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2026-08-13 - 00:39
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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 all highest latencies:
System rackcslot2.osadl.org (updated Wed Aug 12, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
945826747,15sleep10-21swapper/107:04:521
951026649,8sleep00-21swapper/007:05:250
313442640,1sleep10-21swapper/108:03:101
9956994210,9cyclictest0-21swapper/010:44:580
9957994010,0cyclictest0-21swapper/109:29:211
9957993131,0cyclictest0-21swapper/110:49:091
9957993129,1cyclictest19776-21apache210:14:051
9957993010,1cyclictest22590-21kworker/u4:012:15:371
995799290,5cyclictest2457-21cron09:28:051
9956992927,1cyclictest0-21swapper/011:44:170
9957992810,0cyclictest0-21swapper/109:22:301
995699284,23cyclictest0-21swapper/009:45:230
995699280,2cyclictest0-21swapper/011:33:480
9956992724,2cyclictest21387-21munin-node12:18:510
9957992610,4cyclictest0-21swapper/111:28:021
995799260,2cyclictest0-21swapper/109:36:371
9956992625,0cyclictest0-21swapper/012:28:210
995699260,25cyclictest0-21swapper/010:00:340
9957992510,4cyclictest0-21swapper/110:20:141
9956992520,4cyclictest19802-21apache210:30:020
9956992510,6cyclictest0-21swapper/009:23:320
9956992510,0cyclictest0-21swapper/010:05:080
995799244,4cyclictest9954-21cyclictest11:11:291
995799241,3cyclictest0-21swapper/111:45:111
995799241,3cyclictest0-21swapper/110:44:001
9957992410,2cyclictest0-21swapper/110:37:291
9957992410,12cyclictest0-21swapper/111:18:131
995799240,17cyclictest0-21swapper/111:34:141
995699242,4cyclictest0-21swapper/009:55:560
9956992421,0cyclictest100250irq/107-eth1-rx10:10:180
9956992414,7cyclictest1960-21ssh09:21:560
995799236,15cyclictest0-21swapper/109:39:431
995799236,14cyclictest0-21swapper/108:38:261
995799235,9cyclictest0-21swapper/109:03:271
995799231,4cyclictest1197-21kworker/u4:212:33:541
9957992312,3cyclictest0-21swapper/111:13:251
9957992310,4cyclictest0-21swapper/109:54:271
995799230,10cyclictest0-21swapper/111:53:271
9956992310,6cyclictest0-21swapper/011:14:150
9957992222,0cyclictest0-21swapper/109:12:521
9957992221,0cyclictest0-21swapper/112:00:591
9957992218,3cyclictest24479-21snmpd11:28:161
9957992216,5cyclictest636-21nscd11:50:451
9957992212,6cyclictest0-21swapper/107:28:221
9957992210,8cyclictest0-21swapper/107:13:221
9957992210,5cyclictest0-21swapper/108:53:281
995799220,0cyclictest0-21swapper/112:24:431
995699221,1cyclictest0-21swapper/011:42:400
9956992210,6cyclictest0-21swapper/008:08:310
9956992210,5cyclictest0-21swapper/011:58:180
995699220,15cyclictest0-21swapper/011:48:280
398922210,2sleep00-21swapper/012:26:240
995799218,10cyclictest0-21swapper/108:03:251
995799214,10cyclictest0-21swapper/108:18:281
995799212,14cyclictest0-21swapper/108:23:231
9957992110,5cyclictest0-21swapper/112:06:471
9957992110,3cyclictest0-21swapper/109:49:021
995799210,5cyclictest0-21swapper/109:14:401
995799210,2cyclictest0-21swapper/110:23:361
995799210,1cyclictest0-21swapper/109:59:531
9956992120,1cyclictest19776-21apache208:03:580
9956992119,2cyclictest19802-21apache211:09:140
9956992117,3cyclictest705-21ntpd11:56:250
9956992113,4cyclictest16108-21sh09:41:220
9956992113,2cyclictest636-21nscd12:07:350
9956992112,4cyclictest0-21swapper/010:13:460
9956992110,7cyclictest0-21swapper/009:08:240
9956992110,6cyclictest0-21swapper/009:03:210
9956992110,5cyclictest0-21swapper/010:53:250
9956992110,4cyclictest20693-21ssh10:33:210
995799207,8cyclictest0-21swapper/111:38:221
995799206,9cyclictest0-21swapper/107:53:261
9957992016,3cyclictest19802-21apache207:38:241
9957992014,3cyclictest9954-21cyclictest10:06:161
9957992010,7cyclictest0-21swapper/111:03:521
9957992010,5cyclictest0-21swapper/107:34:591
9957992010,4cyclictest0-21swapper/107:18:271
995799200,6cyclictest0-21swapper/110:10:501
995799200,0cyclictest0-21swapper/111:00:171
995699205,7cyclictest0-21swapper/010:38:310
995699204,9cyclictest0-21swapper/007:18:480
995699203,16cyclictest0-21swapper/009:30:040
9956992019,1cyclictest0-21swapper/011:20:540
9956992016,2cyclictest705-21ntpd08:14:590
9956992014,3cyclictest0-21swapper/011:05:230
9956992010,6cyclictest0-21swapper/008:58:250
9956992010,1cyclictest0-21swapper/009:33:270
995699200,16cyclictest0-21swapper/011:00:300
995799197,6cyclictest0-21swapper/108:43:211
995799194,8cyclictest0-21swapper/108:33:221
995799193,8cyclictest0-21swapper/108:13:221
995799193,7cyclictest0-21swapper/108:08:261
9957991918,1cyclictest19776-21apache210:41:021
9957991910,3cyclictest0-21swapper/112:30:491
995799190,8cyclictest0-21swapper/108:28:251
995799190,13cyclictest0-21swapper/112:08:241
995699194,7cyclictest0-21swapper/009:48:270
995699193,9cyclictest0-21swapper/008:53:230
9956991918,1cyclictest29036-21apache207:13:300
9956991916,2cyclictest19776-21apache208:21:000
9956991915,4cyclictest19776-21apache212:16:540
9956991910,4cyclictest16990-21ntpdc08:48:280
9956991910,4cyclictest0-21swapper/010:48:230
9956991910,4cyclictest0-21swapper/008:38:300
995799182,14cyclictest0-21swapper/107:43:301
9957991811,1cyclictest231ktimersoftd/112:21:491
9957991810,2cyclictest0-21swapper/110:28:281
995699181,9cyclictest0-21swapper/007:53:220
9956991812,2cyclictest0-21swapper/008:33:210
9956991810,5cyclictest0-21swapper/009:14:100
9956991810,4cyclictest0-21swapper/011:28:210
9956991810,4cyclictest0-21swapper/011:26:340
9956991810,4cyclictest0-21swapper/007:08:260
9956991810,2cyclictest0-21swapper/012:08:320
995799171,3cyclictest0-21swapper/109:47:281
995799171,12cyclictest0-21swapper/108:48:221
9957991710,3cyclictest4068-21ssh10:53:471
995699178,5cyclictest636-21nscd10:19:360
995699176,5cyclictest0-21swapper/007:48:240
995699173,7cyclictest0-21swapper/007:58:250
9956991717,0cyclictest0-21swapper/010:26:040
9956991710,3cyclictest0-21swapper/012:37:110
9956991710,2cyclictest0-21swapper/007:33:250
1152121710,1sleep10-21swapper/107:11:061
9957991610,1cyclictest0-21swapper/108:58:291
995699164,8cyclictest0-21swapper/007:23:250
995699163,12cyclictest19733-21kworker/0:007:40:050
9956991610,3cyclictest0-21swapper/007:28:280
9956991610,2cyclictest0-21swapper/008:43:210
9956991610,2cyclictest0-21swapper/008:23:230
9956991610,0cyclictest0-21swapper/008:29:410
9956991610,0cyclictest0-21swapper/007:46:020
1573321610,1sleep10-21swapper/107:23:141
9957991410,4cyclictest0-21swapper/107:48:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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