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2025-08-30 - 01:10
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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 Aug 29, 2025 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1129727057,8sleep10-21swapper/107:02:521
12632680,1sleep10-21swapper/108:02:371
39822670,0sleep10-21swapper/109:19:561
1131026754,8sleep00-21swapper/007:02:590
1191399397,1cyclictest24-21ksoftirqd/110:37:401
1191399366,6cyclictest16305-21apache_processe08:42:341
11913993211,3cyclictest91rcu_preempt11:11:551
1191399315,1cyclictest91rcu_preempt11:44:371
11913993110,1cyclictest0-21swapper/110:55:101
11913993110,1cyclictest0-21swapper/109:07:261
11912993126,3cyclictest0-21swapper/009:37:220
11913993024,1cyclictest24-21ksoftirqd/110:49:401
11913993020,1cyclictest91rcu_preempt11:05:181
11913993010,5cyclictest0-21swapper/111:33:531
11912993027,2cyclictest81ktimersoftd/010:07:360
1191399297,3cyclictest91rcu_preempt10:13:191
11913992913,4cyclictest91rcu_preempt12:02:531
1191399290,17cyclictest11290-21kworker/u4:209:34:011
1191399289,3cyclictest91rcu_preempt10:30:101
1191399285,1cyclictest91rcu_preempt10:09:591
11913992826,2cyclictest0-21swapper/111:37:361
11913992825,2cyclictest0-21swapper/111:47:411
11913992820,4cyclictest24-21ksoftirqd/111:12:391
1191399281,5cyclictest24-21ksoftirqd/110:59:331
11913992814,8cyclictest24-21ksoftirqd/108:27:371
1191399280,21cyclictest26243-21kworker/u4:112:14:011
1191399277,1cyclictest24-21ksoftirqd/110:17:441
1191399274,9cyclictest24-21ksoftirqd/109:28:391
1191399274,2cyclictest91rcu_preempt09:43:391
11913992726,1cyclictest0-21swapper/109:14:521
11913992725,2cyclictest24-21ksoftirqd/109:57:421
11913992724,2cyclictest24-21ksoftirqd/111:59:061
11913992723,3cyclictest19875-21apache_volume11:52:321
11913992721,3cyclictest24-21ksoftirqd/107:57:431
11913992719,4cyclictest0-21swapper/109:52:011
11913992718,9cyclictest0-21swapper/112:35:581
11913992718,7cyclictest21734-21apache212:22:311
1191399270,8cyclictest0-21swapper/108:38:511
11912992725,1cyclictest7-21ksoftirqd/007:17:230
1191399267,3cyclictest4781-21apache_accesses08:12:351
1191399264,1cyclictest91rcu_preempt07:40:591
11913992626,0cyclictest0-21swapper/107:11:201
11913992623,2cyclictest21686-21dump-pmu-power10:27:221
11913992622,3cyclictest5457-21/usr/sbin/munin09:22:351
11913992622,3cyclictest24-21ksoftirqd/112:28:391
11913992617,7cyclictest21734-21apache212:11:401
11912992616,6cyclictest21734-21apache210:37:150
1191399253,5cyclictest91rcu_preempt11:19:341
11913992522,2cyclictest2926-21ssh10:43:591
11913992521,3cyclictest2346-21apache_accesses11:27:381
11913992516,8cyclictest0-21swapper/107:23:291
11913992510,6cyclictest0-21swapper/107:32:111
11912992523,1cyclictest21734-21apache209:55:390
11912992511,3cyclictest0-21swapper/009:15:140
11912992510,5cyclictest0-21swapper/011:24:470
1191299250,3cyclictest0-21swapper/009:45:110
11913992422,1cyclictest25787-21diskmemload09:52:421
11913992421,2cyclictest3666-21open_inodes08:07:401
11913992421,2cyclictest3245-21ssh10:02:371
11913992421,2cyclictest25787-21diskmemload09:40:331
11913992421,2cyclictest16135-21hddtemp_smartct07:17:351
11913992419,2cyclictest817-21apache208:20:371
11913992418,5cyclictest0-21swapper/107:12:411
11913992416,3cyclictest231ktimersoftd/107:32:371
11912992420,3cyclictest21759-21apache211:28:540
11912992418,5cyclictest21734-21apache211:46:510
11913992321,1cyclictest13234-21ntp_states08:32:411
11913992320,2cyclictest817-21apache208:53:361
11913992320,2cyclictest22120-21apache_processe08:57:351
11913992312,6cyclictest231ktimersoftd/107:42:351
1191399230,22cyclictest0-21swapper/110:35:251
1191299234,12cyclictest25787-21diskmemload10:38:150
1191399225,2cyclictest91rcu_preempt07:47:241
11913992219,2cyclictest24-21ksoftirqd/112:21:291
11913992218,3cyclictest0-21swapper/109:02:371
1191299222,0cyclictest25787-21diskmemload09:29:010
11912992215,4cyclictest21759-21apache209:22:110
11912992213,5cyclictest7-21ksoftirqd/011:55:480
11912992210,6cyclictest0-21swapper/012:10:140
11912992210,6cyclictest0-21swapper/010:22:220
671722110,1sleep00-21swapper/008:17:350
1829822110,0sleep00-21swapper/011:49:120
11913992119,2cyclictest0-21swapper/111:22:371
11913992118,2cyclictest29835-21perl07:52:371
11912992118,1cyclictest7-21ksoftirqd/010:03:110
11912992117,3cyclictest21734-21apache207:51:380
11912992117,3cyclictest11910-21cyclictest09:39:050
11912992115,3cyclictest7-21ksoftirqd/008:02:420
11912992113,1cyclictest81ktimersoftd/009:57:310
11912992112,5cyclictest0-21swapper/009:23:340
1191399204,9cyclictest0-21swapper/108:47:541
11913992016,3cyclictest8628-21apache_accesses08:22:341
1191299206,10cyclictest12500-21ssh11:41:530
1191299205,6cyclictest0-21swapper/007:22:390
11912992020,0cyclictest81ktimersoftd/010:13:570
11912992019,1cyclictest7-21ksoftirqd/008:02:220
11912992019,0cyclictest7-21ksoftirqd/012:22:360
11912992018,1cyclictest81ktimersoftd/008:52:420
11912992018,1cyclictest29170-21seq12:04:380
11912992016,3cyclictest21734-21apache209:50:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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