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2025-07-04 - 12:19

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #4

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 here to display the system's profile data or here to proceed to next system.
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 rack0slot4s.osadl.org (updated Fri Jul 04, 2025 00:46:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5841542365322,34sleep20-21swapper/219:09:368
5838702360321,15sleep120-21swapper/1219:05:454
5839822355332,14sleep80-21swapper/819:07:1714
5841572353331,14sleep50-21swapper/519:09:3811
5838682353344,6sleep100-21swapper/1019:05:432
5841332351328,15sleep00-21swapper/019:09:170
5841782350325,15sleep70-21swapper/719:09:5713
5841492350326,15sleep140-21swapper/1419:09:316
5840282350326,15sleep130-21swapper/1319:07:555
5839282350328,14sleep110-21swapper/1119:06:323
5841582348324,15sleep60-21swapper/619:09:3912
5840942348326,14sleep30-21swapper/319:08:499
5839072347326,14sleep90-21swapper/919:06:1415
5840752345323,14sleep10-21swapper/119:08:301
5807132345323,14sleep40-21swapper/419:05:0510
5838732344323,14sleep150-21swapper/1519:05:477
584635994744,2cyclictest688728-21kworker/u32:3+flush-259:020:30:408
58467799459,25cyclictest0-21swapper/1420:04:466
58463999410,32cyclictest0-21swapper/323:01:279
584670993922,3cyclictest211rcu_preempt23:01:284
584642993939,0cyclictest0-21swapper/400:30:1710
584677993410,11cyclictest0-21swapper/1423:44:266
584667993427,4cyclictest0-21swapper/1123:48:403
584679993329,4cyclictest1813-21snmpd21:31:587
58466299330,30cyclictest0-21swapper/919:38:0215
584657993330,3cyclictest1813-21snmpd21:52:0014
584657993329,3cyclictest1813-21snmpd19:33:5714
584642993330,3cyclictest1813-21snmpd20:31:4710
584679993227,1cyclictest1813-21snmpd22:06:347
584670993232,0cyclictest0-21swapper/1223:48:404
584662993229,3cyclictest1813-21snmpd22:54:2715
58465799320,32cyclictest0-21swapper/819:35:1614
584648993227,5cyclictest1813-21snmpd22:16:5612
584642993229,3cyclictest1813-21snmpd22:20:5010
58467799310,30cyclictest0-21swapper/1422:36:446
584667993131,0cyclictest0-21swapper/1123:14:023
584667993131,0cyclictest0-21swapper/1123:14:023
584667993131,0cyclictest0-21swapper/1120:40:183
58466299310,30cyclictest0-21swapper/921:30:1615
584657993130,1cyclictest1813-21snmpd21:03:3514
58465799310,30cyclictest0-21swapper/823:55:3114
584653993130,1cyclictest1813-21snmpd19:35:4213
584648993128,3cyclictest1813-21snmpd23:03:4712
58464899310,30cyclictest0-21swapper/621:40:3412
58464499310,30cyclictest0-21swapper/519:15:1511
584642993130,1cyclictest785129-21nodev-device-ev21:35:2010
584642993129,1cyclictest1813-21snmpd00:14:5310
584642993128,3cyclictest684238-21mii-tool20:20:1610
58464299310,29cyclictest0-21swapper/419:37:5310
58463999310,30cyclictest0-21swapper/321:36:279
58463599310,28cyclictest0-21swapper/220:40:168
584679993029,1cyclictest1813-21snmpd22:43:507
584679993029,1cyclictest1813-21snmpd19:28:277
584679993029,1cyclictest1813-21snmpd00:20:567
584679993026,1cyclictest1813-21snmpd20:43:147
58467799300,30cyclictest0-21swapper/1400:03:036
58467799300,29cyclictest0-21swapper/1421:53:586
58467799300,27cyclictest0-21swapper/1420:30:176
584673993029,1cyclictest1813-21snmpd21:37:465
584673993029,1cyclictest1813-21snmpd20:21:225
584667993030,0cyclictest0-21swapper/1122:13:083
584667993030,0cyclictest0-21swapper/1120:01:333
584667993030,0cyclictest0-21swapper/1100:31:243
584667993029,1cyclictest717821-21nodev-device-ev21:00:223
584667993029,1cyclictest1813-21snmpd23:59:463
584667993029,1cyclictest1813-21snmpd19:32:243
584664993029,1cyclictest1813-21snmpd22:10:322
584664993029,1cyclictest1813-21snmpd20:17:072
584664993029,1cyclictest1813-21snmpd20:17:072
58466499300,30cyclictest0-21swapper/1023:59:492
58466499300,1cyclictest0-21swapper/1021:57:432
58466499300,1cyclictest0-21swapper/1020:53:562
584662993029,1cyclictest1813-21snmpd22:08:2315
584662993027,3cyclictest1813-21snmpd21:07:1215
58466299300,29cyclictest0-21swapper/919:53:0215
58466299300,1cyclictest0-21swapper/923:12:3915
58466299300,1cyclictest0-21swapper/923:12:3915
58466299300,1cyclictest0-21swapper/922:40:2215
58465799300,29cyclictest0-21swapper/823:05:4514
58465799300,29cyclictest0-21swapper/819:15:3214
584653993029,1cyclictest776501-21ethtool21:25:1413
584653993029,1cyclictest1813-21snmpd21:54:4913
584648993029,1cyclictest1813-21snmpd21:55:4612
584648993027,3cyclictest1813-21snmpd00:36:1112
584644993029,1cyclictest940288-21mii-tool23:10:1511
584644993029,1cyclictest940288-21mii-tool23:10:1511
584644993029,1cyclictest1813-21snmpd00:26:1911
58464499300,30cyclictest0-21swapper/522:30:4911
584642993029,1cyclictest1813-21snmpd23:44:5510
58464299300,1cyclictest0-21swapper/419:49:5910
58463999300,29cyclictest0-21swapper/323:12:399
58463999300,29cyclictest0-21swapper/323:12:399
58463999300,28cyclictest0-21swapper/320:30:139
584635993029,1cyclictest1813-21snmpd20:04:198
584635993029,1cyclictest1813-21snmpd00:22:478
58463599300,1cyclictest0-21swapper/223:41:048
584632993029,1cyclictest1813-21snmpd22:39:411
584632993029,1cyclictest1813-21snmpd20:23:581
58463299300,1cyclictest0-21swapper/100:07:251
584629993029,1cyclictest1813-21snmpd22:39:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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