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2026-07-28 - 13:22
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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 Tue Jul 28, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
85226946,19sleep10-21swapper/119:06:301
27802680,0sleep10-21swapper/121:33:351
3169326552,9sleep00-21swapper/019:03:290
296632650,1sleep00-21swapper/000:18:370
1236993610,23cyclictest0-21swapper/121:43:011
1235993629,5cyclictest91rcu_preempt22:00:370
1235993535,0cyclictest7-21ksoftirqd/021:43:400
1235993532,2cyclictest23404-21ntp_states22:43:360
1235993431,2cyclictest20096-21/usr/sbin/munin21:13:380
1235993411,2cyclictest91rcu_preempt22:03:290
1235993330,2cyclictest7167-21awk23:48:360
1235993330,2cyclictest17810-21apache_processe00:03:310
1235993330,2cyclictest14374-21ntp_states21:48:360
1235993329,3cyclictest5694-21tune2fs20:43:330
1235993329,3cyclictest31055-21/usr/sbin/munin20:23:380
1235993229,2cyclictest4625-21ntp_states00:28:370
1235993229,2cyclictest22745-21perl20:03:320
1235993229,2cyclictest20435-21ssh21:57:220
1235993229,2cyclictest12581-21/usr/sbin/munin22:28:400
1235993228,3cyclictest28189-21apache_accesses20:18:300
1235993214,13cyclictest9536-21irqstats19:28:350
1236993110,0cyclictest0-21swapper/100:21:561
1235993131,0cyclictest0-21swapper/023:04:150
1235993129,1cyclictest16348-21apache_accesses23:18:290
1235993128,2cyclictest1729-21pidof21:33:070
1235993128,2cyclictest1259-21apache_processe19:08:310
1235993128,2cyclictest1103-21runrttasks23:40:220
1235993128,2cyclictest0-21swapper/022:16:030
1235993128,2cyclictest0-21swapper/021:23:370
1235993127,3cyclictest6800-21chrt19:22:440
1235993127,3cyclictest10652-21rm22:27:150
1235993126,4cyclictest8319-21grep19:23:390
1235993120,10cyclictest21290-21python23:23:390
1235993119,1cyclictest81ktimersoftd/022:37:090
1236993010,16cyclictest0-21swapper/121:54:491
1235993028,1cyclictest28898-21diskstats22:08:300
1235993028,1cyclictest23713-21memory21:18:340
1235993027,2cyclictest27506-21ls22:48:380
1235993027,2cyclictest20241-21chrt19:57:300
1235993027,2cyclictest14876-21diskmemload23:53:270
1235993027,2cyclictest14876-21diskmemload00:08:250
1235993027,2cyclictest0-21swapper/020:53:410
1235993020,2cyclictest7-21ksoftirqd/000:23:390
1235993016,9cyclictest2952-21/usr/sbin/munin23:43:310
1235993013,11cyclictest6121-21grep21:38:290
1235993011,2cyclictest91rcu_preempt21:09:250
104723026,2sleep10-21swapper/119:08:181
1235992927,2cyclictest995-21ssh22:58:140
1235992926,2cyclictest7713-21http_loadtime20:48:320
1235992926,2cyclictest3697-21/usr/sbin/munin22:18:300
1235992926,2cyclictest32254-21fschecks_count20:28:320
1235992926,2cyclictest26773-21if_eth320:13:340
1235992926,2cyclictest21586-21ssh22:41:420
1235992926,2cyclictest16481-21taskset19:48:090
1235992926,2cyclictest15040-21seq23:16:050
1235992926,2cyclictest14876-21diskmemload00:36:350
1235992926,2cyclictest0-21swapper/023:31:130
1235992925,3cyclictest4846-21taskset19:17:320
1235992923,3cyclictest7-21ksoftirqd/023:33:400
1236992810,5cyclictest0-21swapper/121:23:301
1235992826,2cyclictest0-21swapper/021:33:300
1235992826,1cyclictest8932-21apache_processe23:08:310
1235992826,1cyclictest4238-21ntp_states20:38:350
1235992825,2cyclictest0-21swapper/000:13:280
1235992819,8cyclictest16669-21apache_volume19:48:300
1235992813,13cyclictest0-21swapper/023:58:340
1236992722,5cyclictest0-21swapper/100:34:491
1236992710,1cyclictest0-21swapper/120:17:271
1235992725,2cyclictest0-21swapper/020:08:410
1235992724,2cyclictest20524-21wc19:58:310
1235992724,2cyclictest0-21swapper/023:00:420
123699264,21cyclictest15362-21diskstats22:33:321
1236992610,12cyclictest0-21swapper/100:08:081
1236992610,11cyclictest0-21swapper/123:17:261
1235992624,1cyclictest13856-21python19:38:390
1235992623,2cyclictest0-21swapper/019:33:320
1236992520,4cyclictest7306-21apache221:11:421
1236992511,8cyclictest100150irq/106-eth1-rx23:11:361
1236992510,1cyclictest0-21swapper/121:29:051
123699250,8cyclictest0-21swapper/100:23:401
1236992418,4cyclictest7306-21apache223:52:451
123699235,11cyclictest0-21swapper/123:18:351
1236992320,2cyclictest0-21swapper/121:43:551
1236992318,4cyclictest7335-21apache220:28:391
1236992310,3cyclictest0-21swapper/120:33:331
1236992310,12cyclictest0-21swapper/123:43:521
1236992217,5cyclictest7306-21apache221:48:521
1236992211,4cyclictest7306-21apache200:28:241
1236992210,9cyclictest100250irq/107-eth1-rx22:52:401
123599222,12cyclictest0-21swapper/020:33:350
1235992220,2cyclictest0-21swapper/021:03:400
1235992210,9cyclictest0-21swapper/021:00:080
123699215,12cyclictest0-21swapper/122:58:301
123699213,10cyclictest0-21swapper/122:28:201
1236992119,1cyclictest0-21swapper/122:27:351
1236992113,3cyclictest231ktimersoftd/123:56:341
1236992110,5cyclictest0-21swapper/122:00:331
1236992110,5cyclictest0-21swapper/120:09:131
123699206,8cyclictest0-21swapper/119:53:341
123699205,6cyclictest30771-21/usr/sbin/munin22:53:381
123699205,10cyclictest0-21swapper/120:43:311
1236992018,1cyclictest19067-21fschecks_time22:38:321
1236992017,2cyclictest7306-21apache220:50:041
1236992010,7cyclictest0-21swapper/122:08:361
1236992010,4cyclictest25491-21ssh00:13:331
1236992010,4cyclictest0-21swapper/123:27:291
1236992010,4cyclictest0-21swapper/122:20:561
1236992010,3cyclictest0-21swapper/123:28:271
1236992010,3cyclictest0-21swapper/119:44:021
123699196,11cyclictest0-21swapper/121:18:341
1236991917,1cyclictest22429-21apache_volume20:03:301
1236991916,2cyclictest13380-21grep21:03:331
1236991910,6cyclictest24765-21kworker/u4:023:59:071
1236991910,4cyclictest0-21swapper/122:43:281
1236991910,1cyclictest0-21swapper/100:10:511
123699186,11cyclictest0-21swapper/119:38:371
123699183,8cyclictest0-21swapper/121:13:351
123699182,7cyclictest0-21swapper/122:03:391
1236991810,7cyclictest0-21swapper/120:20:311
1236991810,5cyclictest0-21swapper/120:38:291
1236991810,3cyclictest0-21swapper/123:39:321
1236991810,3cyclictest0-21swapper/123:33:331
1236991810,3cyclictest0-21swapper/119:18:281
123699177,4cyclictest14876-21diskmemload23:03:201
123699174,7cyclictest0-21swapper/119:58:381
123699174,10cyclictest0-21swapper/119:48:381
123699173,7cyclictest399-21chrt22:13:341
123699171,7cyclictest0-21swapper/120:53:411
1236991716,0cyclictest0-21swapper/120:58:371
1236991710,4cyclictest0-21swapper/120:23:411
1236991710,2cyclictest0-21swapper/119:14:591
123699162,6cyclictest0-21swapper/119:33:341
1236991612,4cyclictest0-21swapper/119:23:511
1236991610,2cyclictest0-21swapper/119:28:351
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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