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2026-09-05 - 23:16

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 Sep 05, 2026 12:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3069921240,2sleep30-21swapper/308:19:213
3069921240,2sleep30-21swapper/308:19:213
150832980,3sleep20-21swapper/210:29:292
216332960,3sleep30-21swapper/307:54:243
216332960,3sleep30-21swapper/307:54:243
252852910,3sleep30-21swapper/310:59:133
252852910,3sleep30-21swapper/310:59:133
204982910,1sleep3431rcuc/310:44:253
204982910,1sleep3431rcuc/310:44:253
264672850,3chrt0-21swapper/210:59:322
264672850,3chrt0-21swapper/210:59:322
62302820,3sleep20-21swapper/211:34:212
62302820,3sleep20-21swapper/211:34:212
132862820,2sleep30-21swapper/310:24:313
132862820,2sleep30-21swapper/310:24:313
278282750,8sleep0171ktimers/012:29:310
253092670,2sleep00-21swapper/010:59:140
253092670,2sleep00-21swapper/010:59:140
218492640,12sleep121852-21fschecks_count10:49:221
282582600,3sleep20-21swapper/208:14:092
282582600,3sleep20-21swapper/208:14:092
56562580,2sleep30-21swapper/308:39:233
56562580,2sleep30-21swapper/308:39:233
266412540,2chrt26644-21wc12:29:140
229912510,3sleep022992-21nfs4_client09:24:260
143012510,4sleep20-21swapper/207:34:302
143012510,4sleep20-21swapper/207:34:302
13812500,3chrt0-21swapper/311:19:313
13812500,3chrt0-21swapper/311:19:313
112422480,2sleep00-21swapper/010:19:300
112422480,2sleep00-21swapper/010:19:300
168352470,3sleep30-21swapper/309:09:223
125502460,3chrt0-21swapper/210:24:222
125502460,3chrt0-21swapper/210:24:222
37682430,2sleep20-21swapper/208:34:232
174902430,3chrt0-21swapper/307:44:233
251232420,3sleep20-21swapper/209:29:312
251232420,3sleep20-21swapper/209:29:312
6126994118,21cyclictest0-21swapper/008:24:290
6126994117,22cyclictest16235-21ntp_offset11:59:270
6126994117,22cyclictest16235-21ntp_offset11:59:270
313022410,3sleep30-21swapper/312:39:323
313022410,3sleep30-21swapper/312:39:323
293562410,2sleep029169-21/usr/sbin/munin11:09:240
78552400,2sleep07857-21latency_hist11:39:140
78552400,2sleep07857-21latency_hist11:39:140
304332400,3sleep30-21swapper/311:09:343
612699391,16cyclictest6079-21ls11:34:160
612699391,16cyclictest6079-21ls11:34:160
612699391,12cyclictest27586-21threads08:09:320
612699391,12cyclictest27586-21threads08:09:320
612699391,12cyclictest15420-21cat11:59:140
222862390,2sleep022365-21needreboot10:49:260
6126993817,19cyclictest0-21swapper/010:29:110
6126993817,19cyclictest0-21swapper/010:29:110
612699381,12cyclictest10308-21sshd10:19:120
612699381,12cyclictest10308-21sshd10:19:120
22432380,3chrt0-21swapper/309:54:363
613299371,32cyclictest0-21swapper/310:40:353
613299371,32cyclictest0-21swapper/310:40:353
613299371,32cyclictest0-21swapper/310:40:353
6126993729,6cyclictest6109-21cyclictest10:39:310
6126993729,6cyclictest6109-21cyclictest10:39:310
6126993729,6cyclictest6109-21cyclictest10:39:310
6126993712,4cyclictest0-21swapper/009:39:230
6126993712,4cyclictest0-21swapper/009:39:230
6126993711,2cyclictest0-21swapper/008:59:100
612699371,10cyclictest31813-21cut09:49:220
6126993710,4cyclictest0-21swapper/011:04:300
6126993710,4cyclictest0-21swapper/011:04:300
613199361,29cyclictest0-21swapper/210:40:352
613199361,29cyclictest0-21swapper/210:40:352
613199361,29cyclictest0-21swapper/210:40:352
6126993626,8cyclictest31940-21latency_hist08:24:090
6126993626,8cyclictest31940-21latency_hist08:24:090
6126993618,16cyclictest0-21swapper/008:14:220
6126993615,19cyclictest0-21swapper/012:19:230
6126993615,19cyclictest0-21swapper/012:19:230
6126993615,19cyclictest0-21swapper/012:19:230
6126993612,2cyclictest0-21swapper/010:37:110
6126993612,2cyclictest0-21swapper/010:37:110
612699361,12cyclictest749-21runrttasks12:10:390
612699361,12cyclictest749-21runrttasks12:10:390
612699361,11cyclictest1547-21kernelversion09:54:280
162942360,3sleep00-21swapper/007:39:300
162942360,3sleep00-21swapper/007:39:300
103672360,2sleep010368-21interrupts11:44:240
103672360,2sleep010368-21interrupts11:44:240
6126993525,8cyclictest18469-21timerwakeupswit12:04:320
612699350,12cyclictest8478-21latency_hist10:14:140
133232350,2sleep113410-21sort08:59:241
133232350,2sleep113410-21sort08:59:241
6130993426,5cyclictest30763-21threads09:44:311
612699349,4cyclictest30252-21kworker/u9:3+rpciod07:45:310
6126993426,6cyclictest31030-21/usr/sbin/munin11:14:290
6126993426,6cyclictest31030-21/usr/sbin/munin11:14:290
612699341,12cyclictest749-21runrttasks08:39:340
612699341,12cyclictest749-21runrttasks08:39:340
612699341,12cyclictest20775-21sort09:19:230
612699341,12cyclictest20775-21sort09:19:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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