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2026-05-27 - 19:00

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 May 27, 2026 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3219639995346,4cyclictest3273546-21kworker/u8:2+events_unbound10:44:422
3219634995042,5cyclictest3323379-21kworker/u8:0+events_unbound12:09:561
321963199501,46cyclictest0-21swapper/010:15:100
3219634994840,5cyclictest208-21systemd-logind11:34:481
3219639994638,4cyclictest0-21swapper/207:15:022
3219643994411,7cyclictest0-21swapper/310:40:003
3219639994433,7cyclictest3313297-21munin-plugin-st11:40:012
3219634994436,5cyclictest645-21runrttasks11:49:521
3219643994334,5cyclictest0-21swapper/307:15:023
3219634994332,8cyclictest3304155-21grep11:10:241
3219643994117,3cyclictest0-21swapper/312:35:253
3219643994013,3cyclictest0-21swapper/308:00:013
3219639994030,7cyclictest3251487-21munin-plugin-st08:40:002
3219639994026,11cyclictest311ktimers/211:55:102
3219639994024,5cyclictest3230430-21kworker/u8:3+events_unbound09:16:292
3219631994031,5cyclictest3221399-21latency_hist07:15:010
3219631994026,10cyclictest121ktimers/009:20:110
3219631993931,4cyclictest3276641-21unixbench_singl09:50:250
3219643993830,4cyclictest3258311-21munin-plugin-st09:00:013
3219639993830,5cyclictest3300676-21grep11:00:242
3219643993712,4cyclictest0-21swapper/312:25:153
3219643993712,4cyclictest0-21swapper/312:25:153
3219639993725,7cyclictest3290516-21unixbench_singl10:30:242
3219639993720,5cyclictest3295813-21kworker/u8:1+events_unbound12:09:182
3219634993730,4cyclictest3258302-21sendmail09:00:011
3219634993727,8cyclictest231ktimers/109:50:121
3219634993726,7cyclictest0-21swapper/112:15:241
3219634993724,9cyclictest231ktimers/108:20:121
3219634993724,9cyclictest231ktimers/108:20:121
3219643993628,4cyclictest0-21swapper/310:20:013
3219639993628,4cyclictest0-21swapper/212:15:002
3219639993628,4cyclictest0-21swapper/208:20:002
3219639993628,4cyclictest0-21swapper/208:20:002
3219634993626,6cyclictest0-21swapper/110:05:151
3219634993624,8cyclictest3233807-21grep07:45:251
3219643993513,3cyclictest0-21swapper/312:00:233
3219639993528,4cyclictest3237638-21sendmail08:00:012
3219639993527,4cyclictest0-21swapper/207:35:162
3219639993526,6cyclictest0-21swapper/209:05:242
3219634993528,4cyclictest3230812-21latency_hist07:40:001
3219634993527,4cyclictest0-21swapper/110:40:001
3219634993527,4cyclictest0-21swapper/110:10:231
3219634993525,6cyclictest0-21swapper/107:55:221
3219631993527,4cyclictest0-21swapper/007:15:030
3219631993526,6cyclictest3258303-21munin-plugin-st09:00:010
3219631993526,6cyclictest121ktimers/010:10:110
3219631993526,4cyclictest0-21swapper/011:30:240
3219643993427,3cyclictest3277065-21cron09:55:003
3219643993423,7cyclictest3323062-21grep12:05:253
3219639993425,6cyclictest3225286-21grep07:20:242
3219639993423,7cyclictest0-21swapper/209:40:242
3219634993426,5cyclictest3221679-21uniq07:15:021
3219631993426,4cyclictest3316706-21auditctl11:50:000
3219631993424,7cyclictest3331613-21grep12:30:250
3219643993325,4cyclictest0-21swapper/310:45:243
3219643993323,6cyclictest3300684-21grep11:00:243
3219643993321,8cyclictest0-21swapper/312:00:003
3219639993327,4cyclictest3273546-21kworker/u8:2+events_unbound10:09:122
3219634993325,4cyclictest0-21swapper/110:25:181
3219634993323,6cyclictest0-21swapper/109:10:251
3219631993325,4cyclictest0-21swapper/009:50:000
3219643993224,4cyclictest0-21swapper/310:10:233
3219643993223,4cyclictest0-21swapper/310:20:163
3219639993226,4cyclictest3230430-21kworker/u8:3+events_unbound09:57:382
3219639993224,4cyclictest0-21swapper/212:15:142
3219639993224,4cyclictest0-21swapper/207:45:152
3219639993222,7cyclictest311ktimers/209:25:132
3219639993221,6cyclictest0-21swapper/208:25:002
3219639993221,6cyclictest0-21swapper/208:25:002
3219634993226,4cyclictest3292869-21kworker/u8:0+events_unbound11:43:591
3219634993224,4cyclictest0-21swapper/111:35:151
3219634993223,6cyclictest3271538-21grep09:35:241
3219634993222,7cyclictest3328167-21grep12:20:251
3219634993222,6cyclictest0-21swapper/112:30:001
3219634993222,6cyclictest0-21swapper/112:30:001
3219634993222,6cyclictest0-21swapper/109:45:241
3219634993220,8cyclictest3333765-21sendmail12:40:001
3219631993224,4cyclictest0-21swapper/012:15:240
3219631993222,7cyclictest3330350-21auditctl12:30:000
3219631993222,7cyclictest3330350-21auditctl12:30:000
3219631993222,7cyclictest121ktimers/007:40:110
3219631993221,7cyclictest3289208-21cron10:30:000
3219643993123,4cyclictest0-21swapper/309:15:143
3219643993119,8cyclictest0-21swapper/309:40:153
3219639993125,4cyclictest3323379-21kworker/u8:0+events_unbound12:29:592
3219639993125,4cyclictest3323379-21kworker/u8:0+events_unbound12:29:592
3219639993125,4cyclictest3230430-21kworker/u8:3+events_unbound08:10:422
3219639993124,3cyclictest0-21swapper/209:35:242
3219639993122,5cyclictest0-21swapper/209:50:002
3219639993121,6cyclictest3333331-21grep12:35:252
3219634993123,4cyclictest0-21swapper/107:20:151
3219634993121,6cyclictest0-21swapper/111:00:241
3219634993120,8cyclictest3280013-21grep10:00:241
3219634993120,7cyclictest3290514-21grep10:30:241
3219634993120,7cyclictest0-21swapper/108:25:261
3219634993120,7cyclictest0-21swapper/108:25:261
3219631993119,8cyclictest0-21swapper/009:30:000
3219631993118,3cyclictest131rcu_preempt10:05:110
3219643993023,3cyclictest0-21swapper/310:30:243
3219643993021,5cyclictest0-21swapper/308:40:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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