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2026-07-16 - 13:10

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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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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 rack4slot1s.osadl.org (updated Thu Jul 16, 2026 00:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2291221230,3sleep30-21swapper/300:03:343
2291221230,3sleep30-21swapper/300:03:343
2291221230,3sleep30-21swapper/300:03:343
1260321180,1sleep00-21swapper/020:43:280
1260321180,1sleep00-21swapper/020:43:280
661421160,2sleep3431rcuc/323:18:403
661421160,2sleep3431rcuc/323:18:403
1017721090,3sleep30-21swapper/323:28:373
1017721090,3sleep30-21swapper/323:28:373
2515521080,2sleep30-21swapper/321:13:463
2515521080,2sleep30-21swapper/321:13:463
31202980,2sleep30-21swapper/321:43:373
31202980,2sleep30-21swapper/321:43:373
31202980,2sleep30-21swapper/321:43:373
147022890,8sleep014706-21needreboot22:13:400
147022890,8sleep014706-21needreboot22:13:400
171602730,3sleep30-21swapper/319:28:353
171602730,3sleep30-21swapper/319:28:353
294652680,2sleep029466-21uname22:53:360
294652680,2sleep029466-21uname22:53:360
318612610,2sleep031863-21if_eth021:33:370
318612610,2sleep031863-21if_eth021:33:370
318612610,2sleep031863-21if_eth021:33:370
238782600,3sleep30-21swapper/319:43:453
246392580,2chrt0-21swapper/300:08:333
246392580,2chrt0-21swapper/300:08:333
246392580,2chrt0-21swapper/300:08:333
11644995739,13cyclictest23548-21grep00:03:411
11644995739,13cyclictest23548-21grep00:03:411
11644995739,13cyclictest23548-21grep00:03:411
97522540,3chrt0-21swapper/121:59:551
97522540,3chrt0-21swapper/121:59:551
203942540,2chrt0-21swapper/321:03:333
203942540,2chrt0-21swapper/321:03:333
203942540,2chrt0-21swapper/321:03:333
210952530,4sleep021097-21fschecks_time23:58:330
210952530,4sleep021097-21fschecks_time23:58:330
210952530,4sleep021097-21fschecks_time23:58:330
109202520,3chrt0-21swapper/322:03:393
109202520,3chrt0-21swapper/322:03:393
189682510,3sleep30-21swapper/323:53:293
189682510,3sleep30-21swapper/323:53:293
171402500,2sleep00-21swapper/020:53:420
171402500,2sleep00-21swapper/020:53:420
86692480,2sleep30-21swapper/323:23:423
86692480,2sleep30-21swapper/323:23:423
86692480,2sleep30-21swapper/323:23:423
231532470,2chrt23152-21ls22:38:221
231532470,2chrt23152-21ls22:38:221
231532470,2chrt23152-21ls22:38:221
11643994523,14cyclictest263522awk19:53:330
11643994523,14cyclictest263522awk19:53:330
11643994518,16cyclictest16075-21taskset20:51:510
11643994518,16cyclictest16075-21taskset20:51:510
11643994418,15cyclictest20941-21taskset22:28:590
11643994418,15cyclictest20941-21taskset22:28:590
11643994418,15cyclictest20941-21taskset22:28:590
11643994418,10cyclictest31503-21taskset20:05:370
11643994418,10cyclictest31503-21taskset20:05:370
11643994418,10cyclictest31503-21taskset20:05:370
145172430,2sleep114619-21memory22:13:381
145172430,2sleep114619-21memory22:13:381
11643994317,15cyclictest749-21runrttasks21:09:570
11643994317,15cyclictest749-21runrttasks21:09:570
11643994317,15cyclictest749-21runrttasks21:09:570
175442420,4sleep20-21swapper/219:28:372
175442420,4sleep20-21swapper/219:28:372
11643993832,4cyclictest700-21192.168.115.40-manager22:24:160
11643993832,4cyclictest700-21192.168.115.40-manager22:24:160
11643993832,4cyclictest700-21192.168.115.40-manager22:24:160
11643993731,4cyclictest700-21192.168.115.40-manager21:42:220
11643993731,4cyclictest700-21192.168.115.40-manager21:42:220
11643993731,4cyclictest700-21192.168.115.40-manager21:42:220
11643993717,10cyclictest2119-21acpi23:08:320
11643993717,10cyclictest2119-21acpi23:08:320
11643993717,10cyclictest2119-21acpi23:08:320
11643993715,11cyclictest18563-21runrttasks19:32:200
11643993715,11cyclictest18563-21runrttasks19:32:200
11643993631,3cyclictest700-21192.168.115.40-manager20:21:490
11643993631,3cyclictest700-21192.168.115.40-manager20:21:490
11643993631,3cyclictest700-21192.168.115.40-manager20:21:490
11643993629,5cyclictest29837-21latency_hist20:03:210
11643993629,5cyclictest29837-21latency_hist20:03:210
11643993628,6cyclictest0-21swapper/000:03:280
11643993628,6cyclictest0-21swapper/000:03:280
11643993628,6cyclictest0-21swapper/000:03:280
11643993624,9cyclictest10926-21bingrep22:03:390
11643993624,9cyclictest10926-21bingrep22:03:390
11643993623,10cyclictest25023-21timerwakeupswit21:13:450
11643993623,10cyclictest25023-21timerwakeupswit21:13:450
11643993617,9cyclictest21627-21seq21:06:070
11643993617,9cyclictest21627-21seq21:06:070
11643993617,7cyclictest197392sleep021:01:040
11643993617,7cyclictest197392sleep021:01:040
11643993617,7cyclictest197392sleep021:01:040
11643993616,10cyclictest749-21runrttasks21:25:040
11643993616,10cyclictest749-21runrttasks21:25:040
11643993616,10cyclictest749-21runrttasks21:25:040
11643993615,8cyclictest261202chrt00:10:590
11643993615,8cyclictest261202chrt00:10:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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