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2025-12-08 - 12:43
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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 Mon Dec 08, 2025 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30833211452,56sleep30-21swapper/319:06:453
30870211251,55sleep10-21swapper/119:07:081
3106929466,23sleep20-21swapper/219:09:332
3094028456,23sleep00-21swapper/019:07:580
101452450,1sleep020120-21stress23:13:530
31215994420,21cyclictest0-21swapper/022:01:450
3121599433,37cyclictest20123-21stress23:30:490
3121699426,20cyclictest0-21swapper/100:30:111
3121599423,35cyclictest23814-21modprobe20:05:000
3121599417,32cyclictest0-21swapper/020:50:230
3121599416,31cyclictest20120-21stress21:50:180
3121599414,34cyclictest20123-21stress21:17:250
3121599414,34cyclictest20123-21stress21:17:250
3121599413,4cyclictest20123-21stress21:57:220
3121599413,4cyclictest20123-21stress21:57:220
3121599412,36cyclictest20123-21stress22:56:590
3121599412,35cyclictest20120-21stress00:31:240
31218994014,24cyclictest0-21swapper/321:20:233
3121699407,17cyclictest0-21swapper/100:22:341
3121599408,29cyclictest0-21swapper/023:45:270
3121599408,29cyclictest0-21swapper/023:45:260
3121599406,31cyclictest20123-21stress22:10:270
3121599406,30cyclictest20120-21stress21:31:300
3121599406,29cyclictest20123-21stress23:44:530
3121599406,29cyclictest20123-21stress23:44:530
3121599405,33cyclictest0-21swapper/021:09:230
3121599405,31cyclictest20123-21stress22:25:230
3121599403,3cyclictest20120-21stress22:06:330
3121599403,34cyclictest20120-21stress22:53:240
3121599403,34cyclictest20120-21stress22:42:500
3121599403,34cyclictest20120-21stress21:25:230
3121599402,3cyclictest20123-21stress23:25:520
3121599402,3cyclictest20123-21stress23:25:520
3121599402,3cyclictest20123-21stress23:15:220
3121599402,35cyclictest20123-21stress00:22:350
3121599402,35cyclictest20120-21stress23:53:110
31215994021,17cyclictest0-21swapper/022:30:450
31215994021,17cyclictest0-21swapper/022:30:440
31215994020,17cyclictest0-21swapper/022:46:330
3121599396,30cyclictest0-21swapper/023:55:260
3121599396,30cyclictest0-21swapper/020:25:220
3121599396,30cyclictest0-21swapper/020:25:220
3121599396,29cyclictest20123-21stress21:20:080
3121599396,29cyclictest20123-21stress00:09:560
3121599395,3cyclictest0-21swapper/020:35:240
3121599395,32cyclictest0-21swapper/020:55:140
3121599395,32cyclictest0-21swapper/020:15:360
3121599395,31cyclictest0-21swapper/020:45:160
3121599394,32cyclictest0-21swapper/021:37:410
3121599393,33cyclictest20123-21stress23:03:560
3121599392,3cyclictest20123-21stress23:21:430
3121599392,33cyclictest15234-21/usr/sbin/munin19:45:170
31215993920,16cyclictest0-21swapper/022:35:270
58202385,15sleep20-21swapper/219:21:412
3121899389,26cyclictest0-21swapper/321:17:463
3121899389,26cyclictest0-21swapper/321:17:463
31218993820,15cyclictest0-21swapper/323:12:013
31218993815,20cyclictest0-21swapper/323:45:493
31218993815,20cyclictest0-21swapper/323:45:493
31218993815,20cyclictest0-21swapper/322:37:533
31218993810,25cyclictest0-21swapper/323:01:413
3121599386,28cyclictest20120-21stress23:06:460
3121599386,28cyclictest20120-21stress23:06:460
3121599386,28cyclictest20120-21stress21:10:100
3121599385,3cyclictest0-21swapper/019:55:000
3121599385,31cyclictest0-21swapper/019:26:530
3121599383,3cyclictest20120-21stress22:15:370
3121599383,3cyclictest20120-21stress22:15:370
3121599383,32cyclictest4181-21/usr/sbin/munin19:20:140
3121599383,32cyclictest20120-21stress21:42:300
31215993810,25cyclictest0-21swapper/000:00:030
109702385,12sleep10-21swapper/120:47:201
79612375,17sleep10-21swapper/119:25:521
323672375,16sleep10-21swapper/120:21:541
31218993722,13cyclictest0-21swapper/300:38:563
31218993720,15cyclictest0-21swapper/322:40:303
31218993720,15cyclictest0-21swapper/321:14:563
31218993714,21cyclictest0-21swapper/321:26:003
31218993714,21cyclictest0-21swapper/300:15:573
31218993713,21cyclictest0-21swapper/321:40:583
31218993710,24cyclictest0-21swapper/322:13:013
31218993710,24cyclictest0-21swapper/321:52:493
3121699376,12cyclictest0-21swapper/121:50:341
3121599376,28cyclictest20120-21stress00:16:380
3121599376,27cyclictest20120-21stress00:25:440
3121599374,16cyclictest0-21swapper/019:15:180
3121599374,16cyclictest0-21swapper/019:14:350
3121599374,14cyclictest0-21swapper/020:21:290
3121599372,5cyclictest21048-21timerwakeupswit19:55:250
31215993719,15cyclictest0-21swapper/000:10:130
21362375,15sleep20-21swapper/220:27:132
21362375,15sleep20-21swapper/220:27:132
124562375,15sleep20-21swapper/219:36:512
111622375,12sleep20-21swapper/220:49:382
3121899369,24cyclictest0-21swapper/322:09:233
3121899369,24cyclictest0-21swapper/322:00:143
3121899368,25cyclictest0-21swapper/300:34:413
31218993615,18cyclictest0-21swapper/322:52:113
31218993614,19cyclictest0-21swapper/323:15:053
3121799369,24cyclictest0-21swapper/223:15:352
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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