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2025-09-16 - 08:52
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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 Tue Sep 16, 2025 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
467827150,9sleep10-21swapper/119:04:241
491726856,8sleep00-21swapper/019:06:520
193682670,0sleep00-21swapper/023:23:030
196612530,1sleep00-21swapper/021:07:310
5134993410,2cyclictest0-21swapper/122:32:361
5133993410,3cyclictest0-21swapper/000:30:020
5134993129,2cyclictest0-21swapper/122:50:441
513499304,2cyclictest91rcu_preempt22:28:001
513499303,6cyclictest91rcu_preempt22:55:361
5134993030,0cyclictest24-21ksoftirqd/120:51:081
5134992918,3cyclictest91rcu_preempt22:38:581
513499289,4cyclictest91rcu_preempt21:55:481
513499285,4cyclictest91rcu_preempt22:17:401
513499280,9cyclictest0-21swapper/121:37:261
5133992810,17cyclictest0-21swapper/021:14:210
513499279,3cyclictest91rcu_preempt20:22:561
5134992725,2cyclictest0-21swapper/123:10:361
5134992725,1cyclictest24-21ksoftirqd/121:16:281
5134992710,17cyclictest0-21swapper/121:20:461
513499270,1cyclictest0-21swapper/123:37:491
513399270,26cyclictest0-21swapper/022:57:350
322902270,1sleep032277-21munin-run22:57:140
513499268,2cyclictest91rcu_preempt20:18:381
513499264,2cyclictest91rcu_preempt23:25:521
513499263,1cyclictest97750irq/106-eth1-rx23:16:531
5134992624,2cyclictest0-21swapper/100:28:091
513499262,3cyclictest91rcu_preempt23:30:431
5134992623,1cyclictest91rcu_preempt22:14:201
5134992622,3cyclictest29932-21cut22:07:291
5134992617,4cyclictest24-21ksoftirqd/122:00:481
5134992612,7cyclictest231ktimersoftd/100:24:091
5134992610,16cyclictest0-21swapper/120:00:041
513499260,1cyclictest0-21swapper/122:02:241
5133992623,3cyclictest81ktimersoftd/021:57:140
513399260,14cyclictest0-21swapper/019:27:290
513499258,3cyclictest24-21ksoftirqd/123:17:361
513499255,2cyclictest91rcu_preempt21:49:051
513499253,2cyclictest91rcu_preempt23:34:071
5134992523,2cyclictest0-21swapper/121:33:511
513499250,1cyclictest91rcu_preempt22:43:141
5133992520,3cyclictest817-21apache223:34:260
513399250,24cyclictest21224-21users00:12:350
513499243,20cyclictest0-21swapper/100:21:191
5134992423,1cyclictest0-21swapper/120:10:401
5134992422,1cyclictest24-21ksoftirqd/121:07:101
5134992421,2cyclictest24-21ksoftirqd/100:32:351
513399249,14cyclictest0-21swapper/021:58:310
513399242,21cyclictest18760-21diskmemload00:11:420
5133992419,4cyclictest636-21nscd00:34:450
513399240,23cyclictest18760-21diskmemload22:46:470
513499232,7cyclictest0-21swapper/100:12:261
5134992322,1cyclictest0-21swapper/123:49:161
5134992321,2cyclictest0-21swapper/121:30:271
5134992320,2cyclictest9284-21df_inode19:17:281
5134992320,2cyclictest9133-21timerwakeupswit22:22:341
5134992320,2cyclictest7380-21cat23:52:341
5134992320,2cyclictest3653-21apache_volume23:02:281
513499230,23cyclictest0-21swapper/123:45:531
5133992310,8cyclictest0-21swapper/022:24:310
5133992310,3cyclictest0-21swapper/020:12:340
513399230,5cyclictest0-21swapper/021:30:550
5134992220,1cyclictest12255-21df_inode21:42:271
5134992219,3cyclictest0-21swapper/100:09:461
5134992219,2cyclictest18976-21fschecks_time19:42:281
5134992219,2cyclictest18760-21diskmemload23:59:561
5134992210,6cyclictest0-21swapper/119:22:331
5134992210,10cyclictest0-21swapper/119:52:251
513499220,13cyclictest0-21swapper/119:37:261
513399225,9cyclictest0-21swapper/021:42:270
513399223,14cyclictest0-21swapper/000:26:300
5133992222,0cyclictest0-21swapper/019:38:070
5133992216,5cyclictest7515-21apache221:51:120
5133992210,3cyclictest0-21swapper/021:24:170
513399220,18cyclictest0-21swapper/000:19:010
513399220,12cyclictest0-21swapper/020:47:380
714622110,1sleep00-21swapper/020:36:530
5134992117,3cyclictest31275-21/usr/sbin/munin20:12:341
5134992111,4cyclictest231ktimersoftd/121:22:271
5134992110,11cyclictest0-21swapper/121:07:471
513399216,10cyclictest0-21swapper/020:42:320
513399214,13cyclictest18760-21diskmemload22:12:340
5133992119,1cyclictest45-21kswapd023:52:250
5133992117,4cyclictest7515-21apache223:18:240
5133992114,5cyclictest7515-21apache223:16:310
5133992112,9cyclictest0-21swapper/020:38:510
5133992110,6cyclictest0-21swapper/020:05:060
5133992110,5cyclictest0-21swapper/022:31:360
513399210,18cyclictest0-21swapper/022:06:210
5134992017,2cyclictest9883-21runrttasks20:42:311
5134992017,2cyclictest899-21ntpq22:57:331
5134992017,2cyclictest8646-21taskset19:14:531
5134992017,2cyclictest18760-21diskmemload00:03:201
513399205,10cyclictest0-21swapper/019:17:270
513399203,11cyclictest0-21swapper/022:37:340
5133992019,1cyclictest0-21swapper/022:48:170
5133992017,2cyclictest817-21apache200:05:420
5133992011,4cyclictest0-21swapper/023:49:300
5133992010,9cyclictest0-21swapper/019:57:300
5133992010,4cyclictest0-21swapper/022:07:310
513399200,3cyclictest18760-21diskmemload23:28:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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