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2025-05-09 - 05:55

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, 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 rack0slot7s.osadl.org (updated Fri May 09, 2025 00:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2614156212772,22sleep20-21swapper/219:06:242
2614145211973,20sleep10-21swapper/119:06:151
2614179210573,23sleep00-21swapper/019:06:420
2614293210273,21sleep30-21swapper/319:08:093
261458899708,39cyclictest0-21swapper/323:10:253
261458299260,25cyclictest0-21swapper/100:18:421
261458699250,25cyclictest0-21swapper/220:07:552
261458299250,24cyclictest0-21swapper/123:31:041
261458699240,24cyclictest0-21swapper/223:48:372
261458299243,20cyclictest0-21swapper/123:05:151
261457999240,24cyclictest0-21swapper/022:34:470
261457999240,15cyclictest0-21swapper/023:25:010
261458699233,1cyclictest0-21swapper/221:15:002
261457999230,15cyclictest0-21swapper/020:42:290
261457999230,15cyclictest0-21swapper/019:29:330
261458299210,16cyclictest0-21swapper/123:23:011
261458899209,11cyclictest0-21swapper/323:34:173
261458299209,10cyclictest0-21swapper/122:47:031
2614582992018,1cyclictest0-21swapper/121:33:451
2614579992012,8cyclictest0-21swapper/022:25:220
261457999200,1cyclictest0-21swapper/023:17:250
261458899199,4cyclictest0-21swapper/300:16:363
261458299199,4cyclictest0-21swapper/121:15:201
261458299191,17cyclictest2629748-21interrupts19:45:141
2614579991918,1cyclictest0-21swapper/000:16:410
261457999190,4cyclictest0-21swapper/023:52:390
261458899188,10cyclictest0-21swapper/322:22:413
2614588991818,0cyclictest0-21swapper/300:35:123
261458299188,4cyclictest0-21swapper/119:14:481
261458299180,17cyclictest0-21swapper/120:47:341
261457999188,10cyclictest0-21swapper/019:55:250
261457999185,1cyclictest0-21swapper/000:27:300
2614588991714,2cyclictest1051-21snmpd21:02:153
261458899170,11cyclictest0-21swapper/323:00:063
261458699174,13cyclictest0-21swapper/222:02:202
2614586991716,1cyclictest0-21swapper/222:58:332
2614586991711,5cyclictest0-21swapper/219:35:032
2614586991710,7cyclictest0-21swapper/222:13:292
261458699170,3cyclictest0-21swapper/222:50:152
261458699170,17cyclictest0-21swapper/219:50:162
261458699170,17cyclictest0-21swapper/200:07:472
261458699170,16cyclictest0-21swapper/220:30:112
261458299174,1cyclictest311ktimers/122:25:151
2614582991715,1cyclictest0-21swapper/120:06:491
2614582991714,2cyclictest1051-21snmpd23:44:021
2614582991713,4cyclictest0-21swapper/120:00:401
2614579991716,1cyclictest0-21swapper/022:52:120
261457999171,16cyclictest0-21swapper/023:40:160
261457999170,17cyclictest0-21swapper/022:44:340
261458899160,8cyclictest0-21swapper/321:16:423
261458899160,7cyclictest0-21swapper/321:06:393
2614586991614,1cyclictest2730439-21awk00:00:172
2614586991613,2cyclictest1051-21snmpd22:31:052
2614586991612,4cyclictest0-21swapper/222:05:432
261458699161,15cyclictest0-21swapper/222:18:472
2614586991611,5cyclictest0-21swapper/200:12:512
261458699160,6cyclictest0-21swapper/221:38:332
261458699160,16cyclictest0-21swapper/223:54:322
261458699160,16cyclictest0-21swapper/223:36:012
261458699160,16cyclictest0-21swapper/222:40:182
2614582991613,2cyclictest1051-21snmpd21:44:241
261458299160,8cyclictest0-21swapper/119:26:301
261458299160,16cyclictest0-21swapper/120:24:371
261458299160,15cyclictest0-21swapper/100:25:541
2614579991611,5cyclictest0-21swapper/000:10:540
261457999160,7cyclictest0-21swapper/023:35:250
261457999160,7cyclictest0-21swapper/023:03:570
261457999160,7cyclictest0-21swapper/021:07:510
261457999160,16cyclictest0-21swapper/022:13:460
261457999160,16cyclictest0-21swapper/020:45:490
261457999160,16cyclictest0-21swapper/000:00:260
261457999160,15cyclictest0-21swapper/020:50:140
261457999160,15cyclictest0-21swapper/019:10:120
261458899155,10cyclictest0-21swapper/322:26:183
261458899152,13cyclictest0-21swapper/322:15:563
2614588991514,1cyclictest0-21swapper/322:55:173
2614588991511,4cyclictest0-21swapper/323:56:413
2614588991511,4cyclictest0-21swapper/322:37:593
2614588991511,4cyclictest0-21swapper/319:12:273
261458899150,6cyclictest0-21swapper/319:31:513
261458899150,15cyclictest481rcuc/300:25:163
261458899150,15cyclictest0-21swapper/320:54:003
261458899150,15cyclictest0-21swapper/319:47:283
261458699152,13cyclictest0-21swapper/221:10:112
2614586991511,4cyclictest0-21swapper/223:40:042
261458699150,1cyclictest0-21swapper/219:25:182
261458699150,15cyclictest0-21swapper/219:23:092
2614582991514,1cyclictest0-21swapper/122:20:151
2614582991511,4cyclictest0-21swapper/122:37:441
2614582991510,4cyclictest0-21swapper/119:24:541
261458299150,15cyclictest0-21swapper/120:10:511
261458299150,14cyclictest0-21swapper/120:30:201
2614579991514,1cyclictest0-21swapper/019:45:180
2614579991512,2cyclictest1051-21snmpd19:18:050
261457999150,7cyclictest0-21swapper/023:08:240
261457999150,15cyclictest0-21swapper/020:10:170
261458899145,9cyclictest0-21swapper/323:06:003
2614588991411,2cyclictest873-21abrt-dump-journ21:09:593
2614588991410,4cyclictest0-21swapper/320:25:233
261458899140,14cyclictest0-21swapper/322:40:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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