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2026-07-13 - 23:32
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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 376 highest latencies:
System rackcslot2.osadl.org (updated Mon Jul 13, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
467027751,21sleep10-21swapper/107:05:291
198452690,1sleep019842-21seq09:08:420
494526857,7sleep00-21swapper/007:08:220
81092650,0sleep10-21swapper/111:33:391
14832650,0sleep01485-21rm11:24:560
5134993735,1cyclictest0-21swapper/010:51:510
5135993636,0cyclictest0-21swapper/107:09:391
5135993210,2cyclictest18141-21kworker/u4:109:53:111
5134993028,1cyclictest0-21swapper/010:07:480
513599290,27cyclictest0-21swapper/110:05:281
5135992810,6cyclictest0-21swapper/109:28:411
5134992828,0cyclictest0-21swapper/007:29:460
5134992810,17cyclictest0-21swapper/009:39:030
513599270,0cyclictest0-21swapper/110:21:201
5134992710,3cyclictest0-21swapper/011:18:470
5135992621,4cyclictest14984-21apache211:50:401
5134992623,1cyclictest0-21swapper/011:47:200
5135992511,8cyclictest0-21swapper/111:03:371
5135992510,9cyclictest0-21swapper/111:14:381
5135992510,10cyclictest100250irq/107-eth1-rx12:12:171
5135992510,0cyclictest0-21swapper/110:13:341
513599250,21cyclictest19068-21taskset09:47:041
5134992522,2cyclictest14984-21apache212:01:290
5134992510,5cyclictest100250irq/107-eth1-rx09:20:350
5134992510,5cyclictest100250irq/107-eth1-rx09:20:350
5135992410,1cyclictest0-21swapper/111:58:331
5134992418,5cyclictest0-21swapper/007:38:270
5134992410,12cyclictest0-21swapper/012:20:580
513499240,7cyclictest26060-21ssh09:15:480
513499240,23cyclictest0-21swapper/009:51:200
513599239,12cyclictest0-21swapper/107:26:371
513599234,14cyclictest0-21swapper/111:43:381
5135992323,0cyclictest0-21swapper/112:06:211
5135992317,5cyclictest24479-21snmpd10:33:041
5135992312,6cyclictest0-21swapper/110:40:561
5135992312,10cyclictest0-21swapper/112:26:481
5135992310,4cyclictest0-21swapper/111:20:161
5135992310,4cyclictest0-21swapper/110:53:581
5134992320,2cyclictest14984-21apache210:57:400
5134992317,4cyclictest14958-21apache211:04:300
5134992310,8cyclictest14984-21apache211:49:160
5135992222,0cyclictest0-21swapper/108:48:491
5135992210,6cyclictest0-21swapper/112:31:051
5135992210,3cyclictest0-21swapper/112:14:111
5135992210,2cyclictest0-21swapper/110:08:421
513499224,11cyclictest0-21swapper/009:53:460
5134992210,7cyclictest0-21swapper/010:00:240
5134992210,1cyclictest0-21swapper/012:36:120
5134992210,0cyclictest0-21swapper/010:11:090
513599218,4cyclictest11770-21kworker/1:009:38:271
513599216,10cyclictest24054-1kworker/u5:209:13:471
513599214,9cyclictest0-21swapper/109:08:441
5135992119,2cyclictest0-21swapper/111:24:061
5135992116,4cyclictest11770-21kworker/1:010:33:571
5135992110,6cyclictest0-21swapper/108:08:431
5135992110,5cyclictest0-21swapper/108:28:371
5135992110,2cyclictest0-21swapper/108:03:381
513499215,8cyclictest0-21swapper/012:13:380
513499215,11cyclictest0-21swapper/008:48:280
513499214,16cyclictest14912-21kworker/0:209:26:340
513499213,8cyclictest0-21swapper/012:10:450
513499213,4cyclictest0-21swapper/010:31:500
513499212,18cyclictest5826-21kworker/0:011:02:060
5134992118,2cyclictest636-21nscd10:25:000
5134992116,2cyclictest5132-21cyclictest12:06:460
513499211,3cyclictest0-21swapper/010:16:110
5134992110,3cyclictest0-21swapper/011:16:270
2652422110,0sleep00-21swapper/011:56:340
774222010,0sleep17752-21ssh09:33:341
513599205,4cyclictest947-21sendmail-mta08:58:421
5135992013,4cyclictest0-21swapper/109:53:381
5135992012,4cyclictest0-21swapper/107:38:471
5135992010,7cyclictest0-21swapper/111:12:051
5135992010,6cyclictest0-21swapper/110:44:031
5135992010,5cyclictest0-21swapper/108:33:391
5135992010,3cyclictest0-21swapper/112:33:391
5135992010,3cyclictest0-21swapper/107:53:381
513499209,8cyclictest9356-21latency_hist08:43:260
513499206,8cyclictest0-21swapper/007:13:410
513499204,9cyclictest0-21swapper/008:43:380
513499204,8cyclictest0-21swapper/011:28:460
513499204,10cyclictest0-21swapper/010:20:480
513499203,11cyclictest0-21swapper/010:43:460
513499203,11cyclictest0-21swapper/007:43:430
5134992017,1cyclictest30733-21hddtemp_smartct08:13:410
5134992014,5cyclictest579-21cron07:24:260
5134992010,5cyclictest0-21swapper/008:19:320
5134992010,4cyclictest0-21swapper/009:33:270
5134992010,4cyclictest0-21swapper/009:29:200
5134992010,4cyclictest0-21swapper/009:03:370
513599193,8cyclictest0-21swapper/107:13:481
513599192,8cyclictest0-21swapper/108:53:431
513599192,11cyclictest0-21swapper/108:23:371
5135991917,1cyclictest14984-21apache209:18:591
5135991917,1cyclictest14984-21apache209:18:591
5135991910,5cyclictest0-21swapper/111:39:381
5135991910,5cyclictest0-21swapper/107:28:381
5135991910,3cyclictest0-21swapper/108:13:421
5135991910,2cyclictest0-21swapper/109:58:571
5135991910,1cyclictest0-21swapper/112:20:521
5135991910,1cyclictest0-21swapper/111:31:271
513599190,14cyclictest0-21swapper/109:23:341
513499197,8cyclictest0-21swapper/008:23:440
513499195,7cyclictest0-21swapper/008:33:470
513499194,7cyclictest0-21swapper/007:08:420
5134991917,1cyclictest21429-21ls07:48:430
5134991910,4cyclictest0-21swapper/007:58:450
5134991910,3cyclictest0-21swapper/009:43:370
2589321910,0sleep10-21swapper/111:55:151
1377621910,0sleep10-21swapper/110:59:501
1173621910,0sleep00-21swapper/011:38:390
513599184,8cyclictest0-21swapper/107:18:371
513599182,11cyclictest0-21swapper/110:52:451
5135991810,2cyclictest0-21swapper/108:38:351
513499184,7cyclictest0-21swapper/008:28:480
513499184,13cyclictest0-21swapper/012:23:450
5134991811,4cyclictest14958-21apache212:30:500
5134991810,6cyclictest0-21swapper/011:33:390
5134991810,6cyclictest0-21swapper/011:12:140
5135991710,5cyclictest0-21swapper/108:20:211
5135991710,3cyclictest0-21swapper/108:01:491
5135991710,2cyclictest0-21swapper/110:23:461
5134991713,3cyclictest31632-21apache207:19:060
5134991713,3cyclictest0-21swapper/010:35:070
5134991711,5cyclictest0-21swapper/010:40:520
5134991710,3cyclictest0-21swapper/007:33:260
513599168,1cyclictest0-21swapper/107:33:381
5135991610,4cyclictest0-21swapper/107:43:501
5135991610,2cyclictest0-21swapper/108:43:391
5135991610,1cyclictest0-21swapper/107:48:451
513499164,8cyclictest0-21swapper/007:53:450
513499164,11cyclictest14912-21kworker/0:208:56:260
5134991610,4cyclictest0-21swapper/008:08:450
5134991610,3cyclictest0-21swapper/008:03:380
5135991510,3cyclictest0-21swapper/109:03:391
513499156,2cyclictest15550-21diskstats08:58:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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