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2026-07-04 - 09:14
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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 Sat Jul 04, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2023827750,22sleep00-21swapper/019:04:150
8522710,0sleep0850-21seq22:28:430
2056726854,9sleep10-21swapper/119:07:421
65162640,1sleep10-21swapper/123:17:501
290702510,0sleep10-21swapper/121:41:401
20828993910,28cyclictest0-21swapper/100:23:051
20828993310,23cyclictest0-21swapper/121:05:111
20828993210,1cyclictest0-21swapper/100:13:551
20828993023,3cyclictest5886-21ssh22:34:001
20828992929,0cyclictest0-21swapper/122:58:461
2082899272,24cyclictest0-21swapper/122:25:581
20827992710,3cyclictest0-21swapper/000:38:300
20827992710,0cyclictest0-21swapper/019:39:040
2082899263,22cyclictest0-21swapper/123:26:051
20828992624,1cyclictest14596-21diskstats21:23:431
20827992626,0cyclictest0-21swapper/020:49:280
20827992624,1cyclictest0-21swapper/020:23:310
20827992623,2cyclictest81ktimersoftd/023:58:290
2082799261,24cyclictest0-21swapper/023:59:510
20827992610,1cyclictest0-21swapper/019:58:500
20828992510,10cyclictest0-21swapper/100:28:301
2082899250,1cyclictest0-21swapper/121:19:471
20827992510,14cyclictest18666-21kworker/0:123:06:540
94522410,2sleep00-21swapper/023:09:280
20828992410,14cyclictest0-21swapper/121:54:081
20828992410,11cyclictest0-21swapper/123:23:131
2082799242,1cyclictest91rcu_preempt22:58:410
20827992410,4cyclictest0-21swapper/019:43:430
20827992410,11cyclictest0-21swapper/021:44:410
20828992310,8cyclictest0-21swapper/121:43:421
20828992310,6cyclictest0-21swapper/123:45:181
20828992310,0cyclictest0-21swapper/123:37:021
20827992323,0cyclictest0-21swapper/019:17:580
20827992319,2cyclictest21408-21apache219:24:030
20827992317,2cyclictest0-21swapper/021:20:130
2082799231,3cyclictest91rcu_preempt22:56:510
20827992311,4cyclictest0-21swapper/022:11:100
20827992310,9cyclictest0-21swapper/020:58:480
20827992310,5cyclictest0-21swapper/022:34:420
20827992310,12cyclictest0-21swapper/022:50:370
2082899222,19cyclictest0-21swapper/122:01:151
20828992217,4cyclictest802-21apache222:53:121
20828992215,3cyclictest20825-21cyclictest23:57:071
20828992210,6cyclictest0-21swapper/119:08:441
20827992220,1cyclictest0-21swapper/021:27:280
20827992219,2cyclictest21408-21apache222:43:510
20827992215,4cyclictest21408-21apache200:20:440
20827992215,0cyclictest100450irq/109-eth1-tx22:02:060
20827992213,5cyclictest0-21swapper/000:13:480
20827992211,7cyclictest0-21swapper/023:28:310
20827992211,3cyclictest19850-21kworker/u4:121:43:070
20827992210,3cyclictest0-21swapper/020:33:300
2082899216,11cyclictest0-21swapper/100:03:471
2082899214,10cyclictest0-21swapper/122:28:401
2082899214,10cyclictest0-21swapper/119:48:421
20828992113,4cyclictest21424-21apache222:15:551
20828992110,6cyclictest0-21swapper/122:18:411
2082899210,11cyclictest0-21swapper/122:43:441
20827992121,0cyclictest0-21swapper/000:11:300
20827992120,1cyclictest0-21swapper/023:46:120
20827992119,2cyclictest21408-21apache220:45:590
2082799211,3cyclictest0-21swapper/021:49:170
20827992110,6cyclictest0-21swapper/021:28:420
20827992110,5cyclictest0-21swapper/022:13:380
2082799210,17cyclictest11542-21kworker/0:220:15:060
2082899204,11cyclictest0-21swapper/120:48:441
2082899203,12cyclictest0-21swapper/123:48:461
2082899201,7cyclictest2066-21diskmemload21:30:181
20828992010,8cyclictest0-21swapper/119:20:531
20828992010,4cyclictest0-21swapper/120:23:441
20828992010,1cyclictest0-21swapper/123:12:061
2082899200,10cyclictest0-21swapper/123:03:461
2082799207,7cyclictest0-21swapper/023:38:350
2082799202,3cyclictest91rcu_preempt23:33:470
20827992019,1cyclictest7-21ksoftirqd/021:16:040
2082799201,5cyclictest0-21swapper/000:06:140
20827992014,2cyclictest22547-21/usr/sbin/munin21:33:460
20827992010,7cyclictest0-21swapper/019:22:520
20827992010,3cyclictest0-21swapper/023:31:210
2082799200,0cyclictest0-21swapper/000:25:050
1617222010,0sleep10-21swapper/122:06:291
877921910,0sleep10-21swapper/100:01:441
2082899194,7cyclictest0-21swapper/120:38:431
2082899193,9cyclictest0-21swapper/119:53:481
2082899193,10cyclictest0-21swapper/119:38:431
2082899192,6cyclictest0-21swapper/100:29:321
20828991917,1cyclictest321012sleep120:59:081
20828991917,1cyclictest0-21swapper/119:43:491
20828991910,9cyclictest0-21swapper/100:11:071
20828991910,7cyclictest0-21swapper/120:03:411
20828991910,4cyclictest0-21swapper/100:37:361
20828991910,3cyclictest0-21swapper/121:09:571
2082899190,4cyclictest15876-21sendmail_mailtr23:28:491
20827991918,0cyclictest7-21ksoftirqd/022:28:300
20827991917,1cyclictest7-21ksoftirqd/022:03:400
2082799191,12cyclictest7957-21pmu-power23:18:480
20827991910,4cyclictest0-21swapper/020:38:450
20827991910,4cyclictest0-21swapper/019:30:390
20827991910,3cyclictest0-21swapper/022:20:510
20827991910,2cyclictest0-21swapper/021:53:350
20827991910,1cyclictest0-21swapper/019:48:500
2082899183,7cyclictest0-21swapper/121:48:431
2082899183,12cyclictest0-21swapper/120:33:431
20828991810,7cyclictest0-21swapper/123:40:191
20828991810,4cyclictest0-21swapper/122:54:251
20828991810,4cyclictest0-21swapper/119:33:411
20828991810,3cyclictest0-21swapper/120:18:431
20828991810,3cyclictest0-21swapper/120:10:091
2082799184,8cyclictest0-21swapper/023:13:420
2082799181,9cyclictest0-21swapper/019:08:430
20827991810,5cyclictest0-21swapper/022:38:360
20827991810,1cyclictest0-21swapper/019:53:310
2082799180,1cyclictest91rcu_preempt00:28:400
2838821710,0sleep10-21swapper/119:28:191
2082899175,8cyclictest0-21swapper/120:13:421
20828991710,7cyclictest0-21swapper/120:00:111
20828991710,7cyclictest0-21swapper/119:13:331
20828991710,4cyclictest0-21swapper/121:17:121
20828991710,4cyclictest0-21swapper/120:53:481
20828991710,4cyclictest0-21swapper/119:28:471
20828991710,3cyclictest0-21swapper/122:38:431
2082799173,8cyclictest0-21swapper/020:33:410
2082799171,9cyclictest29539-21/usr/sbin/munin20:53:470
2082799170,2cyclictest30901-21df_inode23:48:430
2082899162,6cyclictest17616-21/usr/sbin/munin22:08:431
20828991611,2cyclictest0-21swapper/120:28:411
20828991610,4cyclictest0-21swapper/121:34:031
2082899160,8cyclictest0-21swapper/120:43:461
20827991613,3cyclictest21408-21apache221:08:490
20827991612,2cyclictest744-21snmpd19:37:460
2082799161,10cyclictest0-21swapper/020:03:420
20827991610,2cyclictest0-21swapper/020:09:200
20827991610,1cyclictest0-21swapper/020:23:450
2082799160,4cyclictest91rcu_preempt21:03:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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