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2026-04-04 - 16:56
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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 Sat Apr 04, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
960927159,8sleep10-21swapper/107:07:501
948226452,8sleep00-21swapper/007:06:310
9926993333,0cyclictest24-21ksoftirqd/111:14:281
9926993331,1cyclictest24-21ksoftirqd/107:34:151
9926993310,1cyclictest0-21swapper/111:02:061
992699330,4cyclictest91rcu_preempt09:49:341
992699311,3cyclictest24-21ksoftirqd/111:40:391
992699310,30cyclictest0-21swapper/109:27:491
9925993131,0cyclictest0-21swapper/012:36:400
992699307,2cyclictest91rcu_preempt10:34:111
9926993028,1cyclictest24-21ksoftirqd/112:29:331
992699300,1cyclictest91rcu_preempt11:38:341
992699300,1cyclictest91rcu_preempt11:38:341
9926992929,0cyclictest24-21ksoftirqd/111:29:271
9926992928,1cyclictest24-21ksoftirqd/110:19:481
9926992925,2cyclictest24-21ksoftirqd/111:13:181
992699290,8cyclictest24-21ksoftirqd/108:31:481
992699290,4cyclictest0-21swapper/111:49:151
992699285,9cyclictest91rcu_preempt12:04:011
9926992811,2cyclictest91rcu_preempt10:55:471
9925992810,14cyclictest29831-21kworker/u4:110:38:120
992699278,0cyclictest91rcu_preempt10:41:151
992699276,2cyclictest91rcu_preempt10:18:171
9926992723,3cyclictest24-21ksoftirqd/111:19:331
9926992714,7cyclictest19798-21apache210:27:241
9926992710,8cyclictest0-21swapper/108:09:271
9925992727,0cyclictest0-21swapper/011:08:140
9925992710,5cyclictest0-21swapper/009:32:040
9925992710,17cyclictest0-21swapper/008:23:050
992599270,21cyclictest22079-21/usr/sbin/munin09:04:320
992699262,1cyclictest91rcu_preempt11:07:291
9925992611,14cyclictest0-21swapper/010:12:220
9925992610,0cyclictest0-21swapper/009:26:290
992599260,22cyclictest0-21swapper/007:24:310
992599260,17cyclictest0-21swapper/009:02:030
9926992525,0cyclictest24-21ksoftirqd/110:04:161
9926992520,3cyclictest24-21ksoftirqd/109:19:261
9926992519,3cyclictest24-21ksoftirqd/110:14:101
9926992510,6cyclictest0-21swapper/108:49:331
9925992510,6cyclictest0-21swapper/008:34:300
9925992510,2cyclictest0-21swapper/009:52:390
992699244,5cyclictest0-21swapper/107:59:271
992699244,12cyclictest0-21swapper/109:34:311
992699243,7cyclictest91rcu_preempt11:55:111
9926992422,1cyclictest24-21ksoftirqd/108:37:311
9926992418,4cyclictest26533-21ssh12:11:291
992699241,1cyclictest91rcu_preempt12:24:291
9926992410,3cyclictest0-21swapper/110:44:271
9926992410,0cyclictest0-21swapper/110:37:341
9925992422,1cyclictest0-21swapper/010:26:430
9925992421,2cyclictest19798-21apache209:15:270
9925992413,8cyclictest0-21swapper/007:39:260
9925992412,11cyclictest20603-21ssh09:48:580
9925992410,9cyclictest0-21swapper/010:51:240
9926992321,2cyclictest0-21swapper/110:51:551
9926992321,1cyclictest0-21swapper/112:36:101
9926992315,6cyclictest23006-21sed07:39:351
9925992318,4cyclictest10564-21kworker/0:209:54:270
9925992314,5cyclictest19824-21apache210:08:340
9925992310,5cyclictest0-21swapper/009:42:290
992599230,19cyclictest14069-21if_err_eth011:54:280
9926992220,1cyclictest802-21apache208:05:241
9926992219,1cyclictest24-21ksoftirqd/109:41:031
9926992215,4cyclictest0-21swapper/109:44:331
992699221,3cyclictest91rcu_preempt12:14:261
9926992211,7cyclictest19824-21apache212:04:261
9926992210,8cyclictest0-21swapper/107:44:271
9925992219,2cyclictest1199-21runrttasks08:50:040
992599221,16cyclictest23841-21diskmemload12:22:490
9925992210,7cyclictest0-21swapper/008:44:330
9925992210,4cyclictest0-21swapper/009:19:430
1229522210,0sleep00-21swapper/009:36:340
992699213,14cyclictest0-21swapper/111:49:271
9926992119,1cyclictest0-21swapper/109:18:291
9926992118,1cyclictest24-21ksoftirqd/110:01:481
992699211,2cyclictest91rcu_preempt07:14:271
9926992110,5cyclictest0-21swapper/107:54:271
992599214,12cyclictest0-21swapper/009:09:270
992599212,10cyclictest0-21swapper/007:29:260
9925992120,1cyclictest19824-21apache210:02:010
9925992114,2cyclictest0-21swapper/010:20:170
992599211,10cyclictest0-21swapper/012:14:320
9925992110,8cyclictest0-21swapper/012:00:580
9925992110,7cyclictest0-21swapper/011:29:310
9925992110,5cyclictest0-21swapper/012:04:350
992599210,20cyclictest0-21swapper/008:08:020
992699203,10cyclictest0-21swapper/108:24:251
992699202,12cyclictest23857-21sleep09:09:151
9926992019,1cyclictest0-21swapper/111:27:391
9926992018,1cyclictest12659-21df08:39:281
9926992017,2cyclictest0-21swapper/109:09:281
9926992016,2cyclictest0-21swapper/109:02:021
9926992014,4cyclictest24-21ksoftirqd/109:29:521
9926992010,4cyclictest0-21swapper/107:09:251
992699200,10cyclictest24-21ksoftirqd/107:24:281
9925992014,6cyclictest0-21swapper/007:22:050
992599201,17cyclictest0-21swapper/010:58:440
9925992011,6cyclictest100150irq/106-eth1-rx10:33:070
9925992011,5cyclictest0-21swapper/010:39:260
9925992010,5cyclictest0-21swapper/007:34:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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