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2026-08-29 - 00:19
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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 Fri Aug 28, 2026 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2238727952,22sleep10-21swapper/107:04:461
2095227057,8sleep00-21swapper/007:03:100
98612660,1sleep19826-21munin-run07:58:021
22884993110,20cyclictest0-21swapper/110:55:251
22883993011,14cyclictest100150irq/106-eth1-rx12:32:050
2288399280,3cyclictest0-21swapper/012:17:480
22884992724,2cyclictest1199-21runrttasks09:50:171
22884992710,16cyclictest0-21swapper/111:16:521
2288499262,21cyclictest0-21swapper/112:29:241
22883992624,1cyclictest18482-21/usr/sbin/munin09:28:020
2288399260,15cyclictest0-21swapper/009:03:130
22884992510,15cyclictest0-21swapper/112:01:171
22883992519,5cyclictest9505-21ssh10:47:350
22883992514,7cyclictest27507-21ssh09:39:010
22883992510,13cyclictest0-21swapper/008:36:070
22884992418,5cyclictest32693-21apache211:23:411
22883992420,3cyclictest20213-21ssh12:36:470
22883992419,4cyclictest636-21nscd09:53:330
22883992418,4cyclictest32693-21apache211:18:150
22883992418,2cyclictest7-21ksoftirqd/009:43:150
22883992416,4cyclictest32693-21apache212:26:330
22883992411,8cyclictest0-21swapper/010:58:190
2288399240,20cyclictest32102-21perl10:33:140
2288499235,17cyclictest0-21swapper/109:37:541
2288499232,16cyclictest0-21swapper/111:19:341
22884992312,7cyclictest100350irq/108-eth1-tx10:31:101
2288499230,22cyclictest32400-21kworker/1:108:25:121
22883992314,7cyclictest636-21nscd10:24:440
22883992311,8cyclictest649-21nscd07:46:370
22883992310,4cyclictest0-21swapper/009:33:020
22883992310,1cyclictest0-21swapper/010:08:090
2288399230,1cyclictest0-21swapper/011:59:470
2288499225,11cyclictest0-21swapper/112:13:151
22884992221,0cyclictest0-21swapper/111:48:191
22884992218,3cyclictest32693-21apache211:34:101
22884992214,3cyclictest0-21swapper/112:05:071
22883992214,4cyclictest32718-21apache210:21:360
22883992213,4cyclictest0-21swapper/011:08:090
2288399220,1cyclictest21333-21chrt11:51:190
2288399220,14cyclictest0-21swapper/008:47:200
2288499215,11cyclictest0-21swapper/107:43:151
22884992121,0cyclictest0-21swapper/110:40:131
22884992118,1cyclictest32693-21apache211:09:251
22884992113,4cyclictest1199-21runrttasks09:30:451
22884992110,5cyclictest0-21swapper/108:08:141
2288399215,8cyclictest0-21swapper/009:13:200
2288399214,13cyclictest0-21swapper/011:46:320
2288399212,18cyclictest0-21swapper/009:59:470
22883992120,1cyclictest32718-21apache211:25:500
22883992115,2cyclictest3622-21latency_hist12:13:020
22883992110,3cyclictest0-21swapper/009:49:510
2288399210,11cyclictest0-21swapper/007:33:020
1011122110,0sleep10-21swapper/109:14:301
876222010,0sleep10-21swapper/110:45:431
2469722010,0sleep10-21swapper/110:22:591
2288499206,11cyclictest0-21swapper/108:58:151
2288499205,11cyclictest0-21swapper/108:38:191
2288499204,9cyclictest0-21swapper/107:08:171
2288499203,11cyclictest11382-21apache207:28:131
22884992020,0cyclictest0-21swapper/112:24:541
22884992019,1cyclictest32693-21apache207:40:401
22884992019,1cyclictest11409-21apache207:27:341
22884992018,1cyclictest24-21ksoftirqd/110:58:211
22884992018,0cyclictest22881-21cyclictest10:13:231
22884992016,2cyclictest231ktimersoftd/111:28:171
22884992010,2cyclictest0-21swapper/108:33:141
2288499200,2cyclictest0-21swapper/110:33:461
2288499200,10cyclictest0-21swapper/107:33:191
2288399205,10cyclictest0-21swapper/007:58:200
2288399204,10cyclictest0-21swapper/012:22:530
2288399203,10cyclictest0-21swapper/009:28:140
2288399202,11cyclictest0-21swapper/008:23:220
22883992018,1cyclictest81ktimersoftd/011:39:280
22883992013,3cyclictest7-21ksoftirqd/009:18:140
22883992010,7cyclictest0-21swapper/010:38:140
932121910,0sleep10-21swapper/109:59:431
2288499195,8cyclictest0-21swapper/112:33:201
2288499195,11cyclictest6159-21apache_processe07:48:131
2288499194,11cyclictest0-21swapper/108:43:141
22884991916,3cyclictest802-21apache208:02:301
22884991916,2cyclictest21495-21/usr/sbin/munin08:28:171
22884991915,3cyclictest22881-21cyclictest10:23:201
22884991910,6cyclictest0-21swapper/108:48:141
22884991910,5cyclictest0-21swapper/112:22:001
22884991910,4cyclictest0-21swapper/111:38:491
22884991910,4cyclictest0-21swapper/109:03:181
22884991910,3cyclictest0-21swapper/112:08:121
2288399196,8cyclictest0-21swapper/007:23:160
2288399194,10cyclictest0-21swapper/010:30:430
2288399193,7cyclictest0-21swapper/011:13:150
22883991919,0cyclictest0-21swapper/011:06:550
22883991911,1cyclictest0-21swapper/009:10:220
22883991910,5cyclictest0-21swapper/011:37:080
22883991910,4cyclictest0-21swapper/010:17:140
22883991910,1cyclictest0-21swapper/007:28:130
2288399190,16cyclictest0-21swapper/008:48:460
2288399190,13cyclictest0-21swapper/007:18:210
2288499185,7cyclictest0-21swapper/111:43:111
2288499184,8cyclictest0-21swapper/109:18:211
22884991813,2cyclictest0-21swapper/110:48:211
22884991812,5cyclictest0-21swapper/111:04:141
22884991810,4cyclictest0-21swapper/109:23:171
22884991810,4cyclictest0-21swapper/108:18:131
22884991810,3cyclictest0-21swapper/109:40:191
22884991810,3cyclictest0-21swapper/108:03:151
22884991810,2cyclictest0-21swapper/111:55:521
22884991810,2cyclictest0-21swapper/108:13:141
2288399187,6cyclictest0-21swapper/010:53:120
2288399184,9cyclictest0-21swapper/008:53:150
2288399184,8cyclictest0-21swapper/007:48:180
2288399184,2cyclictest4362-21diskmemload11:53:140
22883991813,4cyclictest802-21apache208:14:010
22883991810,2cyclictest0-21swapper/012:04:380
22883991810,2cyclictest0-21swapper/008:03:140
22883991810,2cyclictest0-21swapper/007:38:150
2288499174,8cyclictest0-21swapper/109:43:151
2288499174,10cyclictest0-21swapper/107:18:151
2288499173,10cyclictest0-21swapper/109:53:171
22884991713,2cyclictest32693-21apache210:08:351
22884991711,5cyclictest19311-21kworker/1:007:14:541
22884991711,2cyclictest0-21swapper/109:12:161
22884991710,3cyclictest0-21swapper/110:03:291
2288399175,8cyclictest0-21swapper/007:53:130
2288399172,7cyclictest0-21swapper/010:48:200
22883991716,0cyclictest7-21ksoftirqd/008:38:200
22883991710,3cyclictest0-21swapper/011:31:200
22883991710,0cyclictest0-21swapper/010:04:230
22884991610,3cyclictest0-21swapper/108:53:201
22883991613,2cyclictest7-21ksoftirqd/008:08:180
22883991610,4cyclictest0-21swapper/007:13:130
22883991610,2cyclictest0-21swapper/008:18:130
2288399152,7cyclictest0-21swapper/007:08:110
22883991515,0cyclictest0-21swapper/008:28:190
22883991412,1cyclictest0-21swapper/008:58:500
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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