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2026-09-02 - 13:40
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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 376 highest latencies:
System rackcslot2.osadl.org (updated Wed Sep 02, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
396421160,0sleep10-21swapper/122:13:401
696327159,8sleep10-21swapper/119:07:391
518526350,8sleep00-21swapper/019:03:020
7179993413,6cyclictest12469-21kworker/u4:022:10:341
7178993332,0cyclictest0-21swapper/000:31:550
7178993110,4cyclictest0-21swapper/022:41:090
717999271,3cyclictest91rcu_preempt21:03:171
717999271,24cyclictest0-21swapper/121:41:031
719622610,4sleep00-21swapper/019:08:120
7179992625,0cyclictest24-21ksoftirqd/122:53:111
7179992625,0cyclictest24-21ksoftirqd/122:03:151
7179992610,11cyclictest0-21swapper/121:32:091
7178992622,3cyclictest5238-21apache220:33:170
717999252,2cyclictest0-21swapper/123:25:201
7179992422,1cyclictest24-21ksoftirqd/100:20:351
7179992414,6cyclictest0-21swapper/123:08:121
7179992410,8cyclictest0-21swapper/121:25:191
7179992410,8cyclictest0-21swapper/119:47:291
7179992410,6cyclictest0-21swapper/120:08:211
7179992410,0cyclictest0-21swapper/122:34:131
717999240,1cyclictest91rcu_preempt21:14:211
717899244,17cyclictest0-21swapper/023:07:380
7178992418,6cyclictest5238-21apache200:15:460
717899240,23cyclictest0-21swapper/020:54:270
717899240,21cyclictest0-21swapper/020:21:430
717999234,4cyclictest91rcu_preempt21:18:201
7179992322,0cyclictest24-21ksoftirqd/119:53:151
7179992321,1cyclictest7867-21ssh23:06:281
7179992317,4cyclictest24479-21snmpd23:43:211
7179992313,5cyclictest0-21swapper/100:24:291
7179992310,4cyclictest0-21swapper/120:33:151
7178992322,0cyclictest0-21swapper/019:58:190
7178992321,1cyclictest28221-21forks00:23:120
717899230,3cyclictest27764-21/usr/sbin/munin22:03:200
717899230,19cyclictest0-21swapper/023:16:520
717999226,9cyclictest0-21swapper/121:51:281
7179992222,0cyclictest0-21swapper/123:48:221
7179992221,0cyclictest24-21ksoftirqd/100:28:191
7179992220,1cyclictest24-21ksoftirqd/119:18:121
7179992217,3cyclictest24-21ksoftirqd/123:39:561
7179992215,3cyclictest0-21swapper/100:03:131
7179992210,6cyclictest0-21swapper/100:01:191
7179992210,4cyclictest0-21swapper/123:29:341
7179992210,3cyclictest0-21swapper/122:40:421
7179992210,2cyclictest0-21swapper/120:53:111
7179992210,1cyclictest0-21swapper/122:48:141
717899229,7cyclictest0-21swapper/021:23:120
7178992212,6cyclictest0-21swapper/021:33:140
7178992211,5cyclictest0-21swapper/022:33:180
7178992210,8cyclictest0-21swapper/019:28:000
7178992210,5cyclictest0-21swapper/000:35:510
7178992210,1cyclictest0-21swapper/020:03:100
717899220,1cyclictest0-21swapper/022:32:430
717899220,19cyclictest0-21swapper/022:58:090
717899220,13cyclictest0-21swapper/019:18:210
1588322210,0sleep10-21swapper/122:32:081
717999216,10cyclictest26100-21/usr/sbin/munin23:33:111
717999213,14cyclictest0-21swapper/123:53:101
7179992120,1cyclictest24-21ksoftirqd/121:58:111
7179992119,1cyclictest24-21ksoftirqd/100:33:171
7179992113,6cyclictest0-21swapper/122:59:311
7179992113,3cyclictest231ktimersoftd/100:08:221
7179992111,6cyclictest24-21ksoftirqd/122:21:361
7179992111,6cyclictest0-21swapper/119:08:131
717999211,12cyclictest0-21swapper/121:43:191
7179992110,5cyclictest0-21swapper/121:09:101
7179992110,5cyclictest0-21swapper/120:58:111
717899216,7cyclictest18720-21/usr/sbin/munin19:38:100
717899216,7cyclictest11147-21idleruntime-cro23:58:000
7178992121,0cyclictest0-21swapper/021:22:010
7178992110,6cyclictest0-21swapper/019:43:180
7178992110,5cyclictest0-21swapper/023:33:170
7178992110,5cyclictest0-21swapper/000:00:330
7178992110,4cyclictest100250irq/107-eth1-rx23:23:530
7178992110,4cyclictest0-21swapper/019:15:290
7178992110,3cyclictest0-21swapper/000:18:120
717999202,8cyclictest28308-21apache_processe20:03:101
7179992020,0cyclictest231ktimersoftd/121:35:391
7179992019,0cyclictest24-21ksoftirqd/119:58:201
7179992018,1cyclictest231ktimersoftd/121:55:191
7179992016,2cyclictest24-21ksoftirqd/123:15:161
7179992014,5cyclictest23586-21munin-node20:20:211
7179992010,0cyclictest0-21swapper/120:43:291
717999200,3cyclictest91rcu_preempt19:39:221
717999200,19cyclictest0-21swapper/122:24:501
717899208,10cyclictest30463-21ssh22:53:090
717899207,10cyclictest0-21swapper/020:28:130
717899204,8cyclictest0-21swapper/022:23:210
7178992019,1cyclictest0-21swapper/021:54:330
7178992015,4cyclictest5211-21apache221:08:570
7178992014,3cyclictest5211-21apache221:45:090
7178992011,5cyclictest0-21swapper/022:21:460
7178992011,3cyclictest100250irq/107-eth1-rx22:08:140
7178992010,8cyclictest0-21swapper/020:48:190
7178992010,4cyclictest0-21swapper/023:38:180
7178992010,1cyclictest0-21swapper/021:42:020
717999199,8cyclictest0-21swapper/123:21:031
717999196,10cyclictest0-21swapper/100:13:171
717999193,10cyclictest0-21swapper/119:48:131
7179991916,2cyclictest24-21ksoftirqd/122:44:301
7179991916,2cyclictest24-21ksoftirqd/120:40:211
7179991910,4cyclictest0-21swapper/120:23:131
717899196,6cyclictest15113-21kworker/u4:123:19:510
7178991913,4cyclictest11325-21/usr/sbin/munin20:43:120
7178991910,6cyclictest0-21swapper/000:03:160
7178991910,5cyclictest0-21swapper/020:08:190
7178991910,4cyclictest0-21swapper/022:49:320
7178991910,3cyclictest0-21swapper/022:15:560
7178991910,1cyclictest0-21swapper/022:02:030
1069721910,1sleep10-21swapper/119:16:201
7179991810,4cyclictest0-21swapper/119:28:121
717899186,7cyclictest0-21swapper/019:53:230
717899182,9cyclictest0-21swapper/022:43:130
717899182,10cyclictest0-21swapper/020:13:180
7178991818,0cyclictest0-21swapper/021:29:000
717899181,12cyclictest0-21swapper/019:28:210
7178991810,4cyclictest0-21swapper/023:10:420
7178991810,3cyclictest0-21swapper/020:38:160
7178991810,2cyclictest0-21swapper/019:33:110
7178991810,2cyclictest0-21swapper/000:08:150
717899174,7cyclictest0-21swapper/020:23:130
717899173,9cyclictest0-21swapper/021:03:100
717899172,8cyclictest0-21swapper/023:43:130
717899171,4cyclictest20758-21diskmemload23:28:120
7178991710,4cyclictest0-21swapper/021:48:570
7178991710,2cyclictest0-21swapper/020:58:210
7179991613,2cyclictest802-21apache219:37:001
7179991610,4cyclictest231ktimersoftd/120:49:101
7179991610,4cyclictest0-21swapper/120:28:191
717999160,7cyclictest32477-21/usr/sbin/munin20:13:141
7178991610,3cyclictest0-21swapper/023:48:180
7178991610,2cyclictest0-21swapper/021:13:140
7178991610,1cyclictest0-21swapper/019:52:350
7179991410,3cyclictest24-21ksoftirqd/119:23:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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