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2025-11-25 - 22:14

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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  Intel
Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Tue Nov 25, 2025 12:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
318492121550,2sleep30-21swapper/310:21:283
32690342700,5sleep10-21swapper/111:46:381
29933642690,3sleep10-21swapper/107:11:201
2989526996448,6cyclictest2994405-21apt-get07:15:031
32393142580,5sleep30-21swapper/311:16:303
2989529995746,8cyclictest3040475-21ntpq07:56:222
298952199551,52cyclictest1-21systemd10:00:000
2989526995443,8cyclictest3109751-21ntpq09:06:221
2989526995343,7cyclictest3199423-21ntpq10:36:231
2989526995242,7cyclictest3215149-21latency_hist10:55:011
2989526995142,7cyclictest3298645-21ntpq12:16:241
2989526995140,8cyclictest3020760-21ntpq07:36:261
2989521995143,6cyclictest3100713-21latency_hist09:00:010
2989521995141,8cyclictest3170373-21apt-get10:10:000
32738502500,1chrt3273854-21cat11:51:271
2989526995044,4cyclictest3030641-21ntpq07:46:221
2989521995037,11cyclictest3175905-21apt-get10:16:100
2989529994941,5cyclictest2994713-21kworker/u8:2+flush-8:008:31:152
2989526994839,6cyclictest3140506-21latency_hist09:40:001
2989526994838,7cyclictest3165778-21/usr/sbin/munin10:06:221
2989526994836,9cyclictest3060277-21ntpq08:16:221
2989521994837,9cyclictest3001520-21apt-get07:20:000
2989529994735,9cyclictest282-21systemd-journal08:56:262
2989526994638,6cyclictest3160611-21/usr/sbin/munin10:01:291
2989521994623,20cyclictest3021865-21/usr/sbin/munin07:41:220
2989526994534,8cyclictest3278591-21ntpq11:56:221
2989526994436,6cyclictest3283574-21ntpq12:01:251
2989526994436,6cyclictest3015757-21ntpq07:31:251
2989526994436,6cyclictest3015757-21ntpq07:31:241
2989526994429,10cyclictest3005863-21ntpq07:21:211
2989526994428,11cyclictest282-21systemd-journal08:26:261
2989521994338,4cyclictest2150561-21kworker/u8:3+flush-8:007:51:230
2989521994325,15cyclictest282-21systemd-journal11:20:000
2989529994236,5cyclictest2157273-21kworker/u8:1+flush-8:007:16:292
2989526994233,6cyclictest3046301-21latency_hist08:05:011
2989521994231,9cyclictest3293555-21ntpq12:11:270
2989526994130,8cyclictest282-21systemd-journal08:06:261
2989526994030,7cyclictest282-21systemd-journal12:36:371
2989521994032,6cyclictest282-21systemd-journal09:05:520
2989521994030,7cyclictest3130629-21latency_hist09:30:010
2989521994028,9cyclictest3149519-21ntpq09:46:230
2989521994019,18cyclictest3220062-21latency_hist11:00:010
298913824027,9sleep20-21swapper/207:07:292
2989526993935,3cyclictest3125019-21kworker/u8:2+flush-8:009:41:291
2989526993930,7cyclictest3230283-21apt-get11:11:081
2989521993929,8cyclictest3045431-21ntpq08:01:240
298952199390,36cyclictest1-21systemd08:34:260
2989529993831,5cyclictest3248975-21journal-offline11:26:272
2989529993828,8cyclictest282-21systemd-journal09:40:002
2989521993822,14cyclictest3225039-21systemd-run11:05:000
2989521993821,15cyclictest3190089-21unixbench_singl10:26:280
2989526993729,6cyclictest282-21systemd-journal09:02:261
2989521993722,13cyclictest3175560-21sh10:15:000
2989521993719,16cyclictest3090483-21unixbench_singl08:46:290
2989521993718,16cyclictest2989518-21latency_hist07:10:010
2989526993632,2cyclictest3240750-21irqcore11:21:181
2989526993623,4cyclictest421rcuog/208:46:251
2989521993631,4cyclictest2157273-21kworker/u8:1+flush-8:007:11:300
2989521993619,15cyclictest0-21swapper/008:40:000
2989521993611,8cyclictest3309339-21apt-get12:30:010
2989526993527,5cyclictest3065266-21ntpq08:21:251
2989526993526,6cyclictest3095770-21kworker/u8:0+events_unbound09:11:261
2989521993518,15cyclictest3289000-21unixbench_multi12:06:280
2989529993425,7cyclictest282-21systemd-journal10:02:262
2989526993425,7cyclictest3021890-21apt-get07:41:101
2989521993423,8cyclictest3294311-21apt-get12:15:010
2989521993420,13cyclictest3081794-21sort08:41:180
2989521993416,16cyclictest3031477-21systemd-run07:50:010
2989521993415,18cyclictest0-21swapper/012:25:000
2989521993415,17cyclictest3273858-21mailstats11:51:270
2989521993413,2cyclictest3249201-21switchtime11:26:300
2989526993324,6cyclictest3195057-21kworker/u8:1+events_unbound11:16:221
2989521993326,5cyclictest2994713-21kworker/u8:2+flush-8:008:11:230
2989521993316,15cyclictest0-21swapper/011:46:390
2989521993315,16cyclictest3061087-21cron08:20:000
2989521993313,3cyclictest0-21swapper/009:20:000
2989526993223,6cyclictest3170397-21kworker/u8:0+events_unbound11:26:281
2989526993222,7cyclictest3309511-21base6412:30:011
298952199329,7cyclictest3016137-21sed07:31:300
298952199329,7cyclictest3016137-21sed07:31:300
2989521993217,13cyclictest0-21swapper/008:21:200
2989521993215,15cyclictest0-21swapper/010:36:310
2989521993215,15cyclictest0-21swapper/009:05:000
2989521993214,2cyclictest0-21swapper/011:11:110
2989521993213,17cyclictest3160929-21uniq10:01:150
2989521993212,3cyclictest0-21swapper/010:51:160
2989521993211,7cyclictest3315969-21cut12:36:180
2989529993127,2cyclictest3141207-21fschecks_time09:41:132
2989526993125,5cyclictest3125019-21kworker/u8:2+flush-8:009:57:571
2989526993123,6cyclictest3190730-21apt-get10:31:101
2989526993122,6cyclictest3154478-21ntpq09:51:241
2989521993124,5cyclictest3155343-21latency_hist09:55:010
2989521993115,15cyclictest0-21swapper/011:31:220
2989521993114,2cyclictest0-21swapper/010:31:210
2989521993114,15cyclictest3244825-21latency_hist11:25:000
2989521993113,2cyclictest3259702-21systemd-run11:40:000
2989521993113,2cyclictest3259702-21systemd-run11:40:000
298952199311,2cyclictest832-21mta-sts-daemon10:46:270
2989521993111,4cyclictest3229571-21unixbench_multi11:06:300
2989521993110,6cyclictest3137456-21cut09:36:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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