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2026-05-11 - 16:06
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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 Mon May 11, 2026 12:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
319692750,3sleep231968-21grep09:25:252
319692750,3sleep231968-21grep09:25:252
176342750,4sleep10-21swapper/110:05:201
134491630,2ptp4l6698-21ls09:40:251
134491620,5ptp4l0-21swapper/010:30:200
37299597,6cyclictest0-21swapper/011:50:280
37299577,6cyclictest0-21swapper/011:00:130
134491570,5ptp4l0-21swapper/010:15:200
134491570,3ptp4l0-21swapper/008:40:350
37499566,6cyclictest0-21swapper/212:15:212
134491560,4ptp4l0-21swapper/108:09:001
134491560,3ptp4l0-21swapper/111:30:251
134491560,3ptp4l0-21swapper/107:20:381
134491560,3ptp4l0-21swapper/007:14:220
134491560,15ptp4l0-21swapper/107:51:311
134491550,4ptp4l0-21swapper/109:14:421
134491550,4ptp4l0-21swapper/108:35:401
134491550,3ptp4l0-21swapper/107:45:251
37499545,6cyclictest0-21swapper/207:15:222
37499543,10cyclictest0-21swapper/207:10:222
134491540,4ptp4l0-21swapper/208:29:092
134491540,4ptp4l0-21swapper/108:29:261
134491540,3ptp4l0-21swapper/110:42:111
37499535,6cyclictest0-21swapper/209:40:232
37499535,6cyclictest0-21swapper/209:35:172
37499535,6cyclictest0-21swapper/207:25:152
37499534,6cyclictest0-21swapper/210:15:242
37499534,6cyclictest0-21swapper/207:30:222
37499532,7cyclictest0-21swapper/207:49:272
37299537,6cyclictest0-21swapper/009:29:040
37299537,6cyclictest0-21swapper/009:29:040
134491530,11ptp4l31070-21iostat07:05:191
134491530,11ptp4l0-21swapper/107:38:211
37499524,6cyclictest0-21swapper/212:20:272
37499524,6cyclictest0-21swapper/209:15:132
37499524,6cyclictest0-21swapper/209:05:172
37299526,5cyclictest0-21swapper/011:40:160
37299524,15cyclictest8290-21iostat10:55:190
134491520,3ptp4l0-21swapper/109:20:591
37499515,11cyclictest0-21swapper/207:35:132
37499514,11cyclictest0-21swapper/210:55:232
37499513,6cyclictest0-21swapper/208:00:262
37499513,10cyclictest0-21swapper/211:30:202
37499511,6cyclictest33-21ksoftirqd/208:05:242
37499510,6cyclictest14621-21/usr/sbin/munin11:10:192
37299516,6cyclictest20765-21switchtime12:30:290
134491510,5ptp4l0-21swapper/007:06:490
134491510,4ptp4l0-21swapper/107:58:321
134491510,3ptp4l1317-21runrttasks09:15:181
134491510,3ptp4l0-21swapper/307:26:283
37499507,6cyclictest0-21swapper/212:00:262
37499505,11cyclictest0-21swapper/211:35:142
37499504,6cyclictest0-21swapper/210:45:172
37499504,6cyclictest0-21swapper/209:55:212
37499504,6cyclictest0-21swapper/209:45:232
37499503,6cyclictest0-21swapper/209:00:262
37499503,11cyclictest0-21swapper/211:25:262
37499503,11cyclictest0-21swapper/209:10:182
37499502,6cyclictest0-21swapper/210:54:582
37499502,6cyclictest0-21swapper/208:35:172
37499502,6cyclictest0-21swapper/207:40:182
37299504,17cyclictest17091-21sed07:45:170
134491500,4ptp4l0-21swapper/112:08:361
134491500,4ptp4l0-21swapper/108:44:211
134491500,4ptp4l0-21swapper/108:34:271
134491500,4ptp4l0-21swapper/108:19:331
37499494,11cyclictest0-21swapper/210:25:192
37499494,10cyclictest0-21swapper/211:00:132
37499493,6cyclictest0-21swapper/210:35:212
37499493,6cyclictest0-21swapper/210:00:152
37499493,6cyclictest0-21swapper/208:30:142
37499493,13cyclictest0-21swapper/211:50:172
37499492,7cyclictest0-21swapper/210:30:462
37499492,7cyclictest0-21swapper/210:20:282
37499492,6cyclictest0-21swapper/208:55:122
37499492,6cyclictest0-21swapper/208:55:122
37299498,6cyclictest0-21swapper/012:25:220
37299494,12cyclictest27867-21users11:35:300
134491490,5ptp4l0-21swapper/112:01:331
134491490,4ptp4l0-21swapper/311:45:573
134491490,4ptp4l0-21swapper/111:50:411
134491490,4ptp4l0-21swapper/109:52:051
37499481,6cyclictest33-21ksoftirqd/207:20:142
37499481,5cyclictest33-21ksoftirqd/209:30:142
37299488,6cyclictest0-21swapper/009:30:240
37299482,7cyclictest134491ptp4l10:43:150
134491480,3ptp4l37399cyclictest07:10:371
134491480,3ptp4l0-21swapper/112:35:271
134491480,3ptp4l0-21swapper/109:38:171
37499474,10cyclictest0-21swapper/207:55:182
37499473,6cyclictest33-21ksoftirqd/209:25:002
37499472,11cyclictest0-21swapper/212:30:182
37299479,6cyclictest0-21swapper/007:20:160
37299477,7cyclictest0-21swapper/011:48:160
134491470,5ptp4l0-21swapper/109:55:131
134491470,4ptp4l0-21swapper/311:41:043
134491470,3ptp4l0-21swapper/308:16:413
37499462,6cyclictest0-21swapper/211:09:542
37499462,6cyclictest0-21swapper/208:52:582
37499462,4cyclictest0-21swapper/207:51:362
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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