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2025-12-11 - 20:53
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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 rackcslot2.osadl.org (updated Thu Dec 11, 2025 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
288026957,8sleep10-21swapper/107:03:171
280826957,8sleep00-21swapper/007:02:320
289112630,0sleep00-21swapper/009:21:050
3381993515,19cyclictest0-21swapper/009:40:160
3382993230,1cyclictest0-21swapper/112:25:421
3381993210,1cyclictest0-21swapper/009:48:450
3381993014,16cyclictest0-21swapper/011:56:240
3381992910,9cyclictest0-21swapper/009:42:470
3382992810,4cyclictest0-21swapper/109:59:461
3382992810,13cyclictest0-21swapper/111:24:151
3382992711,16cyclictest14214-21kworker/1:012:04:061
3381992727,0cyclictest0-21swapper/007:45:070
3382992626,0cyclictest0-21swapper/108:15:581
3382992619,5cyclictest13281-21apache210:12:071
3381992610,0cyclictest0-21swapper/011:22:330
1112922610,2sleep10-21swapper/112:29:431
338299255,18cyclictest14617-21ssh10:26:411
3382992510,0cyclictest0-21swapper/110:50:561
338299250,24cyclictest14718-21ssh12:34:331
338299250,21cyclictest0-21swapper/109:49:161
338299250,1cyclictest13582-21ssh10:24:541
3381992510,9cyclictest0-21swapper/007:18:170
338199250,25cyclictest0-21swapper/008:25:360
338199250,1cyclictest0-21swapper/011:12:230
338199242,21cyclictest0-21swapper/007:56:520
3381992414,7cyclictest4359-21diskmemload09:31:180
3381992411,5cyclictest24375-21kworker/u4:010:42:210
3381992410,8cyclictest0-21swapper/011:16:530
3381992410,3cyclictest0-21swapper/010:57:450
338299236,17cyclictest30636-21kworker/1:009:35:221
3382992318,3cyclictest817-21apache209:42:571
3382992310,8cyclictest0-21swapper/110:54:001
3382992310,6cyclictest27622-21pmu-power08:06:551
3382992310,6cyclictest0-21swapper/111:01:491
3381992322,1cyclictest13281-21apache208:14:230
338199231,3cyclictest0-21swapper/012:01:290
3381992310,5cyclictest0-21swapper/011:42:320
3381992310,4cyclictest0-21swapper/008:53:510
338199230,22cyclictest0-21swapper/008:21:320
338199230,22cyclictest0-21swapper/008:21:320
338199230,18cyclictest0-21swapper/010:52:250
338299225,11cyclictest0-21swapper/112:11:491
3382992221,1cyclictest13281-21apache211:47:381
3382992216,4cyclictest13279-21apache209:27:011
3382992212,8cyclictest13279-21apache211:39:221
3382992210,10cyclictest0-21swapper/110:06:161
338299220,22cyclictest19638-21kworker/1:107:11:421
338199227,12cyclictest0-21swapper/008:01:490
338199223,13cyclictest0-21swapper/011:26:510
3381992218,3cyclictest13281-21apache209:35:370
3381992210,8cyclictest0-21swapper/007:09:260
3381992210,3cyclictest0-21swapper/011:03:190
338199220,15cyclictest2487-21grep12:16:560
161622210,1sleep10-21swapper/110:08:561
338299216,7cyclictest0-21swapper/108:46:551
338299216,6cyclictest0-21swapper/107:36:491
338299213,11cyclictest0-21swapper/112:16:481
3382992120,1cyclictest13281-21apache209:10:541
3382992118,1cyclictest0-21swapper/111:15:571
3382992116,4cyclictest30214-21snmpd10:21:181
3382992116,4cyclictest13279-21apache209:18:361
3382992114,4cyclictest2060-21ssh11:34:021
3382992110,8cyclictest0-21swapper/111:51:571
3382992110,7cyclictest0-21swapper/107:31:551
3382992110,3cyclictest0-21swapper/109:01:511
3382992110,2cyclictest0-21swapper/110:31:501
338199216,6cyclictest0-21swapper/010:11:540
3381992117,2cyclictest13281-21apache211:33:130
3381992116,5cyclictest0-21swapper/007:29:200
3381992110,7cyclictest0-21swapper/012:10:470
338299206,8cyclictest0-21swapper/108:01:551
338299205,6cyclictest13257-21apache207:56:491
338299204,10cyclictest0-21swapper/108:36:581
3382992017,0cyclictest3379-21cyclictest10:43:211
3382992010,8cyclictest0-21swapper/111:56:531
338199205,5cyclictest1530-21ssh10:08:460
338199203,5cyclictest17309-21diskmemload11:36:500
338199203,12cyclictest0-21swapper/008:56:500
338199202,15cyclictest17309-21diskmemload10:32:340
3381992012,6cyclictest30446-21ssh10:04:360
3381992012,6cyclictest13281-21apache209:56:230
3381992011,5cyclictest7245-21cstates10:16:510
3381992010,8cyclictest0-21swapper/007:35:170
3381992010,7cyclictest0-21swapper/009:23:460
3381992010,4cyclictest0-21swapper/009:10:530
1850122010,0sleep10-21swapper/107:42:141
338299193,3cyclictest7409-21ssh10:58:331
3382991919,0cyclictest0-21swapper/109:14:381
3382991915,3cyclictest31889-21cron11:31:381
3382991910,6cyclictest0-21swapper/108:21:501
3382991910,4cyclictest0-21swapper/109:36:491
3382991910,3cyclictest0-21swapper/108:26:491
338299190,0cyclictest18594-21kworker/u4:211:17:541
338199198,8cyclictest17309-21diskmemload10:38:340
338199196,11cyclictest0-21swapper/012:01:590
338199194,12cyclictest0-21swapper/009:01:530
338199193,11cyclictest0-21swapper/010:50:550
3381991917,1cyclictest0-21swapper/009:11:500
338199191,5cyclictest0-21swapper/012:21:440
3381991910,5cyclictest0-21swapper/010:30:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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