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2025-12-08 - 08:12
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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 highest latencies:
System rackcslot2.osadl.org (updated Mon Dec 08, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
94952730,2sleep12768099cyclictest00:05:341
101872710,0sleep00-21swapper/021:51:530
2716427048,17sleep10-21swapper/119:03:091
2709126855,8sleep00-21swapper/019:02:260
48162670,1sleep10-21swapper/119:31:391
291372640,0sleep10-21swapper/123:02:041
27680993131,0cyclictest0-21swapper/120:46:511
27680993111,11cyclictest0-21swapper/123:38:031
27679993110,0cyclictest0-21swapper/023:39:020
2768099300,29cyclictest0-21swapper/100:17:431
27680992910,19cyclictest0-21swapper/121:20:011
27680992910,10cyclictest0-21swapper/122:33:021
2768099290,1cyclictest22347-21ssh00:22:481
27679992927,1cyclictest7-21ksoftirqd/020:46:390
2767999291,24cyclictest0-21swapper/023:35:330
27680992824,3cyclictest5202-21kworker/u4:021:41:521
27679992810,1cyclictest0-21swapper/022:51:050
27679992810,0cyclictest0-21swapper/021:49:230
27679992810,0cyclictest0-21swapper/021:49:230
27680992710,12cyclictest0-21swapper/123:31:441
27680992710,10cyclictest0-21swapper/100:14:431
2767999270,0cyclictest0-21swapper/020:29:590
27680992623,1cyclictest231ktimersoftd/123:42:011
27680992610,2cyclictest0-21swapper/122:22:261
2768099260,1cyclictest0-21swapper/122:50:311
27679992624,1cyclictest27700-21/usr/sbin/munin19:07:070
27679992610,13cyclictest0-21swapper/022:27:570
2767999260,9cyclictest0-21swapper/023:06:500
1814222510,1sleep00-21swapper/000:17:000
27680992424,0cyclictest0-21swapper/122:59:181
27680992418,3cyclictest20529-21ssh21:21:521
27680992411,5cyclictest0-21swapper/119:25:431
27679992423,0cyclictest29871-21ssh23:47:430
27679992422,0cyclictest0-21swapper/022:19:370
27679992420,4cyclictest18540-21snmpd00:15:340
27680992322,1cyclictest10889-21apache222:04:391
27680992321,1cyclictest14445-21ssh21:12:131
27680992314,9cyclictest19031-21kworker/1:222:17:571
2768099231,16cyclictest4211-21timerandwakeup23:11:591
27680992310,9cyclictest0-21swapper/122:08:271
2768099230,22cyclictest168-21systemd-journal20:31:391
27679992321,1cyclictest81ktimersoftd/022:56:530
27679992319,4cyclictest0-21swapper/020:53:350
2767999231,4cyclictest0-21swapper/022:05:140
27679992310,0cyclictest0-21swapper/021:30:360
2767999230,22cyclictest0-21swapper/022:52:470
2768099229,6cyclictest0-21swapper/122:11:521
27680992220,1cyclictest0-21swapper/100:00:181
27680992217,2cyclictest0-21swapper/123:30:281
27680992210,6cyclictest0-21swapper/123:55:331
27680992210,0cyclictest0-21swapper/120:44:431
2768099220,9cyclictest0-21swapper/122:41:521
2767999223,8cyclictest0-21swapper/019:41:500
2767999223,10cyclictest0-21swapper/019:51:530
27679992212,4cyclictest5689-21kworker/u4:023:12:380
27679992211,5cyclictest0-21swapper/000:07:570
27679992210,10cyclictest0-21swapper/023:23:480
2768099218,6cyclictest671-21nscd23:47:221
2768099215,12cyclictest0-21swapper/119:36:591
27680992120,0cyclictest0-21swapper/121:50:471
27680992120,0cyclictest0-21swapper/121:50:471
27680992116,2cyclictest231ktimersoftd/120:14:571
27680992115,0cyclictest0-21swapper/123:16:541
2768099211,19cyclictest5202-21kworker/u4:021:11:111
27680992110,8cyclictest0-21swapper/121:52:141
27680992110,7cyclictest0-21swapper/120:22:421
27680992110,4cyclictest0-21swapper/122:51:591
27680992110,4cyclictest0-21swapper/122:28:461
27680992110,3cyclictest0-21swapper/121:27:351
27680992110,3cyclictest0-21swapper/119:32:341
2767999215,5cyclictest3122-21apache_processe23:56:540
27679992121,0cyclictest0-21swapper/021:19:130
27679992119,1cyclictest709-21irqbalance21:34:130
27679992117,3cyclictest10889-21apache222:13:170
2767999211,14cyclictest8884-21diskmemload23:41:570
1598722110,1sleep00-21swapper/021:59:300
27680992016,2cyclictest10905-21apache220:06:561
27680992015,3cyclictest0-21swapper/121:33:101
27680992010,6cyclictest0-21swapper/100:28:291
27680992010,4cyclictest0-21swapper/121:02:031
27680992010,4cyclictest0-21swapper/120:38:001
2768099200,2cyclictest0-21swapper/123:09:281
2767999202,2cyclictest0-21swapper/021:12:160
27679992015,4cyclictest10905-21apache221:06:490
27679992010,5cyclictest0-21swapper/000:26:500
27679992010,3cyclictest0-21swapper/000:33:110
2767999200,14cyclictest0-21swapper/021:42:490
2767999200,0cyclictest0-21swapper/021:25:500
1782722010,0sleep10-21swapper/120:02:331
2768099198,7cyclictest0-21swapper/123:21:561
27680991917,1cyclictest32489-21awk21:36:591
27680991910,5cyclictest0-21swapper/119:51:571
27680991910,4cyclictest0-21swapper/120:31:571
27680991910,3cyclictest0-21swapper/120:16:531
2768099190,18cyclictest0-21swapper/120:56:571
2767999193,9cyclictest0-21swapper/019:26:550
2767999191,1cyclictest0-21swapper/023:27:050
27679991911,3cyclictest97750irq/106-eth1-rx22:43:110
27679991910,7cyclictest0-21swapper/022:37:520
27679991910,5cyclictest0-21swapper/022:09:290
27679991910,5cyclictest0-21swapper/000:03:310
27679991910,4cyclictest0-21swapper/022:24:520
1668521910,0sleep10-21swapper/122:01:151
832321810,0sleep00-21swapper/019:38:540
2768099187,4cyclictest97950irq/108-eth1-tx19:17:031
2768099185,6cyclictest0-21swapper/120:52:021
27680991810,4cyclictest0-21swapper/119:56:531
27680991810,3cyclictest0-21swapper/119:41:531
27680991810,3cyclictest0-21swapper/100:31:511
27679991813,3cyclictest10889-21apache221:01:500
27679991811,4cyclictest0-21swapper/023:02:350
27679991810,6cyclictest0-21swapper/000:21:480
27679991810,4cyclictest0-21swapper/023:16:550
27679991810,3cyclictest0-21swapper/021:36:430
27679991810,3cyclictest0-21swapper/019:11:570
2492421810,0sleep00-21swapper/020:21:590
1787921810,0sleep00-21swapper/020:03:040
2768099173,10cyclictest11495-21grep22:36:591
2767999174,13cyclictest29214-21kworker/0:120:58:330
2767999172,9cyclictest0-21swapper/022:31:590
2767999170,17cyclictest0-21swapper/020:33:510
3125521610,1sleep00-21swapper/020:37:230
2768099166,6cyclictest0-21swapper/119:12:011
2768099161,4cyclictest0-21swapper/119:48:391
2767999169,4cyclictest12481-21cron19:51:390
2767999165,6cyclictest0-21swapper/020:06:530
2767999162,4cyclictest22079-21perf20:16:400
27679991610,6cyclictest0-21swapper/023:52:470
27679991610,6cyclictest0-21swapper/020:48:530
27679991610,6cyclictest0-21swapper/019:33:130
27679991610,1cyclictest0-21swapper/019:57:190
27680991510,2cyclictest0-21swapper/100:06:501
27680991510,1cyclictest28845-21ls19:07:091
2767999156,6cyclictest0-21swapper/019:21:520
2767999140,7cyclictest0-21swapper/019:16:510
27679991310,3cyclictest0-21swapper/020:16:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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