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2026-01-01 - 17:51

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 Thu Jan 01, 2026 12:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30617552132116,10sleep30-21swapper/307:08:063
30617912129113,10sleep10-21swapper/107:08:361
30618212126112,9sleep40-21swapper/407:09:044
30617872125110,10sleep60-21swapper/607:08:336
30617662125110,9sleep50-21swapper/507:08:175
30617632122107,10sleep20-21swapper/207:08:132
306212199120119,1cyclictest556-21snmpd11:08:232
30617992120105,10sleep00-21swapper/007:08:430
30617792119105,9sleep70-21swapper/707:08:267
306213699104103,1cyclictest3095763-21kworker/6:110:29:376
306213699103102,1cyclictest3095763-21kworker/6:109:55:556
306212899103101,1cyclictest0-21swapper/412:23:224
3062140991020,100cyclictest0-21swapper/709:47:237
30621269910299,3cyclictest556-21snmpd11:10:293
30621269910299,3cyclictest556-21snmpd07:39:303
30621219910299,3cyclictest556-21snmpd09:31:112
30621179910299,1cyclictest556-21snmpd12:17:561
30621179910299,0cyclictest556-21snmpd11:55:031
30621179910299,0cyclictest556-21snmpd10:45:161
30621179910298,1cyclictest556-21snmpd09:49:561
3062117991020,99cyclictest0-21swapper/111:13:391
3062117991020,99cyclictest0-21swapper/111:04:261
3062140991010,101cyclictest0-21swapper/710:09:357
3062140991010,101cyclictest0-21swapper/707:36:547
3062140991010,100cyclictest0-21swapper/712:30:227
3062140991010,100cyclictest0-21swapper/709:57:387
3062140991010,100cyclictest0-21swapper/707:14:027
3062140991010,0cyclictest0-21swapper/709:16:587
30621369910199,1cyclictest556-21snmpd10:19:006
306213699101100,1cyclictest556-21snmpd09:42:086
3062128991010,99cyclictest0-21swapper/411:50:184
30621269910199,2cyclictest556-21snmpd12:33:363
30621269910199,2cyclictest556-21snmpd09:30:583
30621269910199,2cyclictest556-21snmpd08:31:513
30621269910198,3cyclictest556-21snmpd12:05:313
30621269910198,3cyclictest556-21snmpd11:33:573
30621269910198,3cyclictest556-21snmpd10:39:273
30621219910199,2cyclictest556-21snmpd11:01:492
30621219910198,3cyclictest556-21snmpd09:08:482
3062121991010,99cyclictest3123451-21diskmemload11:23:052
3062121991010,101cyclictest0-21swapper/210:49:162
3062121991010,101cyclictest0-21swapper/210:28:222
3062121991010,100cyclictest0-21swapper/212:10:172
3062121991010,100cyclictest0-21swapper/210:01:332
30621179910199,1cyclictest556-21snmpd09:50:261
30621179910198,1cyclictest556-21snmpd11:08:291
3062117991010,99cyclictest0-21swapper/108:57:001
3062117991010,101cyclictest0-21swapper/112:08:351
3062117991010,100cyclictest0-21swapper/109:35:101
3062117991010,0cyclictest0-21swapper/112:39:561
30621139910199,2cyclictest556-21snmpd11:53:300
30621139910199,2cyclictest556-21snmpd11:22:470
30621139910199,2cyclictest556-21snmpd11:05:350
30621139910198,3cyclictest556-21snmpd10:43:520
3062113991010,99cyclictest0-21swapper/008:15:100
3062113991010,101cyclictest0-21swapper/010:58:290
3062113991010,101cyclictest0-21swapper/010:29:150
3062140991000,99cyclictest0-21swapper/710:41:527
3062140991000,99cyclictest0-21swapper/708:46:547
3062140991000,99cyclictest0-21swapper/708:11:377
3062140991000,99cyclictest0-21swapper/708:07:527
3062140991000,100cyclictest0-21swapper/708:44:217
3062140991000,0cyclictest0-21swapper/709:22:227
30621369910099,1cyclictest556-21snmpd11:53:046
30621369910099,1cyclictest556-21snmpd10:02:236
3062136991000,99cyclictest0-21swapper/609:07:186
3062136991000,100cyclictest0-21swapper/611:57:226
3062136991000,100cyclictest0-21swapper/611:43:276
3062136991000,100cyclictest0-21swapper/611:08:076
30621329910099,1cyclictest556-21snmpd10:04:115
30621329910099,1cyclictest556-21snmpd08:56:475
30621329910099,1cyclictest556-21snmpd08:14:505
30621329910099,1cyclictest3152375-21cat09:35:155
30621329910098,2cyclictest556-21snmpd10:28:575
30621329910098,2cyclictest556-21snmpd07:55:065
3062132991000,99cyclictest0-21swapper/511:33:355
3062132991000,99cyclictest0-21swapper/511:24:035
3062132991000,99cyclictest0-21swapper/511:05:585
3062132991000,99cyclictest0-21swapper/507:16:005
30621289910099,1cyclictest556-21snmpd12:28:414
30621289910099,1cyclictest556-21snmpd11:46:374
30621289910099,1cyclictest556-21snmpd11:00:014
30621289910099,1cyclictest556-21snmpd10:21:214
30621289910099,1cyclictest556-21snmpd08:49:084
30621289910099,1cyclictest556-21snmpd08:38:214
30621289910099,1cyclictest556-21snmpd08:17:494
30621289910099,1cyclictest556-21snmpd07:53:364
3062128991000,100cyclictest0-21swapper/408:11:464
30621269910099,1cyclictest556-21snmpd10:24:153
30621269910099,1cyclictest556-21snmpd09:00:043
30621269910099,1cyclictest556-21snmpd08:20:223
30621269910098,2cyclictest556-21snmpd12:24:053
30621269910098,2cyclictest556-21snmpd12:04:073
30621269910098,2cyclictest556-21snmpd10:41:093
30621269910098,2cyclictest556-21snmpd09:12:123
30621219910099,1cyclictest556-21snmpd11:28:202
30621219910099,1cyclictest556-21snmpd10:51:342
30621219910099,1cyclictest556-21snmpd09:22:152
30621219910098,2cyclictest556-21snmpd11:42:252
3062121991000,99cyclictest0-21swapper/210:21:372
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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