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2026-04-21 - 19:18
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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 rack5slot2.osadl.org (updated Tue Apr 21, 2026 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
169672206191,11sleep10-21swapper/107:09:361
167082205171,12sleep30-21swapper/307:06:183
167452199182,13sleep00-21swapper/007:06:470
167122184167,13sleep20-21swapper/207:06:202
97112490,0sleep20-21swapper/211:30:152
22402480,0sleep10-21swapper/111:10:201
230372440,0sleep30-21swapper/312:08:503
191332440,0sleep30-21swapper/310:31:063
226622420,0sleep10-21swapper/112:08:371
156132410,0sleep10-21swapper/111:33:171
118242410,0sleep10-21swapper/110:11:591
7942390,0sleep20-21swapper/210:22:322
217072130,0sleep20-21swapper/210:32:422
1720299120,1cyclictest9333-21diskstats11:30:133
1720299110,1cyclictest31916-21ssh10:37:413
1720299100,1cyclictest26610-21ssh11:22:383
1720299100,1cyclictest26032-21rm09:47:193
1720299100,1cyclictest14912-21ntp_states09:10:183
1718699102,4cyclictest2889-21idleruntime-cro08:50:000
172029993,6cyclictest5068-21ssh12:00:093
172029990,8cyclictest749-21df09:35:143
172029990,1cyclictest4116-21ssh09:52:293
172029990,1cyclictest32308-21rm11:57:063
172029990,1cyclictest19471-21ssh09:28:363
172029990,1cyclictest1641-21irqstats08:45:143
172029990,1cyclictest0-21swapper/310:50:133
172029990,0cyclictest554-21ssh12:29:593
172029980,7cyclictest5301-21ssh10:55:593
172029980,7cyclictest32286-21grep11:25:173
172029980,7cyclictest2962-21memory09:20:163
172029980,7cyclictest18973-21/usr/sbin/munin11:35:193
172029980,1cyclictest9963-21ssh12:34:333
172029980,1cyclictest7092-21/usr/sbin/munin11:45:183
172029980,1cyclictest4621-21df10:40:143
172029980,1cyclictest26846-21cron11:55:013
172029980,1cyclictest26176-21diskstats08:30:153
172029980,1cyclictest2031-21ssh10:07:153
172029980,1cyclictest19752-21munin-node07:15:023
172029980,1cyclictest19449-21ssh12:22:513
172029980,1cyclictest16282-21ssh09:58:413
172029980,1cyclictest16282-21ssh09:58:403
172029980,1cyclictest15888-21sh10:14:283
172029980,1cyclictest14964-21tune2fs10:45:133
172029980,1cyclictest13938-21ssh11:16:053
172029980,1cyclictest12155-21grep09:40:193
172029980,0cyclictest48422sleep311:11:453
172029980,0cyclictest23179-21apt-get08:25:123
172029980,0cyclictest0-21swapper/309:05:203
25788270,1sleep11719099cyclictest07:25:121
172029975,2cyclictest0-21swapper/307:45:203
172029971,1cyclictest15910-21ssh11:01:123
172029971,0cyclictest0-21swapper/312:35:133
172029970,7cyclictest8836-21diskstats07:55:123
172029970,1cyclictest8034-21ls09:00:003
172029970,1cyclictest7385-21grep10:25:223
172029970,1cyclictest5372-21awk08:55:003
172029970,1cyclictest3737-21diskstats12:15:133
172029970,1cyclictest32090-21ls09:35:023
172029970,1cyclictest31874-21ntp_states08:40:193
172029970,1cyclictest31175-21grep07:35:153
172029970,1cyclictest28949-21which08:35:153
172029970,1cyclictest28416-21ssh09:16:513
172029970,1cyclictest28121-21diskstats10:20:143
172029970,1cyclictest26089-21cut12:10:143
172029970,1cyclictest25484-21apt-get07:25:113
172029970,1cyclictest21406-21sort08:20:123
172029970,1cyclictest205-21systemd-journal09:05:013
172029970,1cyclictest19570-21diskstats10:00:133
172029970,1cyclictest19150-21cat08:15:153
172029970,1cyclictest17449-21/usr/sbin/munin07:10:133
172029970,1cyclictest16823-21memory08:10:163
172029970,1cyclictest15511-21munin-run08:10:013
172029970,0cyclictest679-21apt-get07:40:133
172029970,0cyclictest23306-21fschecks_count11:05:143
172029970,0cyclictest0-21swapper/311:40:113
172029970,0cyclictest0-21swapper/310:15:113
171869970,3cyclictest22801-21sendmail-msp07:20:000
172029960,1cyclictest23194-21cat07:20:133
172029960,1cyclictest10797-21apt08:00:113
172029960,0cyclictest5637-21apt-get07:50:113
172029960,0cyclictest27953-21apt-get07:30:113
171869960,3cyclictest25398-21cron08:30:000
171989955,0cyclictest0-21swapper/212:11:042
171989955,0cyclictest0-21swapper/210:13:482
171989950,5cyclictest0-21swapper/212:31:002
171989950,5cyclictest0-21swapper/211:20:112
171989950,5cyclictest0-21swapper/210:55:132
171989950,5cyclictest0-21swapper/210:01:252
171989950,5cyclictest0-21swapper/209:47:372
171989950,5cyclictest0-21swapper/209:19:582
171989950,4cyclictest0-21swapper/212:25:132
171989950,0cyclictest0-21swapper/212:07:172
171989950,0cyclictest0-21swapper/210:06:492
171909951,2cyclictest0-21swapper/109:15:131
171909951,2cyclictest0-21swapper/108:10:101
171909950,5cyclictest0-21swapper/110:29:291
171869955,0cyclictest0-21swapper/012:16:260
171869953,1cyclictest0-21swapper/007:45:120
171869950,5cyclictest18211-21apt-get08:15:110
171869950,5cyclictest0-21swapper/012:31:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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