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2026-06-06 - 04:39

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 Sat Jun 06, 2026 00:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10303332121107,9sleep50-21swapper/519:06:005
10305172118104,9sleep20-21swapper/219:08:382
1030584211399,9sleep40-21swapper/419:09:364
1030475211399,9sleep70-21swapper/719:08:047
1030322211398,10sleep30-21swapper/319:05:503
1030361211297,10sleep60-21swapper/619:06:256
1030320211096,9sleep10-21swapper/119:05:481
1030504210893,10sleep00-21swapper/019:08:280
1030854991030,101cyclictest0-21swapper/223:09:512
10308679910299,3cyclictest553-21snmpd22:30:475
1030875991010,99cyclictest0-21swapper/719:48:487
1030875991010,101cyclictest0-21swapper/720:51:297
1030875991010,101cyclictest0-21swapper/720:51:297
1030875991010,100cyclictest0-21swapper/723:42:027
1030875991010,100cyclictest0-21swapper/722:40:357
1030875991010,100cyclictest0-21swapper/722:13:587
1030875991010,100cyclictest0-21swapper/721:39:067
1030875991010,0cyclictest0-21swapper/719:20:237
1030871991010,99cyclictest0-21swapper/621:12:486
1030871991010,100cyclictest0-21swapper/623:03:276
1030871991010,100cyclictest0-21swapper/621:50:146
10308679910199,2cyclictest553-21snmpd23:14:285
10308679910199,2cyclictest553-21snmpd21:20:485
10308679910199,2cyclictest553-21snmpd21:00:145
10308679910199,2cyclictest553-21snmpd00:02:175
10308679910198,3cyclictest553-21snmpd00:22:395
1030867991010,101cyclictest0-21swapper/519:25:445
1030867991010,100cyclictest0-21swapper/520:06:555
1030862991010,100cyclictest0-21swapper/422:13:104
1030862991010,100cyclictest0-21swapper/420:54:384
1030862991010,100cyclictest0-21swapper/420:54:384
1030862991010,100cyclictest0-21swapper/420:30:144
1030862991010,100cyclictest0-21swapper/419:14:414
10308599910199,2cyclictest1880257-21ntpd22:01:233
10308549910198,3cyclictest553-21snmpd22:16:492
1030854991010,0cyclictest0-21swapper/222:51:092
10308509910199,2cyclictest553-21snmpd22:04:041
1030850991010,100cyclictest0-21swapper/122:25:141
1030850991010,100cyclictest0-21swapper/122:10:131
1030850991010,100cyclictest0-21swapper/121:58:011
103084599101100,1cyclictest553-21snmpd23:59:050
10308759910099,1cyclictest0-21swapper/722:48:577
1030875991000,99cyclictest0-21swapper/722:06:537
1030875991000,99cyclictest0-21swapper/719:18:417
1030875991000,100cyclictest0-21swapper/723:53:157
1030875991000,100cyclictest0-21swapper/723:26:047
1030875991000,100cyclictest0-21swapper/722:55:127
1030875991000,100cyclictest0-21swapper/722:28:117
1030875991000,100cyclictest0-21swapper/722:22:177
1030875991000,100cyclictest0-21swapper/720:20:377
1030875991000,100cyclictest0-21swapper/720:05:527
10308719910099,1cyclictest553-21snmpd23:50:236
10308719910099,1cyclictest553-21snmpd23:26:436
10308719910099,1cyclictest553-21snmpd22:51:276
10308719910099,1cyclictest553-21snmpd21:29:246
10308719910099,1cyclictest553-21snmpd19:24:506
10308719910099,1cyclictest553-21snmpd00:13:336
1030871991000,99cyclictest0-21swapper/620:49:246
1030871991000,99cyclictest0-21swapper/620:49:236
10308679910099,1cyclictest553-21snmpd22:26:455
10308679910099,1cyclictest553-21snmpd20:02:095
10308679910099,1cyclictest553-21snmpd00:28:095
10308679910098,2cyclictest553-21snmpd23:42:295
10308679910098,2cyclictest553-21snmpd23:08:335
10308679910096,3cyclictest1294190-21cat00:10:155
1030867991000,99cyclictest0-21swapper/522:46:155
1030867991000,99cyclictest0-21swapper/521:27:005
1030867991000,100cyclictest0-21swapper/523:00:125
1030867991000,100cyclictest0-21swapper/521:44:335
1030867991000,100cyclictest0-21swapper/520:14:165
1030867991000,100cyclictest0-21swapper/519:16:235
10308629910099,1cyclictest553-21snmpd22:51:044
10308629910099,1cyclictest553-21snmpd21:56:044
10308629910099,1cyclictest553-21snmpd20:21:354
10308629910099,1cyclictest553-21snmpd20:03:154
10308629910099,1cyclictest553-21snmpd00:12:064
10308629910099,1cyclictest1178161-21cat22:25:144
1030862991000,99cyclictest0-21swapper/420:25:144
1030862991000,100cyclictest0-21swapper/423:21:164
1030862991000,100cyclictest0-21swapper/421:27:394
1030862991000,100cyclictest0-21swapper/420:35:044
10308599910099,1cyclictest553-21snmpd23:27:193
10308599910099,1cyclictest553-21snmpd21:21:393
10308599910099,1cyclictest553-21snmpd21:19:483
10308599910099,1cyclictest553-21snmpd20:21:133
10308599910099,1cyclictest553-21snmpd20:01:243
10308599910099,1cyclictest553-21snmpd00:05:543
10308599910098,2cyclictest553-21snmpd23:24:493
10308599910098,2cyclictest553-21snmpd22:57:573
10308549910099,1cyclictest553-21snmpd21:10:092
10308549910099,1cyclictest0-21swapper/222:00:072
1030854991000,99cyclictest0-21swapper/221:04:112
1030854991000,100cyclictest0-21swapper/223:46:322
1030854991000,100cyclictest0-21swapper/223:28:522
1030854991000,100cyclictest0-21swapper/221:56:232
1030854991000,100cyclictest0-21swapper/220:43:512
1030854991000,100cyclictest0-21swapper/219:42:572
1030854991000,100cyclictest0-21swapper/219:25:152
1030854991000,100cyclictest0-21swapper/200:35:142
1030854991000,100cyclictest0-21swapper/200:11:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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