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2026-09-23 - 04:32
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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 highest latencies:
System rackcslot2.osadl.org (updated Wed Sep 23, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2442927057,8sleep10-21swapper/119:03:281
2310626754,8sleep00-21swapper/019:03:000
25032993634,1cyclictest24-21ksoftirqd/122:53:111
25031993131,0cyclictest0-21swapper/023:34:130
2503299307,2cyclictest91rcu_preempt21:34:511
25032993030,0cyclictest24-21ksoftirqd/120:10:281
25032993029,0cyclictest24-21ksoftirqd/122:32:501
25032993028,1cyclictest100250irq/107-eth1-rx22:45:131
25031993010,19cyclictest0-21swapper/020:55:130
2503199300,29cyclictest0-21swapper/023:10:530
2503299295,1cyclictest91rcu_preempt19:25:241
25032992928,0cyclictest24-21ksoftirqd/121:28:041
25031992910,19cyclictest0-21swapper/000:22:260
25032992813,2cyclictest1028-21kworker/u4:023:14:261
25032992810,3cyclictest0-21swapper/122:33:011
2503299280,3cyclictest91rcu_preempt20:43:061
2503299275,2cyclictest91rcu_preempt21:49:571
25032992710,8cyclictest0-21swapper/123:28:371
25031992727,0cyclictest0-21swapper/021:32:080
25031992723,3cyclictest5747-21apache223:53:350
2503199270,0cyclictest0-21swapper/000:33:380
25032992626,0cyclictest0-21swapper/121:59:041
25032992625,1cyclictest0-21swapper/100:11:011
25032992623,2cyclictest24-21ksoftirqd/123:58:051
25032992623,2cyclictest24-21ksoftirqd/123:58:051
25032992610,9cyclictest0-21swapper/123:21:191
2503299260,6cyclictest91rcu_preempt23:37:041
25031992626,0cyclictest0-21swapper/000:27:560
2503199260,0cyclictest0-21swapper/022:14:580
2503299254,12cyclictest91rcu_preempt21:17:211
25032992524,0cyclictest24-21ksoftirqd/122:48:041
2503299251,2cyclictest91rcu_preempt21:10:111
2503299250,3cyclictest24-21ksoftirqd/123:38:031
2503299242,6cyclictest91rcu_preempt21:53:251
25032992420,2cyclictest24-21ksoftirqd/119:22:491
25032992419,3cyclictest24-21ksoftirqd/122:10:591
2503299241,3cyclictest91rcu_preempt00:34:491
25032992413,3cyclictest24-21ksoftirqd/121:43:261
2503299241,21cyclictest0-21swapper/121:21:131
25032992410,9cyclictest0-21swapper/122:24:581
2503299240,9cyclictest91rcu_preempt22:16:321
2503299240,23cyclictest0-21swapper/122:05:231
25031992419,4cyclictest5729-21apache221:45:550
25031992418,4cyclictest21477-21munin-node23:51:000
25031992417,6cyclictest5729-21apache223:39:480
25031992413,6cyclictest0-21swapper/000:23:040
2503299236,1cyclictest91rcu_preempt23:43:101
2503299235,12cyclictest0-21swapper/120:13:091
25032992323,0cyclictest24-21ksoftirqd/122:19:131
25032992322,1cyclictest24-21ksoftirqd/100:23:061
25032992319,3cyclictest24-21ksoftirqd/100:14:501
2503299231,2cyclictest91rcu_preempt19:13:031
25032992311,9cyclictest24920-21kworker/1:200:30:021
25032992310,9cyclictest24-21ksoftirqd/100:02:511
25032992310,6cyclictest0-21swapper/100:18:391
2503299230,2cyclictest91rcu_preempt21:42:251
25031992319,3cyclictest8897-21cron23:32:500
25031992310,7cyclictest0-21swapper/000:08:270
25031992310,6cyclictest0-21swapper/021:50:500
25031992310,3cyclictest0-21swapper/022:39:110
2503299227,9cyclictest0-21swapper/120:48:051
2503299227,13cyclictest231ktimersoftd/123:05:131
25032992221,1cyclictest24-21ksoftirqd/123:53:061
25032992212,2cyclictest20007-21/usr/sbin/munin23:48:061
25032992210,2cyclictest0-21swapper/123:08:111
2503299220,13cyclictest0-21swapper/122:38:081
25031992217,2cyclictest81ktimersoftd/021:34:450
25031992210,7cyclictest100250irq/107-eth1-rx21:19:400
25031992210,7cyclictest0-21swapper/020:08:100
25031992210,6cyclictest0-21swapper/000:03:100
25031992210,5cyclictest0-21swapper/022:58:090
264282210,1sleep02503199cyclictest22:23:030
2503299216,11cyclictest91rcu_preempt20:07:291
25032992111,9cyclictest0-21swapper/119:42:091
2503299211,12cyclictest91rcu_preempt19:32:201
25031992117,1cyclictest0-21swapper/022:43:110
25031992114,5cyclictest5747-21apache223:46:230
25031992110,6cyclictest0-21swapper/022:22:130
25031992110,5cyclictest0-21swapper/022:56:090
2503199210,20cyclictest0-21swapper/023:13:440
2503199210,11cyclictest0-21swapper/021:03:040
2503299201,9cyclictest0-21swapper/120:58:021
25032992014,3cyclictest24-21ksoftirqd/122:58:051
2503199204,11cyclictest0-21swapper/020:38:010
2503199203,16cyclictest0-21swapper/021:39:160
2503199203,10cyclictest0-21swapper/020:33:040
2503199201,9cyclictest27553-21users23:58:120
2503199201,9cyclictest27553-21users23:58:120
25031992017,1cyclictest0-21swapper/019:32:500
25031992016,3cyclictest18890-21ssh21:24:000
25031992013,3cyclictest5747-21apache223:19:200
25031992010,4cyclictest0-21swapper/022:28:020
25031992010,2cyclictest0-21swapper/021:53:000
214032200,1sleep00-21swapper/023:03:040
25032991917,2cyclictest0-21swapper/121:04:271
25032991916,1cyclictest5729-21apache219:43:291
25032991910,3cyclictest0-21swapper/123:23:021
25032991910,3cyclictest0-21swapper/120:34:221
2503199193,8cyclictest0-21swapper/019:23:020
2503199193,3cyclictest0-21swapper/000:15:070
2503199193,10cyclictest0-21swapper/020:58:010
2503199192,11cyclictest0-21swapper/022:33:090
25031991919,0cyclictest0-21swapper/021:13:390
25031991910,5cyclictest0-21swapper/022:07:170
25031991910,3cyclictest0-21swapper/020:28:100
25031991910,2cyclictest0-21swapper/023:25:180
25031991910,2cyclictest0-21swapper/019:43:080
25031991910,1cyclictest0-21swapper/022:48:400
2503299182,9cyclictest0-21swapper/120:53:011
25032991810,5cyclictest0-21swapper/119:48:021
25032991810,4cyclictest0-21swapper/119:57:501
25032991810,1cyclictest0-21swapper/120:18:021
2503199183,5cyclictest18337-21/usr/sbin/munin20:13:060
25031991810,3cyclictest0-21swapper/020:48:020
25031991810,3cyclictest0-21swapper/019:17:490
2503199180,17cyclictest1028-21kworker/u4:022:08:010
2503199180,11cyclictest30540-21taskset20:43:550
2503299178,3cyclictest0-21swapper/119:08:061
2503299172,8cyclictest0-21swapper/119:58:011
25032991710,7cyclictest0-21swapper/121:22:551
25032991710,2cyclictest0-21swapper/120:28:081
25031991713,2cyclictest0-21swapper/019:08:050
25031991710,4cyclictest0-21swapper/021:08:120
25031991710,4cyclictest0-21swapper/019:33:070
25031991710,2cyclictest0-21swapper/020:22:500
2883621610,1sleep10-21swapper/120:41:051
25032991614,1cyclictest21503-21apache_processe20:23:011
2503199165,6cyclictest0-21swapper/019:38:050
2503199162,6cyclictest0-21swapper/021:59:370
25031991610,5cyclictest0-21swapper/020:24:000
25031991610,2cyclictest0-21swapper/019:53:030
25031991610,1cyclictest0-21swapper/019:48:280
25032991510,0cyclictest0-21swapper/119:34:031
25031991510,1cyclictest0-21swapper/019:18:090
2503199150,8cyclictest0-21swapper/019:58:010
1531521510,0sleep00-21swapper/020:05:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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