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2026-04-11 - 04:22

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 Sat Apr 11, 2026 00:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1917172373355,12sleep90-21swapper/919:09:2415
1915192369327,13sleep110-21swapper/1119:07:173
1914222359350,6sleep70-21swapper/719:06:0913
1916132354335,12sleep140-21swapper/1419:08:266
1916122354334,13sleep130-21swapper/1319:08:245
1917402353342,7sleep80-21swapper/819:09:3914
1913942352333,12sleep10-21swapper/119:05:471
1915672351331,13sleep20-21swapper/219:07:568
1916872349338,7sleep100-21swapper/1019:09:092
1915042349330,12sleep30-21swapper/319:07:099
1916772348328,13sleep50-21swapper/519:09:0411
1915332348326,14sleep40-21swapper/419:07:2610
1915632346323,15sleep150-21swapper/1519:07:537
1915072346327,12sleep60-21swapper/619:07:1212
1914092344324,13sleep120-21swapper/1219:05:584
1915882343321,14sleep00-21swapper/019:08:110
192218993939,0cyclictest0-21swapper/623:11:2012
192218993838,0cyclictest0-21swapper/623:58:3312
19221899382,29cyclictest0-21swapper/621:55:0612
19222399370,37cyclictest262658-21kworker/8:1-mm_percpu_wq21:03:5314
192223993535,0cyclictest0-21swapper/822:01:4814
192223993535,0cyclictest0-21swapper/800:39:0314
192218993535,0cyclictest0-21swapper/622:20:4112
192218993535,0cyclictest0-21swapper/600:03:4412
192218993433,0cyclictest0-21swapper/621:03:5312
19224299339,10cyclictest0-21swapper/1422:35:126
192239993332,1cyclictest527633-21kworker/13:1-events00:11:095
192223993333,0cyclictest0-21swapper/822:22:0314
192223993333,0cyclictest0-21swapper/819:16:3214
19224299328,11cyclictest0-21swapper/1422:57:106
19224299328,11cyclictest0-21swapper/1422:13:146
19224299328,11cyclictest0-21swapper/1420:34:246
19224299328,11cyclictest0-21swapper/1419:28:296
19224299328,11cyclictest0-21swapper/1419:17:306
192239993232,0cyclictest0-21swapper/1321:55:505
192223993232,0cyclictest0-21swapper/820:58:5714
192223993232,0cyclictest0-21swapper/820:17:4114
192223993232,0cyclictest0-21swapper/819:22:3514
192218993232,0cyclictest0-21swapper/619:15:1512
192218993232,0cyclictest0-21swapper/600:23:4512
19220699320,29cyclictest405050-21ssh22:35:018
19220699320,29cyclictest307371-21ssh21:20:098
19220699320,29cyclictest0-21swapper/223:46:278
19220699320,29cyclictest0-21swapper/223:24:568
19220699320,29cyclictest0-21swapper/223:13:258
19220699320,29cyclictest0-21swapper/222:34:478
19220699320,29cyclictest0-21swapper/221:55:038
19220699320,29cyclictest0-21swapper/221:49:178
19220699320,29cyclictest0-21swapper/221:49:178
19220699320,29cyclictest0-21swapper/221:39:088
19220699320,29cyclictest0-21swapper/221:39:078
19220699320,29cyclictest0-21swapper/221:11:478
19220699320,29cyclictest0-21swapper/221:01:088
19220699320,29cyclictest0-21swapper/220:40:258
19220699320,29cyclictest0-21swapper/220:14:298
19220699320,29cyclictest0-21swapper/200:19:378
19220699320,1cyclictest0-21swapper/221:31:048
192244993130,1cyclictest1774-21snmpd22:24:507
192239993131,0cyclictest0-21swapper/1323:46:145
192239993131,0cyclictest0-21swapper/1323:11:205
192239993130,1cyclictest322397-21nodev-device-ev21:30:195
19223799310,30cyclictest0-21swapper/1200:09:284
192230993130,1cyclictest1774-21snmpd22:37:102
19223099310,30cyclictest0-21swapper/1021:06:212
19222799310,30cyclictest0-21swapper/919:30:1315
192223993131,0cyclictest0-21swapper/800:26:4314
192221993130,1cyclictest1774-21snmpd00:28:3013
19222199310,30cyclictest0-21swapper/723:50:4213
192218993131,0cyclictest0-21swapper/622:10:2712
192218993131,0cyclictest0-21swapper/619:54:4512
192218993130,1cyclictest0-21swapper/623:19:4912
19221899311,30cyclictest781ktimers/621:25:1312
19221899310,31cyclictest0-21swapper/600:14:0812
19221699312,26cyclictest0-21swapper/500:10:1511
19221699310,30cyclictest0-21swapper/522:44:2111
19221199310,30cyclictest0-21swapper/419:15:1510
19220899310,1cyclictest0-21swapper/320:58:429
192206993130,1cyclictest1774-21snmpd20:39:148
192206993128,3cyclictest262340-21ethtool20:30:158
192206993128,3cyclictest1774-21snmpd23:43:128
192206993126,3cyclictest0-21swapper/200:06:298
19220699310,30cyclictest0-21swapper/221:41:538
19220699310,30cyclictest0-21swapper/221:41:538
19220699310,30cyclictest0-21swapper/219:15:058
19220699310,28cyclictest0-21swapper/223:04:048
19220699310,28cyclictest0-21swapper/222:57:368
19220699310,28cyclictest0-21swapper/222:50:088
19220699310,28cyclictest0-21swapper/222:25:128
19220699310,28cyclictest0-21swapper/222:21:338
19220699310,28cyclictest0-21swapper/222:15:468
19220699310,28cyclictest0-21swapper/222:14:218
19220699310,28cyclictest0-21swapper/221:17:438
19220699310,28cyclictest0-21swapper/220:15:218
19220699310,28cyclictest0-21swapper/219:50:218
19220699310,28cyclictest0-21swapper/219:36:218
19220699310,28cyclictest0-21swapper/200:35:118
192202993130,1cyclictest1774-21snmpd19:32:131
19220299310,30cyclictest0-21swapper/122:31:021
192200993128,3cyclictest1774-21snmpd22:13:050
19220099310,30cyclictest0-21swapper/019:34:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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