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2026-04-07 - 07:48
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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 rack7slot1.osadl.org (updated Tue Apr 07, 2026 00:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4774211854,58sleep20-21swapper/219:08:052
4911211553,23sleep00-21swapper/019:09:520
4639211452,56sleep30-21swapper/319:06:203
4642211351,23sleep10-21swapper/119:06:221
114542580,3sleep324885-21stress00:25:123
503999413,36cyclictest24885-21stress21:10:213
503199416,17cyclictest0-21swapper/222:55:252
503199416,17cyclictest0-21swapper/222:55:252
502299415,20cyclictest0-21swapper/020:30:160
503999403,34cyclictest24883-21stress23:59:223
503999402,35cyclictest24885-21stress21:20:313
503999393,33cyclictest24883-21stress22:21:473
503999392,34cyclictest24885-21stress21:40:293
5039993918,19cyclictest0-21swapper/323:30:223
5039993918,18cyclictest0-21swapper/321:55:153
503999391,35cyclictest24883-21stress23:20:123
503999391,35cyclictest24883-21stress23:20:113
5031993916,20cyclictest0-21swapper/221:37:432
502399397,26cyclictest0-21swapper/119:48:191
503999386,29cyclictest24885-21stress22:50:163
503999383,33cyclictest24885-21stress21:15:153
503999383,33cyclictest24883-21stress00:15:173
503999383,32cyclictest24885-21stress22:05:163
503999383,32cyclictest24885-21stress22:05:163
503999383,32cyclictest24883-21stress22:45:233
503999383,32cyclictest2385-21awk20:15:193
503999383,32cyclictest18872-21/usr/sbin/munin19:40:103
503999382,34cyclictest24883-21stress23:25:283
503999382,34cyclictest24883-21stress23:25:273
503999382,34cyclictest24883-21stress23:17:253
503999382,34cyclictest24883-21stress00:12:113
503999382,33cyclictest24883-21stress22:57:183
503999382,33cyclictest24883-21stress22:57:183
503999382,33cyclictest24883-21stress22:25:173
5039993814,21cyclictest0-21swapper/323:45:343
5039993813,23cyclictest0-21swapper/321:27:103
5039993813,23cyclictest0-21swapper/321:27:103
5023993810,25cyclictest0-21swapper/122:55:141
5023993810,25cyclictest0-21swapper/122:55:141
5023993810,18cyclictest0-21swapper/120:39:251
313852385,13sleep20-21swapper/220:09:292
225612385,11sleep10-21swapper/121:03:571
162692385,11sleep20-21swapper/219:32:312
98172375,11sleep00-21swapper/019:17:130
69052375,11sleep10-21swapper/119:12:041
503999376,28cyclictest24885-21stress23:10:133
503999376,28cyclictest24885-21stress23:10:123
503999375,30cyclictest0-21swapper/319:25:123
503999375,30cyclictest0-21swapper/319:10:193
503999375,29cyclictest24885-21stress00:37:343
503999374,29cyclictest24883-21stress22:40:213
503999374,29cyclictest24883-21stress22:40:203
503999373,32cyclictest24885-21stress22:03:383
503999373,31cyclictest24885-21stress22:35:353
503999373,31cyclictest24885-21stress22:35:353
503999373,31cyclictest24885-21stress00:30:213
503999373,31cyclictest24883-21stress23:50:403
503999373,31cyclictest24883-21stress23:50:403
503999373,31cyclictest24883-21stress22:31:133
503999373,29cyclictest24885-21stress21:31:073
503999373,29cyclictest24885-21stress21:31:073
503999372,32cyclictest24883-21stress23:01:083
5039993718,17cyclictest0-21swapper/323:05:233
5039993715,20cyclictest0-21swapper/322:11:363
5031993714,20cyclictest0-21swapper/200:05:262
289632375,13sleep20-21swapper/220:01:112
172302375,14sleep10-21swapper/120:50:171
161502374,13sleep10-21swapper/120:48:561
159712375,11sleep20-21swapper/220:46:462
119322375,14sleep10-21swapper/119:22:001
117442375,11sleep20-21swapper/220:37:232
11502375,11sleep20-21swapper/220:14:532
503999365,29cyclictest0-21swapper/319:30:163
503999365,29cyclictest0-21swapper/319:20:383
503999363,31cyclictest24883-21stress21:45:153
503999363,30cyclictest25295-21/usr/sbin/munin19:55:103
503999362,32cyclictest24883-21stress23:42:593
5022993616,18cyclictest0-21swapper/021:05:060
5022993612,21cyclictest0-21swapper/022:36:550
5022993612,21cyclictest0-21swapper/022:36:550
5022993612,14cyclictest0-21swapper/023:16:050
32022365,11sleep00-21swapper/020:18:080
270752364,14sleep10-21swapper/119:59:041
248002365,11sleep00-21swapper/019:52:050
246062364,11sleep10-21swapper/121:07:381
225132365,13sleep20-21swapper/219:45:302
97812355,14sleep20-21swapper/220:34:382
97352355,14sleep20-21swapper/219:16:182
51582355,13sleep00-21swapper/020:20:400
503999358,25cyclictest0-21swapper/319:52:083
503999356,26cyclictest0-21swapper/323:35:023
503999355,29cyclictest0-21swapper/320:25:163
503999355,29cyclictest0-21swapper/319:35:073
503999355,28cyclictest0-21swapper/321:00:143
503999355,28cyclictest0-21swapper/320:24:373
503999355,28cyclictest0-21swapper/319:15:033
503999354,29cyclictest0-21swapper/320:15:013
503999354,28cyclictest22919-21taskset21:05:083
503999353,30cyclictest10372-21perl21:50:203
503999353,29cyclictest4165-21grep21:35:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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