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2024-04-13 - 05:06

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #7

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 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.
Unexpectedly long latencies may be caused by SMIs
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 rackcslot7s.osadl.org (updated Sat Apr 13, 2024 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
235698822740,10sleep00-21swapper/019:08:250
2357271991162,17cyclictest0-21swapper/319:50:023
23572719911410,8cyclictest141rcu_preempt20:10:563
1623991100,9rtkit-daemon1622-21rtkit-daemon00:00:003
1623991100,8rtkit-daemon1622-21rtkit-daemon20:54:443
2357271991092,6cyclictest141rcu_preempt23:14:073
2357271991081,6cyclictest141rcu_preempt19:43:243
162399950,56rtkit-daemon0-21swapper/219:07:352
235726199942,7cyclictest0-21swapper/020:25:300
235726699932,89cyclictest0-21swapper/120:20:331
235726199932,88cyclictest0-21swapper/022:35:390
2357261999328,54cyclictest2377271-21tr20:05:220
23634772910,4sleep20-21swapper/219:25:262
235727199912,8cyclictest0-21swapper/323:03:133
235727199893,11cyclictest2409000-21irqstats21:35:333
235727199893,11cyclictest2409000-21irqstats21:35:323
235727199892,82cyclictest1622-21rtkit-daemon00:18:563
2357271998926,10cyclictest2400327-21kernelversion21:10:293
2357271998926,10cyclictest2400327-21kernelversion21:10:293
2357266998880,5cyclictest26-21ksoftirqd/120:58:161
235727199872,28cyclictest1753-21gnome-shell22:38:553
2357261998778,6cyclictest0-21swapper/022:51:230
162399870,9rtkit-daemon1622-21rtkit-daemon23:49:072
2357271998653,28cyclictest2398042-21cat21:05:023
235727199862,26cyclictest1753-21gnome-shell22:52:493
235695228655,25sleep30-21swapper/319:08:003
235693528670,9sleep10-21swapper/119:07:471
235727199852,67cyclictest2357827-21df_inode19:10:213
235727199852,25cyclictest1753-21gnome-shell21:10:003
2357271998516,17cyclictest141rcu_preempt00:33:263
235726699856,18cyclictest0-21swapper/121:05:041
235727199843,25cyclictest1753-21gnome-shell22:58:373
235727199843,24cyclictest1753-21gnome-shell21:31:133
2357271998432,10cyclictest1753-21gnome-shell23:35:273
2357271998432,10cyclictest1753-21gnome-shell23:35:263
235727199842,66cyclictest1753-21gnome-shell21:48:393
235727199842,26cyclictest1753-21gnome-shell21:56:173
235727199842,25cyclictest1753-21gnome-shell19:38:153
2357271998413,16cyclictest141rcu_preempt20:55:363
235727199841,26cyclictest1753-21gnome-shell21:42:573
235727199841,25cyclictest1753-21gnome-shell00:09:243
2357271998412,16cyclictest881251-21Softwar~cThread21:21:233
235727199832,66cyclictest1753-21gnome-shell21:27:253
235727199832,24cyclictest1753-21gnome-shell20:21:393
235727199832,23cyclictest1753-21gnome-shell23:27:553
235727199831,25cyclictest1753-21gnome-shell20:19:323
2357268998332,41cyclictest1753-21gnome-shell00:32:252
2357266998370,8cyclictest2384513-21irqstats20:25:301
235726699834,27cyclictest26-21ksoftirqd/121:50:401
235727199823,7cyclictest141rcu_preempt23:18:133
235727199822,59cyclictest1753-21gnome-shell22:19:253
2357271998224,51cyclictest1753-21gnome-shell20:01:593
235727199819,57cyclictest881251-21Softwar~cThread19:59:023
235727199813,24cyclictest1753-21gnome-shell00:03:303
235727199813,24cyclictest1753-21gnome-shell00:03:293
235727199812,64cyclictest0-21swapper/319:22:153
2357271998119,7cyclictest141rcu_preempt21:18:503
2357271998116,50cyclictest141rcu_preempt22:27:393
2357271998112,15cyclictest141rcu_preempt20:08:023
2357271998111,37cyclictest2424711-21cat22:20:323
2357261998119,19cyclictest881251-21Softwar~cThread22:30:310
235727199802,19cyclictest1753-21gnome-shell19:50:163
235727199802,17cyclictest1753-21gnome-shell23:20:113
235727199801,57cyclictest1753-21gnome-shell19:18:553
235727199801,52cyclictest2463954-21runrttasks00:11:263
235727199801,21cyclictest1753-21gnome-shell21:52:253
2357266998073,4cyclictest0-21swapper/119:45:161
235726699802,22cyclictest26-21ksoftirqd/120:02:121
235727199796,16cyclictest141rcu_preempt22:04:223
235727199793,22cyclictest881251-21Softwar~cThread00:22:553
235727199791,20cyclictest1753-21gnome-shell22:40:583
2357261997969,6cyclictest0-21swapper/000:36:120
235727199782,44cyclictest881251-21Softwar~cThread00:29:133
235727199782,44cyclictest881251-21Softwar~cThread00:29:133
235727199782,17cyclictest0-21swapper/323:05:313
235727199782,12cyclictest880726-21firefox19:32:443
235726699787,10cyclictest26-21ksoftirqd/119:51:471
235726699786,11cyclictest26-21ksoftirqd/122:35:361
2357266997860,11cyclictest26-21ksoftirqd/121:31:101
2357266997823,13cyclictest26-21ksoftirqd/119:30:441
235726199786,46cyclictest13-21ksoftirqd/000:33:340
24713742770,5sleep10-21swapper/100:35:011
235727199773,59cyclictest860997-21snmpd22:30:563
235727199772,19cyclictest1753-21gnome-shell23:30:443
235727199771,56cyclictest1753-21gnome-shell00:37:023
2357268997759,5cyclictest34-21ksoftirqd/222:45:212
2357268997725,10cyclictest881251-21Softwar~cThread19:42:032
235726699771,11cyclictest26-21ksoftirqd/121:55:181
235726199778,12cyclictest13-21ksoftirqd/019:38:380
235726199774,49cyclictest2369933-21date19:45:020
2357261997726,46cyclictest881251-21Softwar~cThread21:28:260
235726199772,55cyclictest13-21ksoftirqd/019:50:180
235727199762,17cyclictest1753-21gnome-shell20:48:543
235727199762,17cyclictest1753-21gnome-shell20:48:543
235727199761,17cyclictest2433984-21runrttasks22:46:273
2357268997660,5cyclictest34-21ksoftirqd/222:25:342
2357268997658,6cyclictest34-21ksoftirqd/222:00:172
235726699768,14cyclictest26-21ksoftirqd/122:45:401
235726699767,10cyclictest26-21ksoftirqd/120:19:551
235726699761,14cyclictest26-21ksoftirqd/120:54:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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