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2026-09-11 - 23:42
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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 792 highest latencies:
System rackcslot2.osadl.org (updated Fri Sep 11, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2900527355,8sleep10-21swapper/107:04:061
245402720,2sleep12955399cyclictest08:18:081
2900427054,8sleep00-21swapper/007:04:050
301542690,1sleep1636-21nscd11:53:111
179782690,1sleep00-21swapper/009:17:070
263542660,1sleep00-21swapper/012:34:250
148392640,0sleep10-21swapper/107:53:081
29553992910,17cyclictest0-21swapper/112:18:181
29553992710,3cyclictest0-21swapper/110:03:061
2955399270,23cyclictest0-21swapper/110:08:401
29552992725,1cyclictest7-21ksoftirqd/007:37:550
29552992710,0cyclictest0-21swapper/010:12:050
2955299270,6cyclictest5860-21ssh12:04:570
29553992624,1cyclictest0-21swapper/110:47:481
29553992610,5cyclictest0-21swapper/109:27:421
29552992610,14cyclictest0-21swapper/011:05:320
29553992519,4cyclictest7004-21apache210:34:131
29553992510,2cyclictest0-21swapper/109:47:571
29552992523,1cyclictest81ktimersoftd/010:14:320
2955299250,3cyclictest0-21swapper/009:03:320
2955299250,2cyclictest0-21swapper/010:58:120
29553992421,2cyclictest7004-21apache210:53:581
29553992418,1cyclictest22969-1kworker/u5:112:33:331
29553992411,8cyclictest1199-21runrttasks10:38:121
2955299242,21cyclictest0-21swapper/011:50:020
29552992415,5cyclictest0-21swapper/011:38:080
2955399239,4cyclictest7004-21apache211:33:071
29553992321,1cyclictest0-21swapper/111:03:131
29553992319,3cyclictest599-21avahi-daemon12:32:431
2955299235,13cyclictest413-21awk08:38:150
29552992317,5cyclictest6982-21apache210:21:370
29552992317,2cyclictest17053-21cstates10:48:080
29552992316,6cyclictest0-21swapper/011:28:000
29552992310,4cyclictest0-21swapper/012:14:500
2955299230,1cyclictest32106-21rm11:08:410
2955299230,19cyclictest0-21swapper/012:32:540
2955399226,9cyclictest0-21swapper/109:18:111
2955399225,7cyclictest0-21swapper/110:17:031
2955399223,11cyclictest0-21swapper/111:58:071
29553992222,0cyclictest0-21swapper/108:28:501
29553992218,4cyclictest6982-21apache208:08:151
29553992218,3cyclictest599-21avahi-daemon11:32:181
29553992217,3cyclictest7004-21apache210:19:571
2955399221,16cyclictest0-21swapper/109:38:091
29553992210,6cyclictest0-21swapper/107:48:061
29552992214,5cyclictest24479-21snmpd11:34:520
29552992212,9cyclictest650-21nscd09:09:070
2955299220,8cyclictest0-21swapper/010:53:120
29553992119,1cyclictest9860-21python11:23:131
29553992117,2cyclictest26067-21irqstats09:28:131
29553992110,9cyclictest0-21swapper/111:50:221
29553992110,7cyclictest0-21swapper/111:18:151
2955299219,9cyclictest0-21swapper/008:08:480
2955299218,6cyclictest0-21swapper/010:43:120
29552992110,8cyclictest0-21swapper/011:13:280
29552992110,4cyclictest0-21swapper/009:48:160
29552992110,3cyclictest0-21swapper/011:18:040
2955399202,17cyclictest16845-21kworker/1:212:15:141
29553992018,1cyclictest0-21swapper/110:48:071
2955399201,4cyclictest0-21swapper/109:56:291
2955399201,4cyclictest0-21swapper/109:56:291
29553992010,3cyclictest0-21swapper/109:58:141
29553992010,3cyclictest0-21swapper/107:40:031
29553992010,2cyclictest0-21swapper/108:45:131
2955399200,8cyclictest26972-21cat11:02:501
2955399200,20cyclictest0-21swapper/111:11:111
2955399200,19cyclictest16845-21kworker/1:212:12:541
2955399200,15cyclictest0-21swapper/111:39:441
2955299205,7cyclictest0-21swapper/012:02:560
2955299202,12cyclictest0-21swapper/007:43:140
29552992018,1cyclictest7004-21apache210:35:580
29552992017,2cyclictest0-21swapper/009:54:240
29552992017,2cyclictest0-21swapper/009:54:240
29552992012,7cyclictest6982-21apache209:33:060
29552992011,3cyclictest30315-21ntpdc07:08:130
29552992011,3cyclictest0-21swapper/012:23:140
29552992010,3cyclictest0-21swapper/008:43:060
29552992010,0cyclictest0-21swapper/009:59:240
2955299200,6cyclictest0-21swapper/009:45:260
2955299200,20cyclictest0-21swapper/010:30:520
295462200,1sleep00-21swapper/011:53:060
627021910,0sleep10-21swapper/110:32:461
2955399199,6cyclictest32280-21fschecks_time10:23:071
2955399194,10cyclictest0-21swapper/108:58:081
2955399192,10cyclictest0-21swapper/107:13:081
29553991910,5cyclictest0-21swapper/109:34:051
29553991910,3cyclictest0-21swapper/111:14:281
29553991910,3cyclictest0-21swapper/107:33:121
2955299194,6cyclictest0-21swapper/008:33:090
2955299194,11cyclictest0-21swapper/010:23:140
2955299193,10cyclictest0-21swapper/009:28:130
29552991918,1cyclictest6982-21apache212:09:170
29552991918,0cyclictest0-21swapper/010:41:190
29552991915,2cyclictest6982-21apache208:14:560
2955299191,16cyclictest0-21swapper/009:38:090
29552991910,4cyclictest0-21swapper/007:38:110
29552991910,1cyclictest0-21swapper/008:23:060
2955299190,11cyclictest0-21swapper/008:48:130
2018721910,0sleep00-21swapper/010:05:400
2955399186,7cyclictest0-21swapper/107:43:051
2955399185,7cyclictest11029-21diskmemload12:23:371
29553991811,3cyclictest0-21swapper/107:18:061
2955399181,11cyclictest0-21swapper/109:08:061
29553991810,4cyclictest0-21swapper/108:03:161
29553991810,3cyclictest0-21swapper/109:47:341
2955399180,15cyclictest0-21swapper/112:07:521
2955299187,6cyclictest25093-21/usr/sbin/munin08:18:120
2955299186,6cyclictest0-21swapper/011:23:110
2955299185,5cyclictest0-21swapper/007:48:070
2955299183,9cyclictest0-21swapper/007:18:120
2955299183,7cyclictest0-21swapper/008:28:160
29552991810,5cyclictest0-21swapper/008:03:070
29552991810,3cyclictest0-21swapper/008:53:140
29552991810,2cyclictest0-21swapper/007:28:070
7482170,1sleep10-21swapper/108:38:171
445121710,0sleep10-21swapper/107:25:271
2955399175,8cyclictest0-21swapper/107:58:081
29553991714,2cyclictest6982-21apache211:46:351
29553991710,4cyclictest0-21swapper/109:13:221
29553991710,4cyclictest0-21swapper/108:23:121
29553991710,3cyclictest0-21swapper/107:08:141
2955299177,4cyclictest8631-21/usr/sbin/munin08:58:160
2955299175,5cyclictest0-21swapper/007:23:070
2955299171,10cyclictest0-21swapper/007:53:130
29552991710,5cyclictest0-21swapper/007:13:110
29552991710,1cyclictest0-21swapper/012:19:360
29552991710,1cyclictest0-21swapper/009:23:070
29552991710,0cyclictest0-21swapper/011:45:260
2955399162,8cyclictest22945-21/usr/sbin/munin08:13:101
2955399162,8cyclictest0-21swapper/108:33:121
29553991610,4cyclictest0-21swapper/108:55:561
29553991610,3cyclictest0-21swapper/109:03:071
29553991610,3cyclictest0-21swapper/107:28:071
2955399160,9cyclictest0-21swapper/108:48:061
2955299162,8cyclictest0-21swapper/007:58:100
29552991610,2cyclictest0-21swapper/009:22:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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