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2026-08-13 - 10:12
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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 Thu Aug 13, 2026 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3126727153,7sleep00-21swapper/019:06:290
3106127053,7sleep10-21swapper/119:04:201
306802680,0sleep10-21swapper/122:18:071
31612994010,29cyclictest0-21swapper/123:48:271
31612993810,27cyclictest0-21swapper/119:13:271
31611993635,1cyclictest7-21ksoftirqd/023:53:100
31612993410,4cyclictest0-21swapper/119:18:201
31612993310,19cyclictest0-21swapper/123:10:551
31611993310,2cyclictest0-21swapper/022:06:210
3161299324,4cyclictest24880-21ntp_states21:23:291
31612993232,0cyclictest0-21swapper/123:05:541
31612993210,17cyclictest0-21swapper/120:04:271
31612993210,15cyclictest0-21swapper/120:08:201
3161299320,8cyclictest0-21swapper/121:38:241
31611993231,1cyclictest7-21ksoftirqd/019:08:250
31612993110,20cyclictest0-21swapper/122:25:561
31611993129,1cyclictest7-21ksoftirqd/020:08:100
3161199312,5cyclictest12793-21diskmemload23:38:390
31611993110,5cyclictest0-21swapper/022:08:550
31612993010,19cyclictest0-21swapper/122:08:261
31612993010,12cyclictest0-21swapper/122:47:121
3161299300,1cyclictest0-21swapper/121:22:211
31611993030,0cyclictest0-21swapper/022:50:020
3161299290,6cyclictest20883-21ssh23:33:471
31611992910,1cyclictest91rcu_preempt20:13:260
3161299283,5cyclictest0-21swapper/122:32:091
3161299282,7cyclictest0-21swapper/100:23:211
3161299280,8cyclictest0-21swapper/100:00:481
3161199283,3cyclictest91rcu_preempt21:20:190
3161299273,5cyclictest0-21swapper/119:53:221
31612992712,10cyclictest0-21swapper/121:33:231
3161299271,11cyclictest0-21swapper/123:53:231
3161199274,6cyclictest7-21ksoftirqd/021:39:140
3161199273,2cyclictest91rcu_preempt00:37:580
31611992725,1cyclictest18562-21ssh21:59:490
31611992720,3cyclictest7-21ksoftirqd/021:47:200
31611992715,4cyclictest7-21ksoftirqd/000:18:430
31611992710,10cyclictest0-21swapper/020:23:220
31612992610,10cyclictest0-21swapper/120:58:221
3161299260,10cyclictest0-21swapper/122:48:201
31611992621,4cyclictest7-21ksoftirqd/019:18:270
31611992616,7cyclictest7-21ksoftirqd/022:18:470
3161299251,5cyclictest0-21swapper/123:42:431
3161299251,4cyclictest0-21swapper/122:43:001
3161299250,6cyclictest0-21swapper/122:59:471
3161199255,4cyclictest91rcu_preempt19:48:220
31611992522,2cyclictest7-21ksoftirqd/000:27:110
31611992517,4cyclictest7-21ksoftirqd/023:08:390
31611992515,4cyclictest91rcu_preempt19:53:220
3161299243,10cyclictest0-21swapper/119:08:271
3161299241,4cyclictest29038-21sh23:46:031
31612992410,13cyclictest0-21swapper/119:43:211
3161299240,5cyclictest24479-21snmpd21:59:271
3161199245,5cyclictest91rcu_preempt21:27:110
3161199242,2cyclictest91rcu_preempt22:31:530
31611992419,2cyclictest7-21ksoftirqd/021:33:320
31611992415,6cyclictest19776-21apache222:16:530
31611992413,4cyclictest7-21ksoftirqd/022:39:140
31611992411,5cyclictest7-21ksoftirqd/023:31:570
3161299237,9cyclictest0-21swapper/100:09:031
31612992314,7cyclictest100350irq/108-eth1-tx23:23:241
31612992310,7cyclictest0-21swapper/121:43:301
31611992321,1cyclictest4894-21apache_volume23:58:210
31611992320,2cyclictest27304-21memory23:43:260
31611992320,1cyclictest7-21ksoftirqd/023:14:400
31611992319,3cyclictest31416-21taskset20:29:510
31611992319,3cyclictest19634-21forks23:33:220
31611992319,3cyclictest13727-21ssh00:11:350
31611992319,2cyclictest7-21ksoftirqd/021:15:380
3161199230,20cyclictest0-21swapper/000:31:330
3161299223,9cyclictest20620-21/usr/sbin/munin22:03:231
3161299222,11cyclictest0-21swapper/123:28:271
31612992217,3cyclictest19776-21apache200:03:341
3161299221,6cyclictest19289-21awk19:58:271
31612992210,4cyclictest0-21swapper/119:48:221
3161199224,10cyclictest0-21swapper/000:03:130
3161199223,12cyclictest0-21swapper/020:43:220
31611992218,3cyclictest11419-21idleruntime21:03:230
31611992216,6cyclictest0-21swapper/023:03:230
31611992214,7cyclictest5432-21ssh22:28:000
31611992210,3cyclictest0-21swapper/000:16:520
874722110,1sleep00-21swapper/023:18:140
3161299215,13cyclictest0-21swapper/100:13:271
3161299214,10cyclictest0-21swapper/121:03:221
3161299212,2cyclictest0-21swapper/121:48:291
31612992117,3cyclictest31609-21cyclictest21:57:151
31612992110,4cyclictest0-21swapper/123:13:211
3161199215,4cyclictest91rcu_preempt21:49:320
3161199212,2cyclictest0-21swapper/023:02:030
31611992119,1cyclictest12697-21apache_processe19:43:230
31611992118,2cyclictest13254-21diskstats21:08:230
31611992118,2cyclictest0-21swapper/019:15:180
31611992114,6cyclictest0-21swapper/022:43:280
31611992110,5cyclictest0-21swapper/023:27:120
3161199210,1cyclictest91rcu_preempt21:57:250
3161299206,10cyclictest0-21swapper/119:33:211
3161299205,14cyclictest636-21nscd22:34:501
3161299203,10cyclictest0-21swapper/100:18:261
3161299202,11cyclictest0-21swapper/119:23:211
31612992018,1cyclictest231ktimersoftd/123:19:401
31612992010,6cyclictest0-21swapper/122:18:211
31612992010,4cyclictest0-21swapper/122:55:001
3161299200,13cyclictest0-21swapper/100:33:231
3161199203,10cyclictest0-21swapper/020:53:270
31611992018,1cyclictest468-21python20:33:300
31611992018,1cyclictest11409-21memory19:38:260
31611992017,2cyclictest9241-21ls20:58:200
31611992017,2cyclictest5601-21expr19:23:260
31611992017,2cyclictest29355-21ssh21:29:160
31611992017,2cyclictest27347-21/usr/sbin/munin20:18:300
31611992016,3cyclictest239762sleep020:12:180
31611992014,5cyclictest1414-21df23:53:230
3016422010,0sleep10-21swapper/121:31:021
1972522010,0sleep10-21swapper/121:16:541
31612991917,1cyclictest0-21swapper/119:29:171
31612991914,3cyclictest19802-21apache221:09:101
31612991910,4cyclictest0-21swapper/119:38:271
31612991910,2cyclictest0-21swapper/120:34:401
3161199195,9cyclictest0-21swapper/022:53:200
31611991917,2cyclictest19370-21processes19:58:280
31611991910,5cyclictest0-21swapper/022:33:210
3161299182,6cyclictest0-21swapper/120:53:311
3161299182,14cyclictest0-21swapper/120:43:281
31612991810,5cyclictest0-21swapper/100:28:221
3161199187,3cyclictest81ktimersoftd/019:28:210
31611991816,1cyclictest5909-21ls20:48:260
3161199180,10cyclictest0-21swapper/020:38:230
3161299173,8cyclictest0-21swapper/120:48:211
3161199178,7cyclictest0-21swapper/019:33:280
3161299162,7cyclictest0-21swapper/120:18:211
31612991611,2cyclictest0-21swapper/120:25:441
31612991610,2cyclictest0-21swapper/120:13:391
3161299154,5cyclictest0-21swapper/120:28:331
3161299146,4cyclictest2724-21grep20:38:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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