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2026-03-07 - 05:00

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 Mar 07, 2026 00:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11819822384378,4sleep60-21swapper/619:07:0912
11821752366359,5sleep120-21swapper/1219:09:394
11820062366348,11sleep40-21swapper/419:07:2310
11819962366346,13sleep140-21swapper/1419:07:176
11818962358338,13sleep10-21swapper/119:06:001
11818932354334,13sleep150-21swapper/1519:05:577
11820912353332,14sleep90-21swapper/919:08:3215
11819612352335,11sleep30-21swapper/319:06:509
11821522350330,13sleep70-21swapper/719:09:1913
11820742350330,13sleep100-21swapper/1019:08:172
11820902349327,14sleep80-21swapper/819:08:3114
11818912349330,13sleep130-21swapper/1319:05:555
11821492348328,13sleep50-21swapper/519:09:1711
11820752348330,12sleep110-21swapper/1119:08:183
11820842347326,14sleep20-21swapper/219:08:258
11787282345325,13sleep00-21swapper/019:05:100
129829221160,0sleep10115-21ksoftirqd/1021:20:122
11826129911659,28cyclictest0-21swapper/1320:21:595
1182593998829,59cyclictest0-21swapper/720:21:5913
1182583998325,29cyclictest0-21swapper/420:21:5910
1182577998022,29cyclictest0-21swapper/220:21:598
1182617997341,32cyclictest0-21swapper/1520:21:597
1182602997013,29cyclictest0-21swapper/1020:22:002
13615882640,0sleep131401rcuc/1322:09:415
1182586995412,42cyclictest0-21swapper/520:22:0011
1182607994544,1cyclictest3318-21Xorg20:21:594
1182596993938,1cyclictest3318-21Xorg20:22:0014
118257199390,39cyclictest0-21swapper/020:22:000
1182575993737,0cyclictest0-21swapper/120:05:301
1182593993430,4cyclictest1769-21arpwatch21:56:5013
118257599330,1cyclictest0-21swapper/122:34:071
118261799320,29cyclictest0-21swapper/1500:30:147
1182617993130,1cyclictest1774-21snmpd20:25:077
118261299310,30cyclictest0-21swapper/1321:21:595
118261299310,30cyclictest0-21swapper/1321:19:055
1182602993130,1cyclictest1181883-21kworker/10:0+events21:11:312
1182602993129,1cyclictest1450737-21kworker/10:1+events23:53:002
118260299310,30cyclictest0-21swapper/1022:22:492
118260299310,29cyclictest0-21swapper/1023:30:142
1182598993129,1cyclictest1774-21snmpd23:42:2415
118259899310,30cyclictest0-21swapper/920:47:1315
118259899310,30cyclictest0-21swapper/920:47:1315
118259699310,30cyclictest0-21swapper/819:45:5914
1182593993131,0cyclictest0-21swapper/723:40:2113
1182591993130,1cyclictest1774-21snmpd23:45:4812
1182583993130,1cyclictest1774-21snmpd00:05:4310
1182583993110,20cyclictest617411-21thunderbird23:49:5110
118258199310,30cyclictest0-21swapper/323:56:149
118258199310,30cyclictest0-21swapper/323:56:139
118258199310,30cyclictest0-21swapper/322:53:209
118257799310,30cyclictest0-21swapper/223:07:238
1182575993129,2cyclictest0-21swapper/123:13:061
1182571993130,1cyclictest0-21swapper/019:56:090
118257199310,30cyclictest0-21swapper/023:29:510
118257199310,30cyclictest0-21swapper/000:31:130
1182617993029,1cyclictest1377147-21mii-tool22:20:167
118261799300,29cyclictest0-21swapper/1522:47:597
1182614993029,1cyclictest0-21swapper/1422:49:086
1182614993029,1cyclictest0-21swapper/1421:04:506
1182612993029,1cyclictest1774-21snmpd21:47:365
1182612993029,1cyclictest1277995-21ethtool21:00:155
1182607993029,1cyclictest1774-21snmpd21:17:474
1182607993029,1cyclictest0-21swapper/1219:23:354
118260799300,30cyclictest0-21swapper/1220:37:104
118260799300,30cyclictest0-21swapper/1219:42:274
118260799300,1cyclictest0-21swapper/1222:16:524
1182604993029,1cyclictest1774-21snmpd23:56:133
1182604993029,1cyclictest1774-21snmpd23:56:133
1182602993030,0cyclictest1521421-21kworker/10:0+events00:25:232
1182602993030,0cyclictest1521421-21kworker/10:0+events00:18:052
1182602993030,0cyclictest1379488-21kworker/10:0+events23:07:112
1182602993030,0cyclictest1296719-21kworker/10:0+events21:43:372
1182602993030,0cyclictest1289635-21kworker/10:1+events21:15:192
1182602993030,0cyclictest1181883-21kworker/10:0+events19:40:132
1182602993029,1cyclictest1521421-21kworker/10:0+events00:20:032
1182602993029,1cyclictest1450737-21kworker/10:1+events23:45:032
1182602993029,1cyclictest1450737-21kworker/10:1+events23:25:232
1182602993029,1cyclictest1450737-21kworker/10:1+events00:10:232
1182602993029,1cyclictest1379488-21kworker/10:0+events22:59:212
1182602993029,1cyclictest1379488-21kworker/10:0+events22:42:292
1182602993029,1cyclictest1379488-21kworker/10:0+events22:32:472
1182602993029,1cyclictest1353500-21kworker/10:2+events22:18:312
1182602993029,1cyclictest1296719-21kworker/10:0+events22:00:192
1182602993029,1cyclictest1296719-21kworker/10:0+events21:34:052
1182602993029,1cyclictest1296719-21kworker/10:0+events21:28:132
1182602993029,1cyclictest0-21swapper/1023:20:582
1182602993028,1cyclictest1379488-21kworker/10:0+events23:17:552
1182598993029,1cyclictest1774-21snmpd21:00:2615
1182598993029,1cyclictest1526084-21mii-tool00:15:1715
118259899300,29cyclictest0-21swapper/921:44:4815
118259699300,30cyclictest0-21swapper/823:26:4814
118259699300,30cyclictest0-21swapper/821:13:5614
1182593993030,0cyclictest0-21swapper/723:19:5713
1182593993030,0cyclictest0-21swapper/722:57:1313
1182593993030,0cyclictest0-21swapper/722:38:4513
1182593993030,0cyclictest0-21swapper/721:54:2213
1182593993029,1cyclictest1774-21snmpd23:33:4513
1182593993029,1cyclictest1774-21snmpd00:33:0213
118259399300,30cyclictest1309288-21ssh21:28:4213
118259399300,30cyclictest0-21swapper/721:36:0913
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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