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2026-07-07 - 01:48

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 Jul 07, 2026 00:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1151421170,2sleep20-21swapper/223:08:312
1151421170,2sleep20-21swapper/223:08:312
156472930,2chrt0-21swapper/320:28:253
156472930,2chrt0-21swapper/320:28:253
128582720,2sleep20-21swapper/200:43:222
174222690,3sleep30-21swapper/320:33:193
174222690,3sleep30-21swapper/320:33:193
14562650,2chrt20341-21munin-node22:43:250
14562650,2chrt20341-21munin-node22:43:250
210562630,3sleep30-21swapper/322:08:263
210562630,3sleep30-21swapper/322:08:263
210562630,3sleep30-21swapper/322:08:263
312762620,1sleep122700-21kworker/u9:0+xprtiod00:03:181
312762620,1sleep122700-21kworker/u9:0+xprtiod00:03:181
312762620,1sleep122700-21kworker/u9:0+xprtiod00:03:181
127762590,2chrt12779-21cpuspeed00:43:211
127762590,2chrt12779-21cpuspeed00:43:211
310692580,3sleep20-21swapper/219:43:172
310692580,3sleep20-21swapper/219:43:172
85192560,1sleep0595-21sshd23:00:460
85192560,1sleep0595-21sshd23:00:460
106142550,2chrt10610-21sed00:33:281
106142550,2chrt10610-21sed00:33:281
68452540,3chrt0-21swapper/321:28:343
68452540,3chrt0-21swapper/321:28:343
202052540,3sleep10-21swapper/123:33:221
132522540,3sleep20-21swapper/221:48:232
132522540,3sleep20-21swapper/221:48:232
70102520,3sleep30-21swapper/320:03:323
70102520,3sleep30-21swapper/320:03:323
278892500,10sleep1281ktimers/119:33:271
278892500,10sleep1281ktimers/119:33:271
88862450,1sleep10-21swapper/121:33:391
88862450,1sleep10-21swapper/121:33:391
304922450,3sleep30-21swapper/321:08:163
304922450,3sleep30-21swapper/321:08:163
304922450,3sleep30-21swapper/321:08:163
292912450,2chrt29288-21cat19:38:210
21239994527,16cyclictest3668-21head22:48:271
21239994527,16cyclictest3668-21head22:48:271
21239994527,16cyclictest3668-21head22:48:271
135452450,1chrt0-21swapper/121:48:261
21239994318,23cyclictest23524-21kworker/u9:2-xprtiod00:03:321
21239994318,23cyclictest23524-21kworker/u9:2-xprtiod00:03:321
137432430,2sleep013913-21grep23:13:370
137432430,2sleep013913-21grep23:13:370
104332420,2sleep010436-21fschecks_count00:33:270
104332420,2sleep010436-21fschecks_count00:33:270
314722410,5sleep031468-21df_inode00:03:240
314722410,5sleep031468-21df_inode00:03:240
314722410,5sleep031468-21df_inode00:03:240
21239994115,24cyclictest0-21swapper/123:38:361
21239994020,18cyclictest2441-21latency_hist19:53:211
21239994020,18cyclictest2441-21latency_hist19:53:211
21239994017,21cyclictest0-21swapper/119:53:361
21239994017,21cyclictest0-21swapper/119:53:361
21239994012,25cyclictest0-21swapper/120:43:351
21239994012,25cyclictest0-21swapper/120:43:351
2123899404,29cyclictest32309-21find00:03:350
2123899404,29cyclictest32309-21find00:03:350
21239993916,21cyclictest0-21swapper/120:13:341
21239993916,21cyclictest0-21swapper/120:13:341
2123999391,13cyclictest11560-21ntpq23:08:321
2123999391,13cyclictest11560-21ntpq23:08:321
2123999391,12cyclictest16399-21latency_hist23:23:221
2123999391,12cyclictest16399-21latency_hist23:23:221
2123999391,11cyclictest7134-21grep20:03:341
2123999391,11cyclictest7134-21grep20:03:341
109612390,2sleep00-21swapper/020:13:350
109612390,2sleep00-21swapper/020:13:350
85332380,2chrt0-21swapper/300:28:283
85332380,2chrt0-21swapper/300:28:283
21239993820,16cyclictest0-21swapper/122:28:371
21239993820,16cyclictest0-21swapper/122:28:371
21239993816,20cyclictest0-21swapper/120:38:341
21239993816,20cyclictest0-21swapper/120:38:341
2123999381,12cyclictest8372-21/usr/sbin/munin00:28:261
2123999381,12cyclictest8372-21/usr/sbin/munin00:28:261
2123999381,11cyclictest9920-21mailstats23:03:361
2123999381,11cyclictest9920-21mailstats23:03:361
247902370,3sleep30-21swapper/322:18:273
247902370,3sleep30-21swapper/322:18:273
2123999379,5cyclictest10049-21cron00:33:141
2123999379,5cyclictest10049-21cron00:33:141
2123999378,6cyclictest20877-21head23:33:311
2123999378,6cyclictest20877-21head23:33:311
2123999378,5cyclictest5939-21fschecks_count21:28:251
2123999378,5cyclictest5939-21fschecks_count21:28:251
2123999378,5cyclictest5939-21fschecks_count21:28:251
2123999377,7cyclictest7460-21sensors00:23:341
21239993727,8cyclictest32213-21threads19:43:351
21239993727,8cyclictest32213-21threads19:43:351
21239993727,8cyclictest32213-21threads19:43:351
21239993712,4cyclictest281ktimers/122:43:351
21239993712,4cyclictest281ktimers/122:43:351
2123999371,14cyclictest17412-21ls20:33:181
2123999371,14cyclictest17412-21ls20:33:181
2123999371,13cyclictest22978-21unixbench-2d19:18:351
2123999371,13cyclictest22978-21unixbench-2d19:18:351
2123999371,12cyclictest25367-21tail20:53:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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