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2026-06-27 - 17:03
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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 rack0slot2.osadl.org (updated Sat Jun 27, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
389299025646,7sleep50-21swapper/507:06:585
388388424433,7sleep40-21swapper/407:04:254
3893472994339,3cyclictest36781-21kworker/u16:1+flush-8:009:59:196
38928802435,32sleep70-21swapper/707:05:247
3893466994038,2cyclictest3845280-21kworker/u16:4+flush-8:007:29:355
3893466993937,2cyclictest318464-21kworker/u16:0+events_unbound11:47:115
3893466993836,2cyclictest4192812-21kworker/u16:0+events_unbound10:42:595
3893466993836,2cyclictest4101690-21kworker/u16:4+events_unbound09:39:585
3893466993836,2cyclictest160869-21kworker/u16:2+events_unbound10:50:465
3893466993735,2cyclictest4192812-21kworker/u16:0+events_unbound11:10:255
3893466993735,2cyclictest4192812-21kworker/u16:0+events_unbound09:55:595
3893466993735,2cyclictest4101690-21kworker/u16:4+events_unbound09:29:035
3893466993735,2cyclictest333339-21kworker/u16:1+events_unbound12:30:225
3893466993735,2cyclictest318464-21kworker/u16:0+events_unbound11:43:225
3893466993735,2cyclictest271585-21kworker/u16:4+events_unbound12:05:315
3893466993735,2cyclictest135666-21kworker/u16:4+events_unbound11:06:465
3893466993734,2cyclictest333339-21kworker/u16:1+events_unbound12:19:225
3893466993734,2cyclictest333339-21kworker/u16:1+events_unbound12:19:225
3893466993634,2cyclictest4192812-21kworker/u16:0+flush-8:010:15:185
3893466993634,2cyclictest271585-21kworker/u16:4+events_unbound12:35:315
3893466993634,2cyclictest271585-21kworker/u16:4+events_unbound12:16:265
3893466993634,2cyclictest135666-21kworker/u16:4+events_unbound10:32:105
3893466993634,2cyclictest10369-21kworker/u16:2+events_unbound09:47:235
3893466993633,2cyclictest318464-21kworker/u16:0+events_unbound11:59:225
3893466993533,2cyclictest97689-21kworker/u16:1+events_unbound10:39:055
3893466993533,2cyclictest4192812-21kworker/u16:0+events_unbound09:53:545
3893466993533,2cyclictest4155945-21kworker/u16:5+flush-8:009:22:465
3893466993533,2cyclictest4101690-21kworker/u16:4+flush-8:009:30:275
3893466993533,2cyclictest4087617-21kworker/u16:0+flush-8:008:54:475
3893466993533,2cyclictest4087617-21kworker/u16:0+flush-8:008:54:475
3893466993533,2cyclictest4018407-21kworker/u16:3+events_unbound09:11:555
3893466993533,2cyclictest3903177-21kworker/u16:2+events_unbound07:20:435
3893466993533,2cyclictest3903177-21kworker/u16:2+events_unbound07:20:435
3893466993533,2cyclictest359276-21kworker/u16:2+events_unbound12:10:135
3893466993533,2cyclictest271585-21kworker/u16:4+flush-8:011:50:025
3893466993533,2cyclictest271585-21kworker/u16:4+flush-8:011:35:105
3893466993533,2cyclictest247300-21kworker/u16:1+events_unbound11:29:345
3893466993533,2cyclictest247300-21kworker/u16:1+events_unbound11:22:065
3893466993533,2cyclictest135666-21kworker/u16:4+events_unbound11:02:145
3893466993533,2cyclictest10369-21kworker/u16:2+flush-8:010:22:095
3893466993533,2cyclictest10369-21kworker/u16:2+events_unbound10:27:195
3893466993533,2cyclictest10369-21kworker/u16:2+events_unbound10:08:355
3893466993532,2cyclictest4192812-21kworker/u16:0+events_unbound10:54:235
128052350,0chrt12804-21diskstats09:39:327
3893466993432,2cyclictest61395-21kworker/u16:5+events_unbound10:12:595
3893466993432,2cyclictest4192812-21kworker/u16:0+events_unbound11:15:435
3893466993432,2cyclictest4192812-21kworker/u16:0+events_unbound10:46:465
3893466993432,2cyclictest4033820-21kworker/u16:4+flush-8:008:24:455
3893466993432,2cyclictest333339-21kworker/u16:1+events_unbound12:27:465
3893466993432,2cyclictest333339-21kworker/u16:1+events_unbound11:57:215
3893466993432,2cyclictest271585-21kworker/u16:4+events_unbound11:26:385
1164302340,1chrt116431-21ssh10:19:397
3893475993326,6cyclictest4033427-21latency_hist08:19:207
389347599330,31cyclictest185006-21latency_hist10:49:197
3893466993230,2cyclictest3945620-21kworker/u16:1+events_unbound08:09:195
3893466993230,2cyclictest10369-21kworker/u16:2+events_unbound10:01:515
3893466993229,2cyclictest4018407-21kworker/u16:3+events_unbound08:49:385
389287923222,7sleep60-21swapper/607:05:236
3893466993129,2cyclictest4033621-21kworker/u16:1+flush-8:009:35:225
1579322310,1chrt157931-21ssh10:35:107
3893466993028,2cyclictest3975184-21kworker/u16:4+flush-8:007:49:435
3893466992927,2cyclictest4152949-21kworker/u16:0+events_unbound09:15:305
3893466992927,2cyclictest4018407-21kworker/u16:3+events_unbound08:19:465
3893466992926,2cyclictest3903175-21kworker/u16:0+flush-8:007:39:215
3893466992826,2cyclictest4101690-21kworker/u16:4+events_unbound09:07:395
3893466992826,2cyclictest3903177-21kworker/u16:2+flush-8:007:54:465
741702270,1chrt74171-21ssh10:04:247
3893466992725,2cyclictest3873846-21kworker/u16:1+flush-8:007:14:495
3893475992621,4cyclictest370360-21latency_hist12:04:197
3893466992623,2cyclictest3961367-21kworker/u16:3+flush-8:007:44:305
3893475992519,5cyclictest3984790-21latency_hist07:54:197
3893466992422,2cyclictest3945620-21kworker/u16:1+events_unbound07:59:485
3893466992422,2cyclictest3903177-21kworker/u16:2+events_unbound08:11:305
41029722230,0chrt0-21swapper/608:54:356
41029722230,0chrt0-21swapper/608:54:356
3893472992219,2cyclictest97689-21kworker/u16:1+flush-8:010:39:306
3893472992219,2cyclictest61395-21kworker/u16:5+flush-8:010:04:506
3893466992217,2cyclictest4018407-21kworker/u16:3+flush-8:008:59:355
3893475992116,4cyclictest432129-21latency_hist12:29:197
3893472992120,1cyclictest359276-21kworker/u16:2+events_unbound12:36:426
3893472992119,2cyclictest3873846-21kworker/u16:1+flush-8:007:14:196
3893466992119,2cyclictest4018407-21kworker/u16:3+events_unbound08:18:305
3893472991917,2cyclictest4033621-21kworker/u16:1+flush-8:008:49:506
389347599180,17cyclictest0-21swapper/707:16:287
3893466991816,2cyclictest4018407-21kworker/u16:3+events_unbound08:43:195
3893475991714,2cyclictest1278-21snmpd07:25:207
3893466991715,2cyclictest4072076-21kworker/u16:2+events_unbound08:36:465
3893466991715,2cyclictest4048206-21kworker/u16:0+flush-8:008:30:235
3893466991715,2cyclictest3845280-21kworker/u16:4+events_unbound07:27:395
3893475991614,1cyclictest0-21swapper/711:19:457
3893475991611,4cyclictest135629-21latency_hist10:29:197
3893475991610,5cyclictest3965342-21latency_hist07:44:207
3893475991610,5cyclictest209739-21latency_hist10:59:197
3893472991615,1cyclictest10369-21kworker/u16:2+events_unbound10:19:386
3893466991614,2cyclictest3845280-21kworker/u16:4+events_unbound07:13:195
3893475991513,1cyclictest432628-21/usr/sbin/munin12:29:427
3893475991513,1cyclictest147127-21ssh10:32:527
3893475991512,2cyclictest1278-21snmpd12:08:047
3893475991512,2cyclictest0-21swapper/710:59:197
3893475991512,2cyclictest0-21swapper/707:29:457
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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