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2026-04-24 - 09:10

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 Apr 24, 2026 00:45:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14331852382323,50sleep80-21swapper/819:06:4414
14332172369346,6sleep00-21swapper/019:07:090
14331072364323,14sleep120-21swapper/1219:05:454
14332402358316,14sleep150-21swapper/1519:07:247
14331952356336,13sleep10-21swapper/119:06:541
14334382354334,13sleep100-21swapper/1019:09:442
14332042354334,13sleep70-21swapper/719:07:0113
14333522353347,4sleep110-21swapper/1119:08:573
14333652351331,13sleep50-21swapper/519:09:0711
14333602351331,13sleep20-21swapper/219:09:038
14332262351331,13sleep30-21swapper/319:07:129
14332022351331,13sleep60-21swapper/619:07:0012
14331912351330,14sleep140-21swapper/1419:06:516
14331082350330,13sleep130-21swapper/1319:05:465
14332062347327,13sleep90-21swapper/919:07:0215
14334012345324,14sleep40-21swapper/419:09:2110
14490312580,0sleep100-21swapper/1019:25:132
143394699426,23cyclictest0-21swapper/1421:24:566
143394699339,11cyclictest0-21swapper/1423:25:456
143394699339,11cyclictest0-21swapper/1421:35:566
143394699328,11cyclictest0-21swapper/1422:52:486
143394699328,11cyclictest0-21swapper/1419:57:056
143394699328,11cyclictest0-21swapper/1419:57:056
143394699328,11cyclictest0-21swapper/1419:46:066
143394699328,11cyclictest0-21swapper/1419:46:056
143392299320,29cyclictest0-21swapper/700:30:1513
143391699320,1cyclictest0-21swapper/520:10:2411
143394699317,13cyclictest0-21swapper/1400:20:406
143394199310,30cyclictest0-21swapper/1322:00:085
143394199310,30cyclictest0-21swapper/1321:38:505
143394199310,30cyclictest0-21swapper/1320:55:375
143394199310,30cyclictest0-21swapper/1300:24:575
1433935993130,1cyclictest1774-21snmpd00:01:263
1433932993130,1cyclictest1625466-21kworker/10:0+events22:53:532
1433932993129,1cyclictest1598331-21kworker/10:1+events22:06:462
1433930993130,1cyclictest0-21swapper/900:11:0915
143393099310,30cyclictest0-21swapper/923:59:0015
143393099310,30cyclictest0-21swapper/920:02:2615
143393099310,28cyclictest0-21swapper/919:35:1515
143392299310,30cyclictest0-21swapper/723:43:2313
143392299310,30cyclictest0-21swapper/723:30:1513
1433920993130,1cyclictest1774-21snmpd00:26:4712
1433920993130,1cyclictest0-21swapper/623:41:1112
143392099310,30cyclictest0-21swapper/621:38:3112
1433916993127,4cyclictest1796323-21mii-tool00:30:1611
143391699310,30cyclictest1778650-21ssh00:15:3811
143391699310,30cyclictest0-21swapper/520:15:0811
1433909993130,1cyclictest0-21swapper/200:18:338
143390999310,30cyclictest0-21swapper/222:54:258
143390499310,30cyclictest0-21swapper/123:00:311
143390499310,30cyclictest0-21swapper/123:00:311
143390499310,30cyclictest0-21swapper/120:25:161
143390499310,30cyclictest0-21swapper/120:20:381
1433901993131,0cyclictest0-21swapper/023:35:180
1433901993129,1cyclictest1670188-21ssh22:53:130
143395099300,30cyclictest0-21swapper/1500:26:337
143395099300,29cyclictest0-21swapper/1523:56:237
143395099300,1cyclictest0-21swapper/1523:50:137
143394699306,11cyclictest0-21swapper/1421:02:586
1433946993030,0cyclictest1774-21snmpd22:41:366
1433941993029,1cyclictest1774-21snmpd20:08:075
143394199300,30cyclictest0-21swapper/1323:17:365
143394199300,30cyclictest0-21swapper/1323:13:245
1433937993029,1cyclictest1774-21snmpd22:40:154
1433937993029,1cyclictest1774-21snmpd21:16:364
1433937993027,3cyclictest1774-21snmpd20:31:364
143393799300,29cyclictest0-21swapper/1200:29:574
143393599300,30cyclictest0-21swapper/1121:48:233
143393599300,29cyclictest0-21swapper/1122:50:133
1433932993030,0cyclictest1625466-21kworker/10:0+events23:16:182
1433932993030,0cyclictest1625466-21kworker/10:0+events23:13:402
1433932993030,0cyclictest1625466-21kworker/10:0+events22:40:072
1433932993030,0cyclictest1625466-21kworker/10:0+events22:36:132
1433932993030,0cyclictest1525409-21kworker/10:2+events21:05:032
1433932993030,0cyclictest1525409-21kworker/10:2+events20:57:552
1433932993030,0cyclictest1479221-21kworker/10:1+events20:53:392
1433932993030,0cyclictest1479221-21kworker/10:1+events20:47:382
1433932993030,0cyclictest1479221-21kworker/10:1+events20:40:562
1433932993030,0cyclictest1479221-21kworker/10:1+events20:36:352
1433932993030,0cyclictest1479221-21kworker/10:1+events20:30:392
1433932993030,0cyclictest1479221-21kworker/10:1+events20:16:012
1433932993030,0cyclictest1479221-21kworker/10:1+events20:14:272
1433932993030,0cyclictest1479221-21kworker/10:1+events20:09:312
1433932993030,0cyclictest1479221-21kworker/10:1+events20:00:472
1433932993030,0cyclictest1245168-21kworker/10:0+events19:55:292
1433932993030,0cyclictest1245168-21kworker/10:0+events19:55:292
1433932993030,0cyclictest1245168-21kworker/10:0+events19:51:562
1433932993030,0cyclictest1245168-21kworker/10:0+events19:51:552
1433932993030,0cyclictest1245168-21kworker/10:0+events19:46:532
1433932993030,0cyclictest1245168-21kworker/10:0+events19:46:532
1433932993030,0cyclictest1245168-21kworker/10:0+events19:40:402
1433932993030,0cyclictest1245168-21kworker/10:0+events19:35:042
1433932993030,0cyclictest1245168-21kworker/10:0+events19:30:392
1433932993030,0cyclictest1245168-21kworker/10:0+events19:22:022
1433932993030,0cyclictest1245168-21kworker/10:0+events19:18:272
1433932993030,0cyclictest1245168-21kworker/10:0+events19:11:532
1433932993029,1cyclictest1774-21snmpd23:25:562
1433932993029,1cyclictest1709161-21kworker/10:2+events23:43:002
1433932993029,1cyclictest1709161-21kworker/10:2+events23:37:162
1433932993029,1cyclictest1709161-21kworker/10:2+events23:32:532
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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