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2026-05-13 - 04:39

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 Wed May 13, 2026 00:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22693582369330,14sleep70-21swapper/719:05:5213
22693972363327,12sleep40-21swapper/419:06:2110
22695112362344,12sleep20-21swapper/219:07:568
22693822354334,13sleep60-21swapper/619:06:0812
22695322353315,13sleep00-21swapper/019:08:110
22694682352333,12sleep140-21swapper/1419:07:216
22693852352332,13sleep90-21swapper/919:06:1015
22694392350330,13sleep80-21swapper/819:06:5814
22694032350329,14sleep100-21swapper/1019:06:272
22693482349329,13sleep150-21swapper/1519:05:457
22662092349329,13sleep110-21swapper/1119:05:083
22693892348328,13sleep130-21swapper/1319:06:145
22693772348328,13sleep10-21swapper/119:06:021
22695522347326,14sleep30-21swapper/319:08:299
22693552347327,13sleep50-21swapper/519:05:5011
22662102344324,13sleep120-21swapper/1219:05:094
2270119994141,0cyclictest0-21swapper/1120:54:403
227012799350,11cyclictest2407297-21unixbench_multi21:35:256
227012799350,11cyclictest2407297-21unixbench_multi21:35:246
2270112993529,3cyclictest0-21swapper/920:03:2815
2270112993528,3cyclictest0-21swapper/920:54:4015
2270119993434,0cyclictest0-21swapper/1121:48:333
2270119993427,7cyclictest0-21swapper/1120:03:293
2270088993412,22cyclictest0-21swapper/121:27:351
2270088993412,22cyclictest0-21swapper/121:27:341
2270112993333,0cyclictest0-21swapper/921:48:3215
2270112993333,0cyclictest0-21swapper/920:59:2115
2270106993331,2cyclictest2465834-21kworker/u32:1+flush-259:022:25:1913
2270090993331,2cyclictest2503411-21kworker/u32:2+flush-259:023:20:188
227013099320,31cyclictest0-21swapper/1522:49:097
227013099320,29cyclictest0-21swapper/1519:50:157
227012599320,31cyclictest0-21swapper/1319:26:265
2270119993232,0cyclictest0-21swapper/1121:41:383
2270119993232,0cyclictest0-21swapper/1100:38:253
2270119993232,0cyclictest0-21swapper/1100:28:503
2270119993228,4cyclictest2184663-21kworker/11:1+events19:37:533
227011999322,30cyclictest1231ktimers/1121:54:273
2270112993232,0cyclictest0-21swapper/919:25:2915
227013099310,30cyclictest0-21swapper/1500:23:297
227013099310,30cyclictest0-21swapper/1500:11:267
2270127993129,1cyclictest1774-21snmpd19:58:286
227012799310,30cyclictest0-21swapper/1423:25:276
227012799310,30cyclictest0-21swapper/1420:50:456
227012799310,30cyclictest0-21swapper/1419:30:166
227012799310,30cyclictest0-21swapper/1400:26:306
227012599310,30cyclictest0-21swapper/1323:05:335
2270119993131,0cyclictest0-21swapper/1121:08:093
2270119993131,0cyclictest0-21swapper/1120:57:513
2270119993131,0cyclictest0-21swapper/1119:17:443
227011999311,1cyclictest1231ktimers/1122:37:043
227011999310,31cyclictest1231ktimers/1100:22:253
2270104993130,1cyclictest1774-21snmpd00:17:4212
227010499310,30cyclictest0-21swapper/619:23:1812
227009899310,30cyclictest0-21swapper/422:46:0810
227009499310,30cyclictest0-21swapper/322:18:299
2270088993130,1cyclictest2483968-21kworker/u32:1+events_unbound22:55:201
227008899310,30cyclictest0-21swapper/121:54:411
227008499310,30cyclictest0-21swapper/019:55:150
2270130993029,1cyclictest0-21swapper/1519:34:237
227013099300,29cyclictest0-21swapper/1520:21:047
227012799300,1cyclictest0-21swapper/1421:24:496
227012599300,29cyclictest0-21swapper/1320:44:565
227012599300,1cyclictest0-21swapper/1323:44:195
2270121993029,1cyclictest1774-21snmpd20:18:404
2270121993029,1cyclictest0-21swapper/1221:17:284
227012199300,29cyclictest0-21swapper/1221:55:164
227012199300,1cyclictest0-21swapper/1223:30:144
227012199300,1cyclictest0-21swapper/1219:17:504
2270119993030,0cyclictest0-21swapper/1123:38:323
2270119993030,0cyclictest0-21swapper/1119:53:143
227011999300,30cyclictest0-21swapper/1121:01:593
227011999300,30cyclictest0-21swapper/1120:32:533
2270115993030,0cyclictest2471039-21kworker/10:0+events22:37:072
227011299300,1cyclictest2446309-21ssh22:05:2215
2270109993030,0cyclictest2314956-21mii-tool20:00:1314
227010999300,29cyclictest0-21swapper/823:22:0714
227010999300,29cyclictest0-21swapper/823:10:4614
2270106993029,1cyclictest1774-21snmpd00:36:2413
227010699300,30cyclictest0-21swapper/721:45:4913
227010699300,1cyclictest2451976-21ssh22:10:1913
2270104993029,1cyclictest2339984-21mii-tool20:30:1312
2270104993029,1cyclictest1774-21snmpd20:51:3012
227010499300,27cyclictest0-21swapper/620:05:1512
227010499300,1cyclictest0-21swapper/622:02:4312
2270099993029,1cyclictest1774-21snmpd21:11:2311
2270099993029,1cyclictest1774-21snmpd20:14:3411
2270099993029,1cyclictest1774-21snmpd19:34:4411
2270099993029,1cyclictest0-21swapper/522:18:1411
227009999300,1cyclictest0-21swapper/519:45:1511
2270098993029,1cyclictest1774-21snmpd22:17:4110
2270098993029,1cyclictest1774-21snmpd00:12:2710
2270094993029,1cyclictest1774-21snmpd21:31:139
2270094993029,1cyclictest1774-21snmpd21:31:129
2270094993029,1cyclictest1774-21snmpd21:29:349
2270094993029,1cyclictest1774-21snmpd21:29:339
2270094993028,1cyclictest2632253-21awk00:30:169
227009499300,29cyclictest0-21swapper/319:44:219
227009499300,27cyclictest0-21swapper/321:40:149
2270088993029,1cyclictest2285773-21mii-tool19:25:161
2270088993029,1cyclictest1774-21snmpd21:49:431
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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