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2026-03-11 - 23:43

OSADL QA Farm on Real-time of Mainline Linux

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

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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  Phytec
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: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackbslot5s.osadl.org (updated Wed Mar 11, 2026 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3795471995039,8cyclictest3857394-21grep10:05:252
3795466994936,9cyclictest3826910-21sendmail08:40:001
3795466994433,7cyclictest3853924-21grep09:55:231
3795466994433,7cyclictest3853924-21grep09:55:231
3795475994331,9cyclictest391ktimers/311:30:093
3795471994334,7cyclictest311ktimers/211:45:122
3795471994333,6cyclictest3833248-21grep08:55:242
3795462994332,8cyclictest3899150-21apt-get12:10:000
3795475994234,5cyclictest3833719-21cut09:00:013
3795471994232,7cyclictest3881888-21sendmail11:20:002
3795475994128,10cyclictest391ktimers/309:20:123
3795471994132,5cyclictest0-21swapper/210:55:162
3795475994029,7cyclictest0-21swapper/307:20:013
3795471994032,6cyclictest311ktimers/207:35:132
3795471994032,6cyclictest311ktimers/207:35:122
3795471994032,5cyclictest3895984-21kworker/u8:3+events_unbound12:03:492
3795462994033,4cyclictest3887211-21sh11:35:010
3795466993932,4cyclictest3861427-21cron10:20:011
3795471993827,7cyclictest3829841-21grep08:45:252
3795462993829,5cyclictest3857396-21unixbench_singl10:05:250
3795462993828,8cyclictest121ktimers/008:25:110
3795462993827,8cyclictest3802569-21tail07:25:270
3795475993726,7cyclictest3891855-21grep11:45:253
3795471993727,7cyclictest3901054-21cron12:15:002
3795462993729,4cyclictest0-21swapper/010:04:590
3795462993726,7cyclictest3904066-21grep12:20:240
3795462993726,7cyclictest3904066-21grep12:20:230
379546299372,5cyclictest131rcu_preempt07:20:140
3795462993725,8cyclictest3807675-21grep07:40:270
3795462993725,8cyclictest3807675-21grep07:40:270
3795462993718,5cyclictest0-21swapper/008:20:010
3795475993625,7cyclictest3909150-21grep12:35:253
3795471993627,5cyclictest3799400-21apt-get07:20:012
379546299363,7cyclictest3852679-21cron09:55:000
379546299363,7cyclictest3852679-21cron09:55:000
3795462993625,7cyclictest3799629-21apt-key07:20:010
3795475993528,3cyclictest0-21swapper/310:09:593
3795471993524,7cyclictest0-21swapper/210:30:012
3795466993527,4cyclictest0-21swapper/108:05:001
3795466993525,7cyclictest231ktimers/108:55:121
3795466993524,8cyclictest3813268-21sendmail08:00:001
3795466993524,7cyclictest0-21swapper/111:45:241
3795466993524,7cyclictest0-21swapper/110:40:011
3795462993527,4cyclictest0-21swapper/009:35:000
3795462993527,3cyclictest0-21swapper/012:39:590
3795475993425,4cyclictest0-21swapper/308:30:163
3795471993426,4cyclictest0-21swapper/208:20:162
3795471993424,6cyclictest0-21swapper/210:10:252
3795471993423,6cyclictest0-21swapper/210:15:252
3795466993421,11cyclictest231ktimers/110:20:101
3795462993427,4cyclictest3850992-21kthreadd09:50:000
3795462993426,4cyclictest0-21swapper/010:00:000
3795462993426,4cyclictest0-21swapper/010:00:000
3795462993426,4cyclictest0-21swapper/008:30:250
3795462993425,6cyclictest0-21swapper/012:35:000
3795462993424,7cyclictest3838402-21grep09:10:240
3795462993422,9cyclictest121ktimers/009:15:130
3795475993325,4cyclictest0-21swapper/308:05:013
3795475993324,6cyclictest0-21swapper/312:35:003
3795471993326,4cyclictest0-21swapper/209:15:172
3795471993326,3cyclictest0-21swapper/211:35:232
3795471993319,10cyclictest311ktimers/211:40:132
3795466993325,4cyclictest0-21swapper/111:30:011
3795466993325,4cyclictest0-21swapper/109:20:011
3795466993323,7cyclictest3842259-21audit_send_reply09:25:011
3795466993321,8cyclictest0-21swapper/112:35:251
3795462993326,3cyclictest0-21swapper/007:35:010
3795462993325,4cyclictest0-21swapper/010:35:260
3795462993322,7cyclictest3795803-21tune2fs07:10:160
3795475993223,6cyclictest3839258-21fschecks_time09:15:163
3795475993221,8cyclictest3881888-21sendmail11:20:003
3795471993225,4cyclictest0-21swapper/212:30:132
3795471993224,4cyclictest0-21swapper/211:00:232
3795471993223,7cyclictest3825149-21kworker/u8:0+events_unbound09:48:242
3795466993225,3cyclictest0-21swapper/111:05:001
3795466993224,4cyclictest0-21swapper/110:10:001
3795466993223,6cyclictest3878870-21fschecks_count11:10:161
3795466993223,4cyclictest0-21swapper/110:45:151
3795466993222,5cyclictest0-21swapper/107:15:011
3795466993220,8cyclictest3895752-21sendmail12:00:001
3795462993226,3cyclictest0-21swapper/012:20:000
3795462993223,6cyclictest0-21swapper/011:55:010
3795462993223,4cyclictest0-21swapper/011:25:230
3795462993221,6cyclictest3828161-21grep08:40:240
3795462993220,8cyclictest121ktimers/012:00:090
3795475993124,4cyclictest0-21swapper/310:45:273
3795475993123,5cyclictest3904058-21unixbench_singl12:20:243
3795475993123,5cyclictest3904058-21unixbench_singl12:20:233
3795475993123,4cyclictest0-21swapper/309:40:003
3795475993122,6cyclictest3866542-21sh10:35:003
3795475993121,6cyclictest0-21swapper/310:20:013
3795471993124,4cyclictest3878481-21idleruntime-cro11:10:002
3795471993124,4cyclictest0-21swapper/212:05:232
3795471993123,4cyclictest0-21swapper/207:45:142
3795471993122,4cyclictest0-21swapper/207:55:162
3795471993121,7cyclictest3849290-21idleruntime-cro09:45:002
3795471993121,6cyclictest3887354-21cat11:35:012
3795471993119,7cyclictest0-21swapper/207:40:272
3795471993119,7cyclictest0-21swapper/207:40:272
3795466993123,4cyclictest0-21swapper/111:15:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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