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2026-06-02 - 00:55

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #8

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 rackbslot8s (updated Mon Jun 01, 2026 12:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12159972122107,10sleep60-21swapper/607:08:416
12159892119105,9sleep70-21swapper/707:08:347
12160562118104,9sleep00-21swapper/007:09:310
12160492118104,9sleep20-21swapper/207:09:252
12157992115100,10sleep10-21swapper/107:05:471
1216025211499,10sleep50-21swapper/507:09:055
1215790211399,9sleep30-21swapper/307:05:423
1215782211298,9sleep40-21swapper/407:05:354
1216326991040,102cyclictest0-21swapper/209:15:492
121633499102100,2cyclictest553-21snmpd09:59:324
12163179910299,3cyclictest553-21snmpd09:35:110
1216317991020,102cyclictest0-21swapper/010:55:220
1216317991020,102cyclictest0-21swapper/009:30:140
1216345991010,101cyclictest0-21swapper/709:07:367
1216345991010,100cyclictest0-21swapper/712:03:437
12163439910199,2cyclictest553-21snmpd11:21:276
12163439910199,1cyclictest553-21snmpd12:17:226
1216343991010,100cyclictest0-21swapper/611:19:326
1216343991010,100cyclictest0-21swapper/607:25:266
121633899101100,0cyclictest605-21lldpd08:44:265
12163349910199,2cyclictest553-21snmpd11:54:134
12163349910199,2cyclictest553-21snmpd11:14:114
12163349910199,2cyclictest553-21snmpd10:03:414
1216334991010,100cyclictest0-21swapper/409:40:404
12163299910199,2cyclictest553-21snmpd12:22:133
12163299910199,2cyclictest553-21snmpd11:48:043
12163299910199,2cyclictest553-21snmpd11:48:033
12163299910199,2cyclictest553-21snmpd09:31:223
12163269910199,2cyclictest553-21snmpd11:19:352
121632699101100,1cyclictest553-21snmpd11:59:392
12163219910199,2cyclictest553-21snmpd11:18:141
1216321991010,100cyclictest0-21swapper/107:53:071
12163179910199,2cyclictest553-21snmpd11:34:270
12163179910198,3cyclictest553-21snmpd12:35:440
1216317991010,101cyclictest0-21swapper/010:08:240
1216317991010,100cyclictest0-21swapper/011:09:350
1216317991010,100cyclictest0-21swapper/007:12:050
121634599100100,0cyclictest0-21swapper/711:43:437
121634599100100,0cyclictest0-21swapper/711:43:427
1216345991000,99cyclictest0-21swapper/712:05:217
1216345991000,99cyclictest0-21swapper/709:31:237
1216345991000,99cyclictest0-21swapper/709:26:327
1216345991000,99cyclictest0-21swapper/708:11:237
1216345991000,99cyclictest0-21swapper/707:23:477
1216345991000,99cyclictest0-21swapper/707:19:007
1216345991000,100cyclictest0-21swapper/709:39:557
12163439910099,1cyclictest553-21snmpd10:36:036
12163439910099,1cyclictest553-21snmpd10:22:006
12163439910099,1cyclictest553-21snmpd09:21:306
12163439910099,1cyclictest553-21snmpd08:30:156
1216343991000,99cyclictest0-21swapper/610:46:196
1216343991000,99cyclictest0-21swapper/610:29:076
1216343991000,99cyclictest0-21swapper/609:14:426
1216343991000,99cyclictest0-21swapper/607:51:576
1216343991000,100cyclictest0-21swapper/611:05:346
1216343991000,100cyclictest0-21swapper/610:16:296
12163389910099,1cyclictest553-21snmpd10:56:015
12163389910099,1cyclictest553-21snmpd09:08:125
12163389910099,1cyclictest1358168-21cat10:20:155
12163389910098,2cyclictest553-21snmpd10:08:475
1216338991000,100cyclictest0-21swapper/511:04:195
12163349910099,1cyclictest553-21snmpd12:00:484
12163349910099,1cyclictest553-21snmpd11:08:164
12163349910099,1cyclictest553-21snmpd09:52:034
12163349910099,1cyclictest553-21snmpd09:05:544
12163349910099,1cyclictest553-21snmpd07:37:474
12163349910099,1cyclictest553-21snmpd07:34:514
12163349910099,1cyclictest553-21snmpd07:13:384
12163349910099,1cyclictest1307460-21cat09:35:154
1216334991000,1cyclictest0-21swapper/412:35:444
1216334991000,100cyclictest0-21swapper/412:33:524
1216334991000,100cyclictest0-21swapper/412:14:584
1216334991000,100cyclictest0-21swapper/411:01:164
1216334991000,100cyclictest0-21swapper/410:18:134
1216334991000,100cyclictest0-21swapper/408:20:154
12163299910099,1cyclictest553-21snmpd12:34:133
12163299910099,1cyclictest553-21snmpd12:08:553
12163299910099,1cyclictest553-21snmpd10:26:303
12163299910099,1cyclictest553-21snmpd09:51:043
12163299910099,1cyclictest553-21snmpd09:11:333
12163269910099,1cyclictest553-21snmpd07:54:192
12163269910099,1cyclictest1271899-21cat08:55:152
1216326991000,99cyclictest0-21swapper/212:38:182
1216326991000,99cyclictest0-21swapper/210:40:042
1216326991000,99cyclictest0-21swapper/208:13:222
1216326991000,99cyclictest0-21swapper/207:59:072
1216326991000,99cyclictest0-21swapper/207:40:572
1216326991000,99cyclictest0-21swapper/207:28:242
1216326991000,100cyclictest0-21swapper/211:40:452
1216326991000,100cyclictest0-21swapper/211:40:452
1216326991000,100cyclictest0-21swapper/210:21:362
1216326991000,100cyclictest0-21swapper/210:10:152
1216326991000,100cyclictest0-21swapper/209:50:042
12163219910099,1cyclictest553-21snmpd08:13:581
1216321991000,99cyclictest0-21swapper/109:56:201
1216321991000,1cyclictest0-21swapper/111:43:241
1216321991000,1cyclictest0-21swapper/111:43:241
1216321991000,100cyclictest0-21swapper/110:54:041
1216321991000,100cyclictest0-21swapper/109:50:431
1216321991000,100cyclictest0-21swapper/109:42:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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