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2026-07-04 - 17:25
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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 50 highest latencies:
System rack0slot2.osadl.org (updated Sat Jul 04, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9215242910,0sleep50-21swapper/508:34:135
74326424434,7sleep50-21swapper/507:05:205
74351324232,7sleep40-21swapper/407:08:484
7417622393,30sleep70-21swapper/707:04:177
743800993837,1cyclictest1150812-21kworker/u16:7+events_unbound10:19:134
743809993633,2cyclictest895164-21sed08:24:087
743809993529,5cyclictest844904-21latency_hist07:58:517
743800993534,1cyclictest1164925-21kworker/u16:0+events_unbound10:26:174
743800993532,2cyclictest1054826-21kworker/u16:3+events_unbound09:39:054
743800993432,2cyclictest1469688-21kworker/u16:3+events_unbound12:33:504
743809993332,0cyclictest0-21swapper/710:59:287
743809993330,2cyclictest1332182-21ps11:29:227
74380999330,31cyclictest971928-21cat09:04:047
743800993331,2cyclictest1262377-21kworker/u16:2+events_unbound11:38:514
74334923221,8sleep60-21swapper/607:06:336
743804993129,2cyclictest714852-21kworker/u16:0+flush-8:008:19:166
743800993129,2cyclictest743570-21kworker/u16:3+flush-8:007:39:224
743800993129,2cyclictest743570-21kworker/u16:3+flush-8:007:39:224
743800993129,2cyclictest1286430-21kworker/u16:4+events_unbound11:24:254
743800993127,3cyclictest1334137-21kworker/u16:3+flush-8:011:38:514
743809993028,1cyclictest1138000-21ssh10:10:197
743809993027,2cyclictest923987-21ip_192.168.115.08:39:077
743809993026,3cyclictest1289539-21grep11:14:117
743804993027,2cyclictest1127725-21kworker/u16:3+events_unbound10:15:576
11469022300,1chrt0-21swapper/510:14:145
743809992928,0cyclictest0-21swapper/709:27:357
743800992927,2cyclictest1002669-21kworker/u16:4+flush-8:009:24:054
743800992925,3cyclictest1422167-21kworker/u16:5+flush-8:012:18:514
11590652290,1chrt1159066-21kthreadcore10:19:137
743809992827,0cyclictest0-21swapper/711:46:077
743809992827,0cyclictest0-21swapper/710:43:037
743809992827,0cyclictest0-21swapper/710:02:327
743809992726,0cyclictest0-21swapper/712:10:407
743809992726,0cyclictest0-21swapper/709:57:397
743809992726,0cyclictest0-21swapper/708:54:077
743800992724,3cyclictest893565-21kworker/u16:1+flush-8:009:09:174
743800992724,3cyclictest893565-21kworker/u16:1+flush-8:009:09:174
8291002260,1sleep40-21swapper/407:49:094
743809992625,0cyclictest0-21swapper/712:08:437
743809992625,0cyclictest0-21swapper/710:45:597
743809992625,0cyclictest0-21swapper/709:09:547
743809992625,0cyclictest0-21swapper/709:09:547
743809992624,1cyclictest1151856-21ssh10:18:167
743800992624,2cyclictest1444883-21kworker/u16:2+flush-8:012:19:214
14939722260,1chrt1493973-21cat12:38:517
743809992524,0cyclictest0-21swapper/710:31:127
743809992524,0cyclictest0-21swapper/710:31:127
743809992524,0cyclictest0-21swapper/709:52:117
743809992524,0cyclictest0-21swapper/709:52:117
743809992524,0cyclictest0-21swapper/709:32:237
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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