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2026-05-18 - 08:46
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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 Mon May 18, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
191452690,1sleep00-21swapper/022:49:060
2582526654,8sleep10-21swapper/119:04:591
2445726549,8sleep00-21swapper/019:04:060
26385994310,23cyclictest0-21swapper/000:05:400
26385994210,24cyclictest0-21swapper/021:52:550
26385994121,19cyclictest12465-21ls19:54:160
26385994110,30cyclictest0-21swapper/020:54:060
26385994110,30cyclictest0-21swapper/000:31:460
26385994010,30cyclictest0-21swapper/022:39:070
26385994010,29cyclictest0-21swapper/022:01:470
26385994010,29cyclictest0-21swapper/021:26:500
26385994010,29cyclictest0-21swapper/019:34:130
26385994010,28cyclictest0-21swapper/021:36:470
26385993915,23cyclictest0-21swapper/019:19:070
26385993910,8cyclictest13728-21ssh21:15:140
26385993910,29cyclictest0-21swapper/023:37:340
26385993910,29cyclictest0-21swapper/021:47:110
26385993910,29cyclictest0-21swapper/019:09:150
26385993910,28cyclictest0-21swapper/021:54:110
26385993910,28cyclictest0-21swapper/021:13:200
26385993910,28cyclictest0-21swapper/020:39:160
26385993910,28cyclictest0-21swapper/019:40:380
26385993910,27cyclictest0-21swapper/022:08:500
26385993910,24cyclictest0-21swapper/022:14:570
26385993810,27cyclictest0-21swapper/023:29:110
26385993810,27cyclictest0-21swapper/021:39:100
26385993810,26cyclictest0-21swapper/023:51:330
26385993810,26cyclictest0-21swapper/019:29:300
26385993810,22cyclictest0-21swapper/020:49:070
26386993727,3cyclictest29166-21df22:19:081
26385993710,26cyclictest0-21swapper/022:56:310
26385993710,26cyclictest0-21swapper/022:28:280
26385993710,26cyclictest0-21swapper/020:34:130
26385993710,26cyclictest0-21swapper/000:19:150
26385993710,26cyclictest0-21swapper/000:15:120
26385993612,23cyclictest0-21swapper/023:16:590
26385993610,26cyclictest0-21swapper/021:29:120
26385993610,25cyclictest0-21swapper/000:34:070
26385993610,25cyclictest0-21swapper/000:24:140
26385993610,24cyclictest0-21swapper/022:35:250
2638699355,0cyclictest91rcu_preempt21:55:501
26385993510,25cyclictest0-21swapper/022:59:110
26385993510,24cyclictest0-21swapper/023:54:090
26385993510,24cyclictest0-21swapper/022:09:140
26385993510,24cyclictest0-21swapper/020:19:080
26385993510,24cyclictest0-21swapper/019:26:140
26385993510,24cyclictest0-21swapper/000:11:080
26385993510,23cyclictest0-21swapper/023:24:140
26385993510,21cyclictest0-21swapper/019:44:110
2638599350,3cyclictest4052-21/usr/sbin/munin22:29:160
2638699346,4cyclictest91rcu_preempt23:29:111
26386993432,1cyclictest231ktimersoftd/122:16:551
2638699342,16cyclictest24-21ksoftirqd/123:41:251
26385993410,22cyclictest0-21swapper/023:09:130
26385993410,21cyclictest0-21swapper/019:49:130
26385993310,23cyclictest0-21swapper/020:04:140
26385993310,22cyclictest0-21swapper/023:45:280
26385993310,22cyclictest0-21swapper/023:41:060
26385993310,22cyclictest0-21swapper/021:19:370
26385993310,21cyclictest0-21swapper/023:08:310
26385993310,11cyclictest0-21swapper/022:21:140
26386993231,0cyclictest24-21ksoftirqd/121:19:121
2638599320,7cyclictest0-21swapper/022:48:320
2638699316,2cyclictest91rcu_preempt19:59:111
26386993131,0cyclictest0-21swapper/100:31:341
26386993115,5cyclictest2180-21df20:54:061
26385993110,20cyclictest0-21swapper/023:23:210
26385993110,20cyclictest0-21swapper/000:01:540
2638699303,10cyclictest24-21ksoftirqd/121:27:561
26386993028,1cyclictest24-21ksoftirqd/121:39:101
2638599304,25cyclictest25752-21grep20:29:140
2638699299,9cyclictest0-21swapper/122:09:371
2638699296,4cyclictest91rcu_preempt00:23:591
26386992928,0cyclictest0-21swapper/122:56:121
26386992927,1cyclictest24-21ksoftirqd/123:19:101
26386992916,11cyclictest24-21ksoftirqd/100:11:271
2638599291,27cyclictest0-21swapper/019:59:050
26385992910,18cyclictest0-21swapper/020:47:320
2638699289,1cyclictest91rcu_preempt00:03:131
26386992828,0cyclictest24-21ksoftirqd/123:18:501
26386992827,1cyclictest24-21ksoftirqd/120:34:091
26386992827,0cyclictest24-21ksoftirqd/121:45:391
26386992813,8cyclictest100250irq/107-eth1-rx23:54:381
26386992723,3cyclictest0-21swapper/122:24:151
26386992720,6cyclictest15383-21ssh21:59:441
26386992710,13cyclictest0-21swapper/122:30:241
26385992710,6cyclictest0-21swapper/021:08:030
2638699263,8cyclictest24-21ksoftirqd/119:17:371
26386992624,2cyclictest0-21swapper/122:44:121
26386992624,2cyclictest0-21swapper/122:39:101
26386992624,2cyclictest0-21swapper/119:54:141
26386992623,2cyclictest0-21swapper/100:08:441
26386992621,4cyclictest0-21swapper/120:44:161
26386992615,7cyclictest91rcu_preempt23:47:311
26386992610,10cyclictest0-21swapper/122:04:101
2638699260,2cyclictest18764-21kworker/u4:200:37:101
26385992610,16cyclictest0-21swapper/020:24:070
26385992610,16cyclictest0-21swapper/020:24:070
26385992610,12cyclictest0-21swapper/020:16:000
2638699259,8cyclictest91rcu_preempt21:10:121
26386992524,1cyclictest0-21swapper/122:36:081
26386992518,6cyclictest0-21swapper/119:23:511
2638699244,2cyclictest91rcu_preempt19:48:211
26386992422,2cyclictest0-21swapper/100:23:171
26386992420,3cyclictest20953-21apache_processe20:19:081
26386992419,5cyclictest0-21swapper/123:26:111
26386992419,4cyclictest0-21swapper/123:51:361
2638699241,20cyclictest2074-21hwlatdetect19:29:081
26386992410,12cyclictest0-21swapper/120:39:111
26385992410,9cyclictest0-21swapper/019:14:150
26386992322,1cyclictest0-21swapper/123:38:421
26386992321,2cyclictest0-21swapper/119:34:131
26386992321,1cyclictest24-21ksoftirqd/120:13:501
26386992320,2cyclictest18505-21gzip00:14:141
26386992319,3cyclictest7646-21ssh21:49:201
26386992317,6cyclictest0-21swapper/121:36:471
26386992315,6cyclictest0-21swapper/123:09:081
26385992310,13cyclictest0-21swapper/020:59:090
2638699229,7cyclictest0-21swapper/121:04:081
26386992221,1cyclictest0-21swapper/122:50:171
26386992219,2cyclictest7593-21diskmemload22:59:131
26386992218,3cyclictest32382-21/usr/sbin/munin19:24:071
2638699216,7cyclictest0-21swapper/119:39:071
26386992121,0cyclictest0-21swapper/120:31:321
26386992118,2cyclictest15741-21cat20:04:121
26386992118,2cyclictest11911-21apache_accesses21:14:101
26386992117,3cyclictest23945-21irqstats21:29:101
26386992117,3cyclictest23496-21memory20:24:111
26386992117,3cyclictest23496-21memory20:24:111
26386992110,8cyclictest0-21swapper/120:53:501
26385992110,8cyclictest0-21swapper/020:09:060
26386992018,1cyclictest24-21ksoftirqd/120:13:561
26386992015,4cyclictest0-21swapper/123:05:421
26386992012,4cyclictest231ktimersoftd/120:59:071
26386991911,7cyclictest10438-21sed19:49:151
2638699183,12cyclictest0-21swapper/119:09:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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