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2025-12-23 - 06:33

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 Tue Dec 23, 2025 00:44:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3014421110,3chrt0-21swapper/200:30:302
3014421110,3chrt0-21swapper/200:30:302
144492880,1sleep20-21swapper/222:20:372
144492880,1sleep20-21swapper/222:20:372
22202820,2sleep20-21swapper/221:50:262
22202820,2sleep20-21swapper/221:50:262
128532660,3chrt0-21swapper/223:45:232
128532660,3chrt0-21swapper/223:45:232
255632630,3sleep00-21swapper/021:25:270
255632630,3sleep00-21swapper/021:25:270
6978995845,6cyclictest0-21swapper/100:00:161
6978995845,6cyclictest0-21swapper/100:00:161
141332570,3chrt0-21swapper/022:20:350
141332570,3chrt0-21swapper/022:20:350
185772530,2sleep20-21swapper/200:00:272
305412520,2sleep130544-21sort21:40:201
305412520,2sleep130544-21sort21:40:201
305412520,2sleep130544-21sort21:40:201
214332520,3chrt0-21swapper/222:40:312
214332520,3chrt0-21swapper/222:40:312
182322510,3sleep30-21swapper/319:40:213
39762460,3sleep10-21swapper/121:55:231
39762460,3sleep10-21swapper/121:55:231
39762460,3sleep10-21swapper/121:55:231
697799451,39cyclictest18573-21sort00:00:270
301112440,3chrt0-21swapper/320:10:323
301112440,3chrt0-21swapper/320:10:323
83882430,3chrt0-21swapper/320:40:233
6977994114,11cyclictest7432-21latency_hist22:05:140
6977994114,11cyclictest7432-21latency_hist22:05:140
6977994114,11cyclictest7432-21latency_hist22:05:140
327102410,2sleep10-21swapper/123:10:331
327102410,2sleep10-21swapper/123:10:331
131932410,3sleep10-21swapper/119:25:281
698199391,25cyclictest18076-21chrt00:00:163
698199391,25cyclictest18076-21chrt00:00:163
697999392,28cyclictest18057-21chrt00:00:152
697999392,28cyclictest18057-21chrt00:00:152
6977993913,15cyclictest8890-21chrt22:06:120
136482390,3sleep20-21swapper/219:25:332
6977993815,14cyclictest24005-21chrt22:48:210
6977993815,14cyclictest24005-21chrt22:48:210
6977993814,9cyclictest8490-21chrt23:33:470
6977993813,9cyclictest29130-21taskset00:29:460
6977993813,9cyclictest29130-21taskset00:29:460
6977993813,9cyclictest29130-21taskset00:29:460
6977993813,9cyclictest10610-21/usr/sbin/munin20:45:260
6977993813,9cyclictest10610-21/usr/sbin/munin20:45:260
6977993811,11cyclictest32361-21cat21:45:170
6977993811,11cyclictest32361-21cat21:45:170
299832380,2sleep130079-21cpuspeed23:05:231
144212380,2sleep114425-21needreboot20:55:291
144212380,2sleep114425-21needreboot20:55:291
6977993730,5cyclictest1-21systemd00:00:100
6977993730,5cyclictest1-21systemd00:00:100
6977993713,8cyclictest13078-21sed22:20:170
6977993713,8cyclictest13078-21sed22:20:170
6977993713,14cyclictest18791-21seq21:05:530
6977993713,14cyclictest18791-21seq21:05:530
6977993713,10cyclictest30952-21seq00:34:140
6977993713,10cyclictest30952-21seq00:34:140
6977993712,10cyclictest21777-21cat00:10:140
6977993712,10cyclictest21777-21cat00:10:140
6977993711,17cyclictest1535-21seq21:47:540
311862370,2sleep30-21swapper/300:35:173
311862370,2sleep30-21swapper/300:35:173
6978993630,4cyclictest20545-21latency_hist22:40:161
6978993630,4cyclictest20545-21latency_hist22:40:161
6978993630,4cyclictest20545-21latency_hist22:40:161
697799369,12cyclictest31593-21taskset23:09:520
6977993628,6cyclictest14267-21latency20:55:270
6977993628,6cyclictest14267-21latency20:55:270
6977993613,14cyclictest10273-21taskset23:37:450
6977993613,14cyclictest10273-21taskset23:37:450
6977993613,14cyclictest10273-21taskset23:37:450
6977993612,8cyclictest1228-21latency_hist23:15:160
6977993612,8cyclictest1228-21latency_hist23:15:160
6977993612,13cyclictest2190-21seq20:23:360
6977993612,13cyclictest2190-21seq20:23:360
6977993611,8cyclictest25121-21uname22:50:300
6977993611,8cyclictest25121-21uname22:50:300
6977993611,16cyclictest28264-21seq21:32:270
6977993611,16cyclictest28264-21seq21:32:270
225252360,3sleep20-21swapper/219:50:302
205372360,3sleep20-21swapper/200:05:252
205372360,3sleep20-21swapper/200:05:252
6978993531,3cyclictest6976-21cyclictest22:00:301
6978993531,3cyclictest6976-21cyclictest22:00:301
6978993531,3cyclictest6976-21cyclictest22:00:301
6978993530,3cyclictest27848-21gltestperf00:25:251
6978993530,3cyclictest27848-21gltestperf00:25:251
6978993530,3cyclictest27848-21gltestperf00:25:251
6977993512,13cyclictest15998-21taskset23:54:170
6977993512,13cyclictest15998-21taskset23:54:170
6977993511,7cyclictest872-21/usr/sbin/munin00:40:230
6977993511,11cyclictest24438-21chrt21:21:090
6977993511,11cyclictest24438-21chrt21:21:090
6977993511,10cyclictest12140-21runrttasks23:42:320
6977993511,10cyclictest12140-21runrttasks23:42:320
6977993510,8cyclictest13853-21taskset19:26:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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