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2025-12-27 - 09:37

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 Sat Dec 27, 2025 00:44:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
596121460,2chrt0-21swapper/320:05:283
851821340,1sleep3431rcuc/300:30:373
851821340,1sleep3431rcuc/300:30:373
283892840,3sleep30-21swapper/321:05:303
283892840,3sleep30-21swapper/321:05:303
183302710,3sleep018297-21gltestperf22:05:290
183302710,3sleep018297-21gltestperf22:05:290
124152660,3chrt0-21swapper/323:15:313
124152660,3chrt0-21swapper/323:15:313
181442650,2chrt0-21swapper/322:05:283
181442650,2chrt0-21swapper/322:05:283
253302570,3chrt0-21swapper/023:50:300
253302570,3chrt0-21swapper/023:50:300
277052540,2chrt0-21swapper/219:35:352
277052540,2chrt0-21swapper/219:35:352
277052540,2chrt0-21swapper/219:35:352
62142510,3sleep30-21swapper/300:25:313
62142510,3sleep30-21swapper/300:25:313
105822500,2chrt0-21swapper/323:10:333
105822500,2chrt0-21swapper/323:10:333
298432490,2sleep00-21swapper/022:35:330
298432490,2sleep00-21swapper/022:35:330
298432490,2sleep00-21swapper/022:35:330
183702460,3sleep00-21swapper/020:40:140
183702460,3sleep00-21swapper/020:40:140
17278994637,7cyclictest0-21swapper/000:00:200
17278994637,7cyclictest0-21swapper/000:00:200
237832450,3sleep023781-21proc_pri23:45:360
1727899442,32cyclictest29084-21irqstats00:00:290
1727899442,32cyclictest29084-21irqstats00:00:290
240682430,3sleep20-21swapper/220:55:202
240682430,3sleep20-21swapper/220:55:202
63582420,2sleep16485-21find20:05:351
17278994215,12cyclictest26983-21chrt22:28:530
17278994215,12cyclictest26983-21chrt22:28:530
17279994134,5cyclictest7692-21grep20:10:271
17279994134,5cyclictest7692-21grep20:10:271
171162410,2sleep20-21swapper/222:00:382
171162410,2sleep20-21swapper/222:00:382
250232400,2sleep20-21swapper/223:50:282
250232400,2sleep20-21swapper/223:50:282
17278994015,11cyclictest16439-21chrt20:35:070
17278994015,11cyclictest16439-21chrt20:35:070
17278994013,11cyclictest24197-21seq19:25:530
17278994013,11cyclictest24197-21seq19:25:530
17279993914,18cyclictest29259-21gzip00:00:321
17279993914,18cyclictest29259-21gzip00:00:321
17278993914,11cyclictest3186-21taskset00:16:490
17278993914,11cyclictest3186-21taskset00:16:490
17278993914,10cyclictest6109-21sed23:00:240
17278993914,10cyclictest6109-21sed23:00:240
71152380,2sleep016-21ksoftirqd/023:00:370
237362380,3chrt0-21swapper/323:45:353
1728199382,26cyclictest28499-21chrt00:00:223
1728199382,26cyclictest28499-21chrt00:00:223
17278993815,10cyclictest4391-21chrt21:26:460
17278993815,10cyclictest4391-21chrt21:26:460
17278993815,10cyclictest2794-21taskset21:25:130
17278993815,10cyclictest2794-21taskset21:25:130
17278993814,8cyclictest32504-21chrt22:42:440
17278993814,8cyclictest32504-21chrt22:42:440
17278993731,4cyclictest545-21in:imuxsock20:50:150
17278993731,4cyclictest545-21in:imuxsock20:50:150
17278993716,7cyclictest6334-21taskset21:32:490
17278993714,11cyclictest26158-21seq19:32:080
17278993714,11cyclictest26158-21seq19:32:080
17278993713,8cyclictest20017-21seq20:42:470
17278993713,8cyclictest20017-21seq20:42:470
17278993713,8cyclictest12686-21gltestperf21:50:250
17278993713,8cyclictest12686-21gltestperf21:50:250
17278993712,10cyclictest8683-21seq20:11:320
17278993712,10cyclictest8683-21seq20:11:320
17278993711,9cyclictest125492chrt20:22:570
17278993711,9cyclictest125492chrt20:22:570
17278993711,11cyclictest27673-21taskset21:05:120
147942370,2sleep10-21swapper/121:55:291
147942370,2sleep10-21swapper/121:55:291
103782370,3sleep010380-21grep23:10:300
103782370,3sleep010380-21grep23:10:300
8922360,2sleep1281ktimers/100:10:371
8922360,2sleep1281ktimers/100:10:371
17279993629,5cyclictest25748-21gltestperf22:25:281
17279993629,5cyclictest25748-21gltestperf22:25:281
17278993614,7cyclictest19030-21cat23:35:140
17278993614,12cyclictest12004-21taskset21:48:360
17278993614,12cyclictest12004-21taskset21:48:360
17278993612,11cyclictest17693-21chrt22:04:330
17278993612,11cyclictest17693-21chrt22:04:330
17278993611,7cyclictest0-21swapper/023:18:250
17278993611,7cyclictest0-21swapper/023:18:250
17278993610,11cyclictest5249-21latency_hist20:05:140
17278993610,11cyclictest5249-21latency_hist20:05:140
17278993610,11cyclictest5249-21latency_hist20:05:140
17279993527,6cyclictest1-21systemd22:50:331
17279993527,6cyclictest1-21systemd22:50:331
17278993514,8cyclictest29414-21chrt21:08:360
17278993514,8cyclictest29414-21chrt21:08:360
17278993512,8cyclictest31769-21taskset00:06:040
17278993512,8cyclictest31769-21taskset00:06:040
17278993511,8cyclictest0-21swapper/023:27:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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