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2026-04-27 - 14:05

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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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 Apr 27, 2026 00:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31961992128108,15sleep10-21swapper/119:08:381
31959782117103,9sleep50-21swapper/519:05:295
3196144211398,10sleep20-21swapper/219:07:512
3196109211393,10sleep30-21swapper/319:07:203
3196249211298,9sleep40-21swapper/419:09:214
3196180211298,9sleep00-21swapper/019:08:210
3196214210894,9sleep70-21swapper/719:08:517
3196148210793,9sleep60-21swapper/619:07:556
3196526991030,100cyclictest0-21swapper/200:08:122
31965269910299,3cyclictest553-21snmpd23:20:172
3196526991020,99cyclictest0-21swapper/223:27:112
31965189910299,3cyclictest553-21snmpd23:29:320
319651899102100,2cyclictest553-21snmpd21:31:070
3196545991010,0cyclictest0-21swapper/721:42:177
3196545991010,0cyclictest0-21swapper/721:42:177
31965439910199,1cyclictest605-21lldpd21:43:326
31965439910199,1cyclictest605-21lldpd21:43:326
31965439910199,1cyclictest553-21snmpd20:19:116
31965439910198,3cyclictest553-21snmpd22:51:216
3196543991010,101cyclictest0-21swapper/620:48:476
3196543991010,0cyclictest0-21swapper/622:19:426
3196543991010,0cyclictest0-21swapper/619:40:466
31965349910199,2cyclictest553-21snmpd21:12:494
31965349910199,2cyclictest553-21snmpd20:00:404
3196534991010,100cyclictest3258489-21diskmemload21:57:414
3196534991010,100cyclictest0-21swapper/421:39:474
3196534991010,100cyclictest0-21swapper/421:39:464
3196534991010,100cyclictest0-21swapper/400:33:004
3196534991010,100cyclictest0-21swapper/400:16:524
3196534991010,100cyclictest0-21swapper/400:10:064
31965309910199,2cyclictest553-21snmpd22:21:213
31965309910199,1cyclictest553-21snmpd21:10:223
31965269910199,2cyclictest553-21snmpd21:53:202
3196526991010,98cyclictest0-21swapper/222:33:422
31965229910199,2cyclictest553-21snmpd23:59:031
31965229910199,2cyclictest553-21snmpd21:50:261
31965229910199,2cyclictest553-21snmpd21:37:191
31965229910199,2cyclictest553-21snmpd21:37:191
31965229910199,2cyclictest553-21snmpd21:32:551
31965229910199,2cyclictest553-21snmpd20:35:551
31965229910199,2cyclictest553-21snmpd00:30:251
31965229910199,2cyclictest3489432-21cat00:35:161
31965229910199,2cyclictest0-21swapper/122:02:081
31965229910199,1cyclictest553-21snmpd23:29:381
319652299101100,1cyclictest0-21swapper/119:59:221
3196522991010,99cyclictest0-21swapper/119:23:481
3196522991010,1cyclictest0-21swapper/121:08:401
3196522991010,100cyclictest0-21swapper/121:13:071
3196522991010,0cyclictest0-21swapper/123:13:381
31965189910199,2cyclictest553-21snmpd23:03:360
31965189910199,2cyclictest553-21snmpd19:36:500
31965189910199,2cyclictest553-21snmpd19:25:270
3196518991010,101cyclictest0-21swapper/021:56:110
3196518991010,101cyclictest0-21swapper/021:45:050
3196518991010,101cyclictest0-21swapper/020:11:050
3196518991010,101cyclictest0-21swapper/019:32:240
3196545991000,99cyclictest0-21swapper/723:35:267
3196545991000,99cyclictest0-21swapper/723:33:177
3196545991000,99cyclictest0-21swapper/723:21:377
3196545991000,99cyclictest0-21swapper/722:26:027
3196545991000,99cyclictest0-21swapper/719:48:257
3196545991000,99cyclictest0-21swapper/700:14:127
3196545991000,100cyclictest0-21swapper/721:55:557
3196545991000,100cyclictest0-21swapper/720:24:567
3196545991000,100cyclictest0-21swapper/720:13:447
3196545991000,100cyclictest0-21swapper/700:15:147
31965439910099,1cyclictest553-21snmpd22:34:576
31965439910099,1cyclictest553-21snmpd22:27:576
31965439910099,1cyclictest553-21snmpd20:53:216
31965439910099,1cyclictest553-21snmpd00:02:066
31965439910099,1cyclictest0-21swapper/619:31:276
31965439910099,0cyclictest553-21snmpd20:21:406
3196543991000,100cyclictest0-21swapper/623:35:146
3196543991000,100cyclictest0-21swapper/623:09:016
3196543991000,100cyclictest0-21swapper/620:39:006
31965389910099,1cyclictest553-21snmpd19:55:405
31965389910099,1cyclictest553-21snmpd19:38:305
31965389910099,1cyclictest553-21snmpd19:12:485
31965389910099,1cyclictest3405474-21cat23:20:175
31965389910098,2cyclictest553-21snmpd23:54:305
3196538991000,99cyclictest0-21swapper/523:25:475
3196538991000,99cyclictest0-21swapper/521:25:405
3196538991000,99cyclictest0-21swapper/521:04:215
3196538991000,99cyclictest0-21swapper/520:18:415
3196538991000,99cyclictest0-21swapper/500:17:375
3196538991000,100cyclictest0-21swapper/523:36:115
3196538991000,100cyclictest0-21swapper/522:35:095
3196538991000,100cyclictest0-21swapper/520:35:505
31965349910099,1cyclictest553-21snmpd23:11:064
31965349910099,1cyclictest553-21snmpd22:24:154
31965349910099,1cyclictest553-21snmpd20:15:194
31965349910099,1cyclictest553-21snmpd19:11:274
31965349910099,1cyclictest3200771-21cat19:15:154
31965349910098,2cyclictest553-21snmpd23:53:034
31965349910098,2cyclictest553-21snmpd23:09:494
3196534991000,99cyclictest0-21swapper/421:30:304
3196534991000,99cyclictest0-21swapper/420:56:574
3196534991000,99cyclictest0-21swapper/419:59:284
3196534991000,100cyclictest0-21swapper/423:29:414
3196534991000,100cyclictest0-21swapper/423:02:254
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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