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2025-12-07 - 17:40
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 50 highest latencies:
System rack2slot7.osadl.org (updated Sun Dec 07, 2025 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
90954699451,9cyclictest1024773-21sendmail-msp10:52:590
909546994519,4cyclictest0-21swapper/011:14:150
90954699400,32cyclictest0-21swapper/012:38:100
909547993827,9cyclictest1065961-21sh11:34:261
90954799381,27cyclictest952167-21ntpq09:18:111
909548993625,9cyclictest1115143-21ssh12:28:142
909546993623,7cyclictest151ktimers/011:43:120
90954699343,30cyclictest0-21swapper/012:26:150
909546993419,0cyclictest0-21swapper/010:23:120
90954699339,2cyclictest171rcu_preempt10:08:160
909546993325,6cyclictest0-21swapper/010:16:120
909546993323,1cyclictest1100923-21ntpq12:13:120
90954699332,30cyclictest0-21swapper/011:36:120
90954699331,22cyclictest958239-21sendmail-msp09:26:120
90954699331,21cyclictest0-21swapper/011:48:130
909547993218,10cyclictest995495-21latency_hist10:11:111
90954699320,8cyclictest0-21swapper/007:16:120
909548993113,1cyclictest171rcu_preempt07:33:162
90954699319,5cyclictest171rcu_preempt09:08:320
909546993123,2cyclictest0-21swapper/009:18:100
90954699311,21cyclictest1018062-21fschecks_time10:38:080
90954699303,1cyclictest171rcu_preempt12:25:110
90954699302,4cyclictest171rcu_preempt12:33:170
90954699302,4cyclictest171rcu_preempt12:33:170
909546992920,9cyclictest1008272-21sendmail-msp10:30:180
909548992817,9cyclictest946481-21sendmail-msp09:07:242
909547992810,15cyclictest0-21swapper/110:13:121
90954699282,12cyclictest1062401-21apt-get11:31:120
909546992815,3cyclictest1042554-21grep11:08:100
90954799272,6cyclictest11050irq/107-eth%d12:18:111
90954799272,2cyclictest171rcu_preempt08:08:131
90954699273,14cyclictest0-21swapper/011:53:110
90954699272,10cyclictest11050irq/107-eth%d09:58:130
90954699272,10cyclictest11050irq/107-eth%d09:58:130
90954799265,1cyclictest171rcu_preempt07:31:111
90954799265,13cyclictest111788-21systemd-journal12:34:211
90954799265,13cyclictest111788-21systemd-journal12:34:211
909547992619,5cyclictest0-21swapper/111:13:211
909547992614,9cyclictest1094015-21sendmail-msp12:09:171
90954699261,24cyclictest14-21ksoftirqd/011:31:180
112699260,3rtkit-daemon1125-21rtkit-daemon09:40:212
909547992511,9cyclictest1059541-21sh11:28:061
90954699254,5cyclictest171rcu_preempt11:58:090
90954699253,2cyclictest171rcu_preempt10:58:150
90954699252,2cyclictest1091615-21/usr/sbin/munin12:03:120
90954699252,2cyclictest1091615-21/usr/sbin/munin12:03:120
90954699252,18cyclictest0-21swapper/010:01:520
90954699251,4cyclictest171rcu_preempt07:31:110
909546992512,2cyclictest0-21swapper/010:15:380
112699250,3rtkit-daemon1125-21rtkit-daemon11:54:292
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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