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2025-12-15 - 21:18

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 Dec 15, 2025 12:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3681442140108,10sleep20-21swapper/207:06:282
3662692130115,9sleep40-21swapper/407:05:014
3683442127112,10sleep70-21swapper/707:09:217
3680782127112,10sleep10-21swapper/107:05:311
3683372123109,9sleep00-21swapper/007:09:140
3683582120105,10sleep30-21swapper/307:09:333
3682392118104,9sleep50-21swapper/507:07:525
368065211398,10sleep60-21swapper/607:05:206
36863699103100,3cyclictest556-21snmpd10:32:565
368642991020,100cyclictest0-21swapper/711:49:137
368642991020,100cyclictest0-21swapper/709:40:447
368636991020,102cyclictest0-21swapper/512:25:145
368636991020,102cyclictest0-21swapper/512:25:145
3686279910299,3cyclictest556-21snmpd10:41:133
368642991010,101cyclictest0-21swapper/711:07:387
3686389910199,2cyclictest556-21snmpd10:32:196
3686389910199,2cyclictest556-21snmpd08:05:146
3686389910199,2cyclictest556-21snmpd07:47:446
3686389910198,3cyclictest556-21snmpd12:35:086
3686389910198,3cyclictest556-21snmpd09:22:586
3686389910198,3cyclictest556-21snmpd08:47:106
368638991010,101cyclictest0-21swapper/611:46:026
368638991010,101cyclictest0-21swapper/611:16:066
368636991010,101cyclictest0-21swapper/511:07:325
368636991010,100cyclictest0-21swapper/508:34:485
368636991010,100cyclictest0-21swapper/507:37:585
3686319910199,2cyclictest556-21snmpd09:57:244
368631991010,100cyclictest0-21swapper/410:51:084
368631991010,100cyclictest0-21swapper/408:23:004
3686279910199,2cyclictest556-21snmpd12:09:143
3686279910199,2cyclictest556-21snmpd11:54:043
3686279910199,2cyclictest556-21snmpd08:27:513
36862799101100,1cyclictest556-21snmpd09:16:413
368622991010,99cyclictest0-21swapper/207:33:102
3686199910199,2cyclictest556-21snmpd11:55:351
3686199910199,2cyclictest556-21snmpd11:53:191
3686199910199,2cyclictest556-21snmpd10:17:161
368619991010,100cyclictest0-21swapper/110:24:221
36861499101100,1cyclictest556-21snmpd10:37:160
368614991010,101cyclictest0-21swapper/009:52:180
368642991000,99cyclictest0-21swapper/710:54:237
368642991000,100cyclictest0-21swapper/709:50:097
368642991000,100cyclictest0-21swapper/708:02:027
368642991000,0cyclictest0-21swapper/709:16:137
3686389910099,1cyclictest556-21snmpd11:57:016
3686389910099,1cyclictest556-21snmpd08:40:226
3686389910099,1cyclictest556-21snmpd08:32:276
3686389910099,1cyclictest556-21snmpd07:34:116
3686389910099,1cyclictest458408-21cat09:35:146
3686389910098,2cyclictest556-21snmpd11:41:106
3686389910098,2cyclictest556-21snmpd10:29:046
368638991000,99cyclictest0-21swapper/610:51:416
368638991000,100cyclictest0-21swapper/610:15:146
368638991000,100cyclictest0-21swapper/608:26:006
3686369910099,1cyclictest629232-21cat12:20:135
3686369910099,1cyclictest556-21snmpd11:49:315
3686369910099,1cyclictest556-21snmpd10:35:135
3686369910099,1cyclictest556-21snmpd10:24:435
3686369910099,1cyclictest556-21snmpd09:48:155
3686369910099,1cyclictest556-21snmpd09:27:565
3686369910099,1cyclictest556-21snmpd09:19:255
3686369910099,1cyclictest556-21snmpd08:55:325
3686369910097,3cyclictest556-21snmpd09:35:055
368636991000,99cyclictest0-21swapper/507:27:385
368636991000,100cyclictest0-21swapper/511:44:375
3686319910099,1cyclictest556-21snmpd09:07:344
3686319910099,1cyclictest556-21snmpd08:03:264
3686319910099,1cyclictest556-21snmpd07:53:124
3686319910099,1cyclictest556-21snmpd07:53:114
3686319910099,1cyclictest556-21snmpd07:31:104
3686319910098,2cyclictest556-21snmpd10:47:474
3686319910098,2cyclictest556-21snmpd09:15:224
368631991000,99cyclictest0-21swapper/412:24:594
368631991000,99cyclictest0-21swapper/408:31:284
368631991000,100cyclictest0-21swapper/410:25:434
368631991000,100cyclictest0-21swapper/409:25:464
368631991000,0cyclictest0-21swapper/410:35:164
3686279910099,1cyclictest556-21snmpd11:07:383
3686279910099,1cyclictest556-21snmpd09:10:583
3686279910098,2cyclictest556-21snmpd10:39:583
3686279910098,2cyclictest556-21snmpd10:14:303
3686279910098,2cyclictest556-21snmpd07:25:313
3686279910097,3cyclictest556-21snmpd11:16:043
36862799100100,0cyclictest556-21snmpd12:30:473
36862799100100,0cyclictest556-21snmpd12:30:473
36862799100100,0cyclictest556-21snmpd10:04:123
3686229910099,1cyclictest556-21snmpd12:20:202
3686229910099,1cyclictest556-21snmpd11:03:502
368622991000,99cyclictest0-21swapper/211:34:392
368622991000,99cyclictest0-21swapper/210:31:072
368622991000,100cyclictest0-21swapper/211:35:282
3686199910099,1cyclictest556-21snmpd12:07:111
3686199910099,1cyclictest556-21snmpd09:26:081
3686199910099,1cyclictest556-21snmpd08:47:401
3686199910099,1cyclictest556-21snmpd07:18:161
3686199910099,1cyclictest531247-21cat10:45:151
3686199910098,2cyclictest556-21snmpd09:58:271
3686199910098,1cyclictest593-21lldpd09:03:401
368619991000,99cyclictest0-21swapper/109:45:081
368619991000,99cyclictest0-21swapper/109:12:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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