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2026-05-18 - 07:54
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackfslot7.osadl.org (updated Mon May 18, 2026 00:46:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
366909999695,1cyclictest499866-21apt-get23:10:124
366909999618,59cyclictest400645-21expr20:10:134
366909999012,59cyclictest362-21jbd2/sda2-800:35:064
36690999879,59cyclictest449935-21kworker/u32:5+events_unbound22:07:154
36690999879,59cyclictest340817-21kworker/u32:4+events_unbound19:36:054
36690999846,59cyclictest452171-21taskset21:44:354
366909997618,40cyclictest528894-21collect200:00:214
366909997516,58cyclictest531287-21/usr/sbin/munin00:05:174
366909997416,39cyclictest533746-21tune2fs00:10:154
366909997415,40cyclictest385864-21taskset19:44:334
366909997355,18cyclictest0-21swapper/422:04:354
366909997315,39cyclictest397542-21/usr/sbin/munin20:05:174
366909997254,18cyclictest61-21ksoftirqd/421:22:344
366909997234,19cyclictest481694-21ntpq22:35:174
366909997233,39cyclictest0-21swapper/420:23:274
366909997153,18cyclictest61-21ksoftirqd/421:34:404
366909997132,39cyclictest0-21swapper/419:28:034
366909997113,39cyclictest419899-21kworker/u32:1+events_unbound21:25:174
366909997051,19cyclictest491059-21kworker/4:1+events00:24:174
366909996930,39cyclictest455409-21kworker/u32:1+flush-8:022:50:574
366909996850,18cyclictest61-21ksoftirqd/423:53:084
366909996810,39cyclictest447190-21kworker/u32:0+events_unbound21:37:534
36690999679,39cyclictest463834-21kworker/u32:0+events_unbound23:39:414
36690999679,39cyclictest411441-21kworker/u32:5+events_unbound20:43:174
36690999679,19cyclictest191rcu_preempt23:45:094
36690999678,59cyclictest356084-21kworker/u32:0+events_unbound20:39:024
36690999657,39cyclictest467756-21ntpq22:10:194
36691299622,59cyclictest0-21swapper/722:15:177
36690999623,40cyclictest402989-21/usr/sbin/munin20:15:194
366909996223,20cyclictest435821-21latency_hist21:15:004
366909995819,39cyclictest0-21swapper/420:29:384
366909995637,19cyclictest0-21swapper/421:15:274
366909995618,38cyclictest61-21ksoftirqd/419:50:014
366909995618,0cyclictest191rcu_preempt19:10:194
366909995618,0cyclictest191rcu_preempt19:10:194
366909995517,19cyclictest470571-21ld22:15:204
366909995517,19cyclictest390391-21memory19:50:194
36690599550,54cyclictest0-21swapper/023:10:170
366909995435,19cyclictest430821-21kworker/u32:0+flush-8:021:08:014
366909995419,15cyclictest0-21swapper/422:42:254
366909995419,15cyclictest0-21swapper/421:54:274
366909995416,19cyclictest503138-21tune2fs23:15:154
366909995416,19cyclictest503138-21tune2fs23:15:144
366909995332,20cyclictest491408-21dpkg22:55:114
366909995319,34cyclictest0-21swapper/423:58:354
366909995319,34cyclictest0-21swapper/423:09:234
366909995319,34cyclictest0-21swapper/422:32:594
366909995319,34cyclictest0-21swapper/422:27:414
366909995319,34cyclictest0-21swapper/422:24:514
366909995319,34cyclictest0-21swapper/421:58:014
366909995319,34cyclictest0-21swapper/421:46:114
366909995319,34cyclictest0-21swapper/420:55:414
366909995319,34cyclictest0-21swapper/420:45:314
366909995319,34cyclictest0-21swapper/420:30:354
366909995319,34cyclictest0-21swapper/420:01:014
366909995319,34cyclictest0-21swapper/419:57:374
366909995319,34cyclictest0-21swapper/419:20:554
366909995319,34cyclictest0-21swapper/419:18:034
366909995319,34cyclictest0-21swapper/400:27:384
366909995319,34cyclictest0-21swapper/400:16:534
366909995319,15cyclictest0-21swapper/421:01:454
366909995319,15cyclictest0-21swapper/419:30:444
366909995315,19cyclictest423932-21ntp_states20:50:214
366909995314,39cyclictest0-21swapper/423:32:014
366909995233,19cyclictest0-21swapper/423:40:074
366909995233,19cyclictest0-21swapper/423:01:514
366909995233,19cyclictest0-21swapper/422:45:114
366909995233,19cyclictest0-21swapper/400:31:354
366909995218,15cyclictest0-21swapper/423:28:294
366909995218,15cyclictest0-21swapper/423:28:294
366908995214,19cyclictest0-21swapper/319:15:193
366905995212,39cyclictest0-21swapper/021:50:170
366912995113,19cyclictest0-21swapper/722:05:167
366909995133,18cyclictest0-21swapper/423:20:354
366909995133,18cyclictest0-21swapper/423:20:344
366911995012,19cyclictest0-21swapper/623:05:176
366905994911,19cyclictest0-21swapper/019:50:170
366905994910,19cyclictest0-21swapper/020:30:170
36691299480,1cyclictest0-21swapper/722:50:127
36690799478,38cyclictest0-21swapper/219:55:162
36690899468,19cyclictest0-21swapper/320:25:163
36690699463,19cyclictest0-21swapper/122:10:161
366905994627,19cyclictest0-21swapper/023:40:140
366912994526,19cyclictest236199-21snmpd22:25:167
36691299435,19cyclictest0-21swapper/719:40:177
36691199434,39cyclictest0-21swapper/619:30:156
36690599435,19cyclictest0-21swapper/000:05:160
36690599431,18cyclictest0-21swapper/019:35:160
36691199424,19cyclictest0-21swapper/620:55:156
36691299413,19cyclictest0-21swapper/723:30:157
36691199413,19cyclictest0-21swapper/622:00:166
36691199413,19cyclictest0-21swapper/621:05:176
36691199412,39cyclictest0-21swapper/600:10:166
36691299402,19cyclictest0-21swapper/700:20:167
36691299390,0cyclictest0-21swapper/720:05:177
366911993920,19cyclictest0-21swapper/619:25:166
36691099391,19cyclictest0-21swapper/520:25:165
36690799390,39cyclictest0-21swapper/219:40:172
36690899380,19cyclictest0-21swapper/321:55:153
366906993814,24cyclictest0-21swapper/121:05:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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