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2026-04-17 - 07:01

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 Fri Apr 17, 2026 00:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8090222401381,13sleep40-21swapper/419:08:2610
8089212399378,14sleep100-21swapper/1019:07:282
8067282397388,6sleep60-21swapper/619:05:1612
8090182365358,5sleep30-21swapper/319:08:259
8090502362321,14sleep70-21swapper/719:08:4613
8091242360340,13sleep110-21swapper/1119:09:373
8090812352333,12sleep150-21swapper/1519:09:107
8055992351333,12sleep90-21swapper/919:05:0215
8091062350330,13sleep130-21swapper/1319:09:245
8090802350330,13sleep140-21swapper/1419:09:096
8090152350329,14sleep10-21swapper/119:08:241
8091212349329,13sleep80-21swapper/819:09:3514
8088392349330,13sleep120-21swapper/1219:06:414
8087532349329,13sleep20-21swapper/219:05:438
8089312347327,13sleep00-21swapper/019:07:350
8088102346326,13sleep50-21swapper/519:06:1911
80962099408,18cyclictest1014028-21ssh22:28:086
809620993410,10cyclictest0-21swapper/1400:17:586
809592993431,3cyclictest0-21swapper/520:45:1311
809618993330,3cyclictest1101998-21ethtool23:35:155
80962399320,29cyclictest0-21swapper/1522:50:167
80962099327,14cyclictest0-21swapper/1423:23:036
80962099320,29cyclictest0-21swapper/1421:55:156
80958499320,29cyclictest0-21swapper/220:45:108
809623993129,1cyclictest1774-21snmpd19:30:357
80962399310,30cyclictest921987-21ssh21:16:177
80962399310,30cyclictest0-21swapper/1519:44:277
80962099317,13cyclictest0-21swapper/1420:27:196
809620993118,0cyclictest1129862-21ssh23:56:006
80961899310,30cyclictest0-21swapper/1322:45:145
80961399310,30cyclictest928383-21ssh21:21:024
80961399310,30cyclictest0-21swapper/1222:48:524
80961399310,30cyclictest0-21swapper/1221:15:374
80961399310,30cyclictest0-21swapper/1200:21:034
809611993131,0cyclictest0-21swapper/1123:48:393
809611993131,0cyclictest0-21swapper/1120:25:293
80961199310,30cyclictest0-21swapper/1100:25:163
809608993130,1cyclictest873351-21kworker/10:0+events21:30:402
809608993130,1cyclictest873351-21kworker/10:0+events21:30:392
809608993130,1cyclictest1774-21snmpd22:00:302
809608993130,1cyclictest1092409-21kworker/10:0+events00:07:252
809608993129,1cyclictest1774-21snmpd23:58:212
80960899310,30cyclictest0-21swapper/1000:16:412
809604993130,1cyclictest0-21swapper/921:44:2115
80960499310,30cyclictest0-21swapper/920:36:0115
809597993128,3cyclictest1774-21snmpd23:25:2812
80959799310,30cyclictest0-21swapper/621:31:3212
80959799310,30cyclictest0-21swapper/621:31:3112
80959299310,30cyclictest0-21swapper/523:48:0211
80959199310,30cyclictest0-21swapper/419:15:0110
80958499310,30cyclictest0-21swapper/221:45:028
80958199310,30cyclictest0-21swapper/123:20:151
80957899310,30cyclictest0-21swapper/020:40:100
809623993029,1cyclictest1774-21snmpd20:19:117
80962399300,29cyclictest0-21swapper/1521:13:107
809620993029,1cyclictest825249-21mii-tool19:25:136
80962099300,30cyclictest0-21swapper/1423:25:326
80962099300,1cyclictest0-21swapper/1400:05:156
80961899300,30cyclictest0-21swapper/1319:17:135
809613993029,1cyclictest1774-21snmpd23:16:324
809611993030,0cyclictest0-21swapper/1122:26:233
809611993030,0cyclictest0-21swapper/1122:11:253
809611993030,0cyclictest0-21swapper/1121:55:183
809611993030,0cyclictest0-21swapper/1121:24:163
809611993030,0cyclictest0-21swapper/1100:33:073
80961199300,29cyclictest0-21swapper/1119:40:143
809608993029,1cyclictest981981-21kworker/10:2+events23:08:212
809608993029,1cyclictest981981-21kworker/10:2+events22:27:052
809608993029,1cyclictest1774-21snmpd23:23:222
809608993029,1cyclictest1774-21snmpd21:44:272
809608993029,1cyclictest1158704-21kworker/10:1+events00:39:092
809608993029,1cyclictest1158704-21kworker/10:1+events00:39:082
809608993029,1cyclictest1092409-21kworker/10:0+events23:31:552
80960499300,30cyclictest0-21swapper/923:29:5015
80960499300,30cyclictest0-21swapper/923:09:4115
809602993029,1cyclictest1774-21snmpd22:54:4314
809602993029,1cyclictest1774-21snmpd22:36:4614
809602993029,1cyclictest1082538-21ethtool23:20:1414
809599993029,1cyclictest0-21swapper/720:37:3713
809597993028,2cyclictest1774-21snmpd23:35:5012
809597993028,1cyclictest1774-21snmpd22:26:5112
809597993027,3cyclictest1774-21snmpd23:03:5812
80959799300,1cyclictest0-21swapper/621:55:1512
809592993029,1cyclictest1774-21snmpd19:39:4311
809592993029,1cyclictest0-21swapper/519:10:5911
80959299300,29cyclictest0-21swapper/522:45:1311
80959299300,29cyclictest0-21swapper/522:23:4011
809591993029,1cyclictest1774-21snmpd21:21:4710
809591993029,1cyclictest1774-21snmpd20:25:2410
809591993027,1cyclictest0-21swapper/400:10:1610
809591993026,4cyclictest1774-21snmpd00:33:0110
809587993029,1cyclictest1774-21snmpd21:05:319
809587993029,1cyclictest1774-21snmpd21:00:289
809587993029,1cyclictest1774-21snmpd20:31:019
809587993028,2cyclictest779382-21kworker/u32:0+flush-259:019:10:189
80958799300,29cyclictest0-21swapper/320:00:249
809584993029,1cyclictest1774-21snmpd20:08:128
809584993029,1cyclictest0-21swapper/200:16:578
809584993026,2cyclictest0-21swapper/200:00:138
80958499300,30cyclictest0-21swapper/222:04:098
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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