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2025-12-08 - 17:13

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #4

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.
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 rack0slot4s.osadl.org (updated Mon Dec 08, 2025 00:46:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8446502375345,23sleep30-21swapper/319:06:309
8447382366359,5sleep80-21swapper/819:07:4014
8448762359319,31sleep100-21swapper/1019:09:352
8447342359317,14sleep40-21swapper/419:07:3610
8448582356336,13sleep110-21swapper/1119:09:193
8446722354334,13sleep60-21swapper/619:06:4912
8448232353315,30sleep00-21swapper/019:08:520
8447622352331,14sleep150-21swapper/1519:08:037
8446122350327,14sleep50-21swapper/519:06:0011
8447242349327,14sleep130-21swapper/1319:07:295
8447792347328,13sleep90-21swapper/919:08:1315
8447182347325,13sleep70-21swapper/719:07:2313
8447442346325,13sleep140-21swapper/1419:07:466
8448782344324,13sleep120-21swapper/1219:09:374
8448652343322,14sleep10-21swapper/119:09:251
8414582341323,12sleep20-21swapper/219:05:098
84534699415,32cyclictest865428-21kworker/u32:0+events_unbound19:34:274
845323993510,0cyclictest0-21swapper/519:45:4511
845323993410,11cyclictest0-21swapper/522:08:3211
845323993410,11cyclictest0-21swapper/520:40:4011
84534699332,31cyclictest999741-21kworker/u32:1+events_unbound23:06:214
84534699332,31cyclictest999741-21kworker/u32:1+events_unbound23:06:214
84533199330,32cyclictest0-21swapper/723:29:0613
84533199330,30cyclictest0-21swapper/721:23:2513
84532399339,11cyclictest0-21swapper/522:19:3111
845352993229,3cyclictest0-21swapper/1419:35:166
84535299320,31cyclictest0-21swapper/1419:40:226
84535299320,31cyclictest0-21swapper/1400:06:126
845348993229,2cyclictest824688-21kworker/u32:1+flush-259:019:30:195
84534699320,32cyclictest0-21swapper/1221:41:434
84534699320,29cyclictest0-21swapper/1223:48:424
84534699320,29cyclictest0-21swapper/1223:35:294
84534699320,29cyclictest0-21swapper/1223:33:314
84534699320,29cyclictest0-21swapper/1223:12:514
84534699320,29cyclictest0-21swapper/1223:12:514
84534699320,29cyclictest0-21swapper/1222:53:174
84534699320,29cyclictest0-21swapper/1222:46:114
84534699320,29cyclictest0-21swapper/1222:23:174
84534699320,29cyclictest0-21swapper/1222:16:154
84534699320,29cyclictest0-21swapper/1222:05:594
84534699320,29cyclictest0-21swapper/1222:04:434
84534699320,29cyclictest0-21swapper/1221:55:354
84534699320,29cyclictest0-21swapper/1221:45:554
84534699320,29cyclictest0-21swapper/1221:21:374
84534699320,29cyclictest0-21swapper/1221:15:594
84534699320,29cyclictest0-21swapper/1221:06:254
84534699320,29cyclictest0-21swapper/1221:03:354
84534699320,29cyclictest0-21swapper/1220:52:034
84534699320,29cyclictest0-21swapper/1220:32:254
84534699320,29cyclictest0-21swapper/1220:21:014
84534699320,29cyclictest0-21swapper/1220:14:194
84534699320,29cyclictest0-21swapper/1220:01:354
84534699320,29cyclictest0-21swapper/1220:01:354
84534699320,29cyclictest0-21swapper/1219:37:354
84534699320,29cyclictest0-21swapper/1219:29:514
84534699320,29cyclictest0-21swapper/1219:10:514
84534699320,29cyclictest0-21swapper/1200:38:274
84534699320,29cyclictest0-21swapper/1200:34:434
84534699320,29cyclictest0-21swapper/1200:26:194
84534699320,29cyclictest0-21swapper/1200:16:334
84534699320,29cyclictest0-21swapper/1200:10:254
84534699320,29cyclictest0-21swapper/1200:07:474
84533699320,29cyclictest0-21swapper/900:30:1315
845331993229,3cyclictest2395797-21snmpd20:51:5713
84532399329,10cyclictest0-21swapper/523:47:2311
84532399328,11cyclictest0-21swapper/521:24:3611
845356993129,1cyclictest956644-21ethtool21:20:177
84535699310,30cyclictest0-21swapper/1523:18:237
84535699310,30cyclictest0-21swapper/1522:50:287
84535699310,30cyclictest0-21swapper/1521:35:197
845352993128,3cyclictest923346-21mii-tool20:40:196
84535299310,30cyclictest0-21swapper/1421:11:336
845348993130,1cyclictest0-21swapper/1323:17:315
84534899310,30cyclictest0-21swapper/1322:28:085
84534899310,30cyclictest0-21swapper/1320:07:145
84534899310,30cyclictest0-21swapper/1320:07:145
84534699310,28cyclictest851035-21libvirt-mem19:15:014
84534699310,28cyclictest0-21swapper/1223:56:214
84534699310,28cyclictest0-21swapper/1223:52:444
84534699310,28cyclictest0-21swapper/1223:27:094
84534699310,28cyclictest0-21swapper/1223:20:094
84534699310,28cyclictest0-21swapper/1223:16:294
84534699310,28cyclictest0-21swapper/1222:57:294
84534699310,28cyclictest0-21swapper/1222:35:314
84534699310,28cyclictest0-21swapper/1222:31:014
84534699310,28cyclictest0-21swapper/1222:26:474
84534699310,28cyclictest0-21swapper/1221:38:314
84534699310,28cyclictest0-21swapper/1221:26:594
84534699310,28cyclictest0-21swapper/1220:42:594
84534699310,28cyclictest0-21swapper/1220:37:234
84534699310,28cyclictest0-21swapper/1220:15:454
84534699310,28cyclictest0-21swapper/1220:07:494
84534699310,28cyclictest0-21swapper/1220:07:484
84534699310,28cyclictest0-21swapper/1219:53:094
84534699310,28cyclictest0-21swapper/1200:00:134
845343993129,2cyclictest962339-21kworker/u32:0+events_unbound22:27:103
84534399310,30cyclictest0-21swapper/1123:10:143
84534399310,30cyclictest0-21swapper/1123:10:143
84534099310,30cyclictest0-21swapper/1019:17:482
84533699310,30cyclictest0-21swapper/922:01:4415
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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