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2026-04-17 - 21:47
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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 Fri Apr 17, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
235062720,0sleep10-21swapper/112:19:531
3272127150,8sleep10-21swapper/107:05:541
207112690,0sleep00-21swapper/012:16:490
114512660,1sleep10-21swapper/110:34:001
47926553,8sleep00-21swapper/007:08:100
240722610,0sleep00-21swapper/009:19:570
80799310,30cyclictest75892sleep111:13:501
80699311,29cyclictest10665-21kworker/0:107:36:150
80699291,27cyclictest0-21swapper/011:54:190
80699290,28cyclictest0-21swapper/010:18:150
806992827,1cyclictest0-21swapper/008:15:520
807992719,4cyclictest10681-21apache211:29:521
80699271,25cyclictest10665-21kworker/0:108:04:530
807992625,1cyclictest0-21swapper/112:10:291
806992620,4cyclictest22708-21/usr/sbin/munin10:04:230
807992518,5cyclictest10651-21apache211:42:471
807992510,8cyclictest0-21swapper/111:35:541
80799250,13cyclictest0-21swapper/107:59:261
80699257,18cyclictest10665-21kworker/0:108:23:150
80699256,12cyclictest20155-21cron07:59:090
807992419,4cyclictest16365-21munin-node09:21:271
807992417,5cyclictest10681-21apache209:27:021
807992413,6cyclictest100250irq/107-eth1-rx11:56:451
80799241,22cyclictest4388-21kworker/1:110:04:041
80799241,22cyclictest0-21swapper/110:22:371
807992411,5cyclictest0-21swapper/111:04:261
80799240,23cyclictest0-21swapper/112:31:341
80799240,14cyclictest0-21swapper/109:14:251
80699240,21cyclictest9124-21ls11:14:280
80799236,11cyclictest0-21swapper/107:14:261
80799235,10cyclictest30425-21/usr/sbin/munin11:44:271
807992322,1cyclictest0-21swapper/111:49:431
807992320,2cyclictest804-21cyclictest12:24:301
807992310,0cyclictest0-21swapper/112:06:481
80799230,22cyclictest15595-21/usr/sbin/munin09:09:251
80799230,22cyclictest0-21swapper/108:07:061
806992321,1cyclictest10009-21ssh09:45:300
806992321,1cyclictest0-21swapper/009:09:460
806992319,3cyclictest10651-21apache211:30:060
806992319,3cyclictest10651-21apache211:11:230
806992310,6cyclictest0-21swapper/011:48:430
806992310,6cyclictest0-21swapper/010:24:190
806992310,6cyclictest0-21swapper/007:27:290
80699230,17cyclictest0-21swapper/012:20:540
80799226,9cyclictest0-21swapper/108:24:251
807992220,1cyclictest12195-21df09:49:201
807992220,1cyclictest0-21swapper/112:03:301
807992210,8cyclictest0-21swapper/108:35:361
807992210,7cyclictest0-21swapper/108:19:231
807992210,3cyclictest0-21swapper/111:24:251
80699228,6cyclictest8180-21/usr/sbin/munin10:29:270
806992221,1cyclictest10681-21apache209:33:420
80699221,18cyclictest5424-21kworker/0:212:13:150
806992210,7cyclictest0-21swapper/011:20:170
80799218,6cyclictest0-21swapper/110:26:271
80799215,8cyclictest0-21swapper/111:19:251
80799213,12cyclictest0-21swapper/108:59:281
807992119,2cyclictest100150irq/106-eth1-rx10:06:281
807992117,2cyclictest0-21swapper/109:42:111
806992120,1cyclictest10651-21apache210:02:190
806992115,3cyclictest0-21swapper/008:49:450
806992112,5cyclictest100150irq/106-eth1-rx10:11:240
806992110,7cyclictest0-21swapper/011:27:320
806992110,5cyclictest0-21swapper/008:58:290
807992012,6cyclictest802-21apache212:34:131
807992012,6cyclictest100250irq/107-eth1-rx09:34:231
807992010,5cyclictest0-21swapper/107:19:221
807992010,4cyclictest0-21swapper/108:09:301
807992010,3cyclictest0-21swapper/107:55:281
807992010,3cyclictest0-21swapper/107:24:211
80699203,11cyclictest0-21swapper/009:04:220
806992019,1cyclictest0-21swapper/009:35:130
806992013,2cyclictest25942-21taskset09:24:140
806992011,8cyclictest25838-21cpuspeed_turbos11:39:200
806992010,5cyclictest0-21swapper/011:37:210
806992010,4cyclictest0-21swapper/012:24:280
806992010,4cyclictest0-21swapper/010:46:050
806992010,4cyclictest0-21swapper/009:15:100
806992010,2cyclictest0-21swapper/010:35:160
1977122010,0sleep10-21swapper/112:14:511
1709022010,0sleep00-21swapper/009:55:020
80799197,7cyclictest0-21swapper/107:49:211
80799194,8cyclictest0-21swapper/108:14:281
80799193,6cyclictest15443-21apache_volume10:39:201
80799192,10cyclictest0-21swapper/109:04:261
807991919,0cyclictest0-21swapper/109:30:571
807991918,0cyclictest4388-21kworker/1:110:59:221
80699192,10cyclictest0-21swapper/010:54:240
80699191,13cyclictest0-21swapper/007:59:220
806991910,6cyclictest636-21nscd10:51:000
806991910,5cyclictest0-21swapper/007:39:270
806991910,4cyclictest0-21swapper/010:23:000
806991910,0cyclictest0-21swapper/010:39:300
80699190,17cyclictest10665-21kworker/0:108:25:470
250421910,1sleep00-21swapper/007:13:130
2035121910,0sleep10-21swapper/110:44:371
1324021910,0sleep10-21swapper/110:34:531
807991816,1cyclictest802-21apache207:34:431
807991814,3cyclictest4388-21kworker/1:109:54:261
807991813,4cyclictest0-21swapper/108:32:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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