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2026-01-07 - 16:16
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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 100 highest latencies:
System rackcslot2.osadl.org (updated Wed Jan 07, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
171727158,8sleep10-21swapper/107:07:561
184026452,7sleep00-21swapper/007:09:120
2083993710,4cyclictest0-21swapper/111:26:121
982423110,5sleep10-21swapper/107:30:041
2083993110,20cyclictest0-21swapper/111:55:521
208399310,9cyclictest0-21swapper/112:00:071
55132300,28sleep05647-21python08:40:110
208399291,8cyclictest10595-21/usr/sbin/munin08:55:041
2082992927,1cyclictest81ktimersoftd/012:13:220
2082992927,1cyclictest81ktimersoftd/012:13:220
2082992826,1cyclictest7-21ksoftirqd/007:19:510
2082992821,7cyclictest0-21swapper/009:02:300
2082992810,14cyclictest0-21swapper/009:13:580
208399272,11cyclictest0-21swapper/107:42:121
208399271,1cyclictest0-21swapper/110:23:001
2082992725,1cyclictest0-21swapper/009:47:480
208299270,1cyclictest10502-21expr11:05:040
208399266,11cyclictest22842-21munin-run10:39:521
208399261,9cyclictest0-21swapper/112:38:381
2082992611,1cyclictest0-21swapper/012:35:250
2082992610,11cyclictest0-21swapper/009:36:260
2083992525,0cyclictest0-21swapper/110:16:511
2083992515,8cyclictest11922-21apache210:54:181
2083992510,1cyclictest0-21swapper/110:41:591
208399250,10cyclictest16054-21diskmemload11:50:571
2082992510,5cyclictest0-21swapper/011:15:040
208399244,4cyclictest0-21swapper/109:34:041
2083992422,1cyclictest6758-21df08:45:021
2083992420,2cyclictest11942-21apache211:18:141
2083992419,4cyclictest11942-21apache211:29:561
2083992415,5cyclictest0-21swapper/107:35:091
2083992410,6cyclictest0-21swapper/111:04:501
2083992410,3cyclictest0-21swapper/107:45:011
208399240,8cyclictest0-21swapper/111:19:531
2082992424,0cyclictest0-21swapper/009:21:480
2082992417,5cyclictest11942-21apache210:57:080
2082992412,7cyclictest0-21swapper/010:22:150
208399234,10cyclictest0-21swapper/109:50:111
2083992314,8cyclictest30163-21ssh09:25:511
208399231,11cyclictest0-21swapper/112:05:071
2082992318,3cyclictest11942-21apache209:57:230
2082992311,6cyclictest0-21swapper/009:25:080
2082992310,6cyclictest0-21swapper/010:37:250
2082992310,2cyclictest0-21swapper/011:56:540
2083992219,3cyclictest705-21ntpd09:23:261
2083992218,3cyclictest705-21ntpd12:30:061
2083992216,2cyclictest231ktimersoftd/109:44:231
2083992210,9cyclictest0-21swapper/109:45:261
208399220,5cyclictest6013-21runrttasks09:36:071
208299224,13cyclictest2935-21kworker/u4:209:52:040
2082992221,0cyclictest0-21swapper/009:34:440
2082992217,4cyclictest11922-21apache211:14:120
2082992210,4cyclictest0-21swapper/012:28:270
2082992210,3cyclictest0-21swapper/009:43:030
2083992120,0cyclictest802-21apache209:04:351
2083992120,0cyclictest0-21swapper/111:45:141
208399211,9cyclictest0-21swapper/112:20:151
2083992119,1cyclictest705-21ntpd07:11:291
2083992119,1cyclictest11942-21apache210:10:271
2083992119,1cyclictest0-21swapper/108:20:051
2083992114,5cyclictest11942-21apache210:01:121
2083992114,5cyclictest11922-21apache210:31:201
2083992112,6cyclictest100350irq/108-eth1-tx11:40:391
208399211,11cyclictest0-21swapper/108:05:051
2083992110,7cyclictest0-21swapper/110:25:091
2083992110,6cyclictest0-21swapper/107:50:081
2083992110,5cyclictest0-21swapper/109:15:371
2083992110,3cyclictest0-21swapper/109:58:091
208299219,7cyclictest705-21ntpd08:20:090
208299217,10cyclictest0-21swapper/007:38:260
208299214,5cyclictest636-21nscd11:00:520
2082992121,0cyclictest0-21swapper/009:18:310
2082992115,5cyclictest11942-21apache210:09:490
2082992110,5cyclictest0-21swapper/012:24:480
2082992110,3cyclictest0-21swapper/011:49:560
2082992110,3cyclictest0-21swapper/010:41:070
2082992110,0cyclictest0-21swapper/011:41:320
208299210,2cyclictest32016-21ntp_states08:25:090
208299210,21cyclictest0-21swapper/008:47:540
208399203,11cyclictest0-21swapper/110:05:141
208399203,11cyclictest0-21swapper/107:20:071
208399203,10cyclictest0-21swapper/111:10:081
2083992019,1cyclictest231ktimersoftd/110:49:381
2083992014,4cyclictest1199-21runrttasks08:52:091
2083992014,3cyclictest0-21swapper/109:10:061
208399201,1cyclictest2543-21apache_processe10:55:041
2083992010,6cyclictest0-21swapper/111:05:041
2083992010,6cyclictest0-21swapper/108:35:041
2083992010,4cyclictest0-21swapper/112:10:031
2083992010,4cyclictest0-21swapper/112:10:031
2083992010,4cyclictest0-21swapper/108:00:051
2083992010,2cyclictest0-21swapper/108:15:041
208299209,9cyclictest0-21swapper/007:46:260
208299209,10cyclictest0-21swapper/011:39:290
2082992018,1cyclictest30885-21/usr/sbin/munin10:50:110
2082992014,5cyclictest11942-21apache211:46:220
2082992012,2cyclictest30887-21kworker/u4:210:16:100
2082992010,7cyclictest0-21swapper/010:27:220
2082992010,4cyclictest0-21swapper/012:30:030
2082992010,4cyclictest0-21swapper/012:05:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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