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2026-07-19 - 18:43
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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 Sun Jul 19, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
119212710,1sleep10-21swapper/111:34:011
906926957,8sleep10-21swapper/107:08:001
884626851,8sleep00-21swapper/007:05:420
231092660,1sleep00-21swapper/007:43:360
9287994610,28cyclictest0-21swapper/108:33:131
9287994310,4cyclictest0-21swapper/112:13:391
9287994310,32cyclictest0-21swapper/111:13:491
9287994211,27cyclictest91rcu_preempt09:33:141
9287994111,11cyclictest91rcu_preempt12:18:301
9287994110,23cyclictest0-21swapper/111:54:261
9287994110,15cyclictest0-21swapper/108:28:211
9287994110,15cyclictest0-21swapper/107:10:321
9287994110,12cyclictest0-21swapper/107:56:301
9287994110,11cyclictest0-21swapper/107:34:251
9287993910,29cyclictest0-21swapper/111:43:351
9287993910,29cyclictest0-21swapper/108:53:531
9287993910,28cyclictest0-21swapper/108:17:451
9287993910,24cyclictest91rcu_preempt10:13:141
9287993812,24cyclictest91rcu_preempt08:33:381
9287993811,6cyclictest91rcu_preempt09:18:061
9287993810,27cyclictest0-21swapper/111:23:401
9287993810,27cyclictest0-21swapper/110:40:341
9287993810,27cyclictest0-21swapper/109:55:331
9287993712,25cyclictest0-21swapper/110:05:111
9287993710,27cyclictest0-21swapper/112:32:321
9287993710,27cyclictest0-21swapper/109:34:111
9287993710,26cyclictest0-21swapper/112:00:101
9287993710,25cyclictest0-21swapper/109:26:531
9287993710,24cyclictest0-21swapper/110:51:131
9287993710,22cyclictest100250irq/107-eth1-rx10:26:351
928799370,36cyclictest14103-21ssh10:16:191
9287993611,2cyclictest91rcu_preempt08:20:511
9287993610,26cyclictest0-21swapper/112:07:211
928799360,35cyclictest26606-21/usr/sbin/munin12:33:381
928799360,35cyclictest22859-21if_eth111:48:381
928799360,35cyclictest17865-21ssh10:20:401
928799360,35cyclictest16662-21timerandwakeup08:48:411
9287993513,1cyclictest91rcu_preempt10:45:071
9287993511,24cyclictest22198-21ls07:38:431
9287993511,23cyclictest0-21swapper/109:18:421
9287993510,25cyclictest0-21swapper/111:39:261
9287993510,24cyclictest0-21swapper/110:56:021
9287993510,24cyclictest0-21swapper/109:58:421
9287993510,23cyclictest0-21swapper/107:28:421
928799350,34cyclictest7087-21/usr/sbin/munin12:08:411
928799350,34cyclictest28108-21ntp_kernel_pll_10:33:391
928799350,34cyclictest21178-21ssh12:26:571
928799350,34cyclictest16487-21/usr/sbin/munin09:38:391
9287993410,23cyclictest0-21swapper/109:07:491
9287993410,17cyclictest0-21swapper/111:09:081
928799340,33cyclictest29144-21hddtemp_smartct07:58:361
928799340,33cyclictest23157-21diskmemload11:20:091
928799340,33cyclictest23157-21diskmemload11:00:451
928799340,33cyclictest23157-21diskmemload09:08:281
928799340,33cyclictest19776-21apache_volume09:43:351
928799340,33cyclictest19681-21/usr/sbin/munin11:03:391
928799340,33cyclictest1445-21awk08:08:441
9287993310,22cyclictest0-21swapper/107:18:391
928799330,32cyclictest6303-21ssh11:28:341
928799330,32cyclictest23157-21diskmemload09:50:111
928799330,32cyclictest0-21swapper/110:31:441
928799330,32cyclictest0-21swapper/108:43:431
928799321,30cyclictest0-21swapper/108:58:351
9287993211,19cyclictest0-21swapper/107:46:481
928799320,31cyclictest0-21swapper/107:13:351
9287993112,17cyclictest0-21swapper/108:05:111
9286993110,6cyclictest0-21swapper/011:00:540
9287993012,18cyclictest0-21swapper/107:23:241
928799300,29cyclictest25929-21mailstats07:48:421
9286993010,13cyclictest24987-21kworker/u4:209:41:140
928799290,26cyclictest11767-21apache_volume08:38:351
9286992910,1cyclictest0-21swapper/012:13:380
9286992610,9cyclictest0-21swapper/011:34:360
9286992421,2cyclictest25687-21ssh09:49:300
928699241,20cyclictest0-21swapper/009:28:340
9286992410,3cyclictest0-21swapper/009:47:490
928699240,8cyclictest0-21swapper/010:02:280
928699233,3cyclictest0-21swapper/012:25:420
9286992318,4cyclictest19109-21apache209:15:540
9286992312,7cyclictest0-21swapper/012:11:260
9286992312,4cyclictest0-21swapper/010:23:090
9286992311,5cyclictest0-21swapper/009:53:400
9286992311,5cyclictest0-21swapper/009:37:400
9286992310,8cyclictest0-21swapper/010:03:370
9286992310,8cyclictest0-21swapper/007:53:410
9286992310,7cyclictest19598-21grep11:43:430
928699222,5cyclictest0-21swapper/008:29:110
9286992222,0cyclictest0-21swapper/012:05:420
9286992221,1cyclictest19129-21apache211:50:020
9286992210,8cyclictest0-21swapper/011:17:010
9286992210,7cyclictest0-21swapper/009:03:360
9286992210,4cyclictest0-21swapper/009:24:280
9286992118,3cyclictest19109-21apache208:53:410
9286992110,5cyclictest0-21swapper/011:03:340
9286992110,3cyclictest0-21swapper/010:32:380
928699205,14cyclictest0-21swapper/008:48:410
928699204,13cyclictest0-21swapper/011:55:250
928699202,13cyclictest0-21swapper/011:08:370
9286992017,3cyclictest19129-21apache211:21:050
9286992017,3cyclictest19129-21apache209:10:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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