10cyclictest28206-21taskset20:38:112
24027996112,11cyclictest30756-21sed20:45:002
24027996112,11cyclictest13433-21irqrtprio22:25:172
24027996110,19cyclictest6067-21cut22:10:152
134491600,4ptp4l0-21swapper/122:34:491
134491600,4ptp4l0-21swapper/122:34:481
24027995919,15cyclictest7312-21taskset21:01:372
134491590,4ptp4l0-21swapper/021:35:170
134491590,3ptp4l0-21swapper/019:50:150
134491580,4ptp4l17017-21latency_hist21:25:000
134491580,4ptp4l0-21swapper/121:05:231
24027995720,16cyclictest23811-21chrt21:38:532
24027995719,17cyclictest17591-21taskset23:45:102
134491570,4ptp4l0-21swapper/122:41:531
24027995617,10cyclictest23895-21chrt23:55:332
24027995613,10cyclictest2487-21runrttasks19:44:132
134491560,4ptp4l0-21swapper/123:33:361
134491560,4ptp4l0-21swapper/122:17:151
134491560,4ptp4l0-21swapper/120:08:091
134491560,3ptp4l0-21swapper/319:55:343
134491560,3ptp4l0-21swapper/100:35:231
134491560,3ptp4l0-21swapper/023:25:390
134491560,3ptp4l0-21swapper/023:15:160
134491560,18ptp4l0-21swapper/120:12:061
2402799559,42cyclictest2619-21switchtime23:10:262
2402799559,42cyclictest2619-21switchtime23:10:262
134491550,4ptp4l0-21swapper/121:13:001
134491550,4ptp4l0-21swapper/000:30:220
134491550,3ptp4l0-21swapper/121:25:201
24027995418,10cyclictest30644-21chrt23:02:582
134491540,6ptp4l25-21ksoftirqd/123:40:251
134491540,4ptp4l0-21swapper/123:15:441
134491540,4ptp4l0-21swapper/121:20:161
134491540,4ptp4l0-21swapper/022:16:400
134491530,4ptp4l0-21swapper/123:05:031
134491530,4ptp4l0-21swapper/100:11:361
134491530,4ptp4l0-21swapper/000:18:310
134491530,3ptp4l0-21swapper/120:24:541
134491530,3ptp4l0-21swapper/100:25:341
134491520,4ptp4l0-21swapper/319:26:383
134491520,4ptp4l0-21swapper/119:46:241
134491520,3ptp4l0-21swapper/022:13:150
106592520,5sleep10-21swapper/122:20:161
24027995112,7cyclictest2583-21ls22:00:282
134491510,4ptp4l0-21swapper/122:37:241
134491510,3ptp4l0-21swapper/119:43:441
134491500,9ptp4l21993-21df_inode19:05:150
134491500,4ptp4l0-21swapper/323:50:343
134491500,4ptp4l0-21swapper/322:27:183
134491500,4ptp4l0-21swapper/319:40:343
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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