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2026-07-21 - 12:04

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #7

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 rackcslot7s.osadl.org (updated Tue Jul 21, 2026 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
334066523180,19sleep20-21swapper/219:05:242
342663521050,4sleep03056-21PK-Backend23:06:150
334762321050,3sleep20-21swapper/219:25:152
341291221020,4sleep30-21swapper/322:30:013
139099870,73rtkit-daemon0-21swapper/019:08:280
334065627447,16sleep10-21swapper/119:05:251
334129426840,9sleep30-21swapper/319:09:123
34339712560,4sleep30-21swapper/323:25:233
334150099406,19cyclictest0-21swapper/222:33:532
334150099396,19cyclictest0-21swapper/200:21:322
334150099391,21cyclictest0-21swapper/221:45:002
334150099380,27cyclictest3395162-21chrt21:39:312
334150099380,25cyclictest3457121-21chrt00:32:582
334150099376,18cyclictest0-21swapper/223:11:582
334150099376,18cyclictest0-21swapper/220:46:062
334150099372,21cyclictest0-21swapper/222:42:192
334150099372,21cyclictest0-21swapper/222:42:192
334150099371,22cyclictest0-21swapper/219:44:312
334150099371,21cyclictest0-21swapper/221:01:502
334150099363,20cyclictest0-21swapper/220:11:062
334150099362,20cyclictest0-21swapper/223:31:312
334150099362,20cyclictest0-21swapper/222:07:542
334150099362,20cyclictest0-21swapper/220:24:342
334150099361,22cyclictest0-21swapper/223:46:192
334150099361,21cyclictest0-21swapper/223:15:472
334150099361,21cyclictest0-21swapper/221:49:182
334150099361,21cyclictest0-21swapper/221:25:402
334150099361,21cyclictest0-21swapper/220:43:462
334150099361,21cyclictest0-21swapper/219:35:052
334150099361,21cyclictest0-21swapper/219:12:472
334150099361,21cyclictest0-21swapper/200:07:442
334150099360,26cyclictest3350475-21chrt19:33:442
334150099360,21cyclictest0-21swapper/200:27:052
334150099352,20cyclictest0-21swapper/223:41:102
334150099352,20cyclictest0-21swapper/223:41:102
334150099352,20cyclictest0-21swapper/221:19:102
334150099352,20cyclictest0-21swapper/219:54:302
334150099352,19cyclictest0-21swapper/220:02:512
334150099352,19cyclictest0-21swapper/219:59:272
334150099352,19cyclictest0-21swapper/200:01:472
334150099352,18cyclictest0-21swapper/223:21:332
334150099351,20cyclictest0-21swapper/222:15:442
334150099350,20cyclictest3458760-21chrt00:36:472
334150099350,19cyclictest33932732sleep221:32:302
334150099350,19cyclictest0-21swapper/222:01:052
334150099350,19cyclictest0-21swapper/221:07:352
139099350,3rtkit-daemon0-21swapper/000:01:350
334150099342,22cyclictest0-21swapper/222:46:442
334150099342,21cyclictest0-21swapper/221:24:362
334150099342,19cyclictest0-21swapper/223:57:422
334150099342,19cyclictest0-21swapper/219:24:262
334150099342,18cyclictest0-21swapper/220:17:032
334150099340,21cyclictest0-21swapper/223:04:002
334150099340,20cyclictest3450004-21chrt00:14:502
334150099340,19cyclictest0-21swapper/223:25:582
334150099340,19cyclictest0-21swapper/222:27:312
334150099340,19cyclictest0-21swapper/220:07:492
334150099340,19cyclictest0-21swapper/219:18:122
334150099340,18cyclictest0-21swapper/223:05:412
334150099340,18cyclictest0-21swapper/221:59:162
334150099332,19cyclictest0-21swapper/223:52:282
334150099330,22cyclictest3378897-21chrt20:52:402
334150099330,22cyclictest3378897-21chrt20:52:402
334150099330,18cyclictest0-21swapper/219:49:202
334150099330,18cyclictest0-21swapper/219:49:202
334150099330,17cyclictest0-21swapper/222:54:182
334150099322,20cyclictest0-21swapper/222:22:582
334150099320,19cyclictest0-21swapper/220:58:572
334150099310,19cyclictest0-21swapper/222:55:102
334150099300,21cyclictest0-21swapper/220:28:302
334150099300,19cyclictest0-21swapper/221:14:332
334150099300,18cyclictest0-21swapper/222:39:422
334150099300,18cyclictest0-21swapper/222:11:482
334150099300,18cyclictest0-21swapper/220:38:562
334150299281,24cyclictest3455277-21lsb_release00:26:403
139099270,19rtkit-daemon3056-21PK-Backend23:52:221
34056082250,4sleep33405607-21turbostat.cron22:10:003
33533432250,3chrt3056-21PK-Backend19:40:200
334150099251,22cyclictest3450511-21cstates00:15:132
334150099250,24cyclictest0-21swapper/223:39:152
334150099250,23cyclictest3399158-21cstates21:50:142
334149299256,11cyclictest13-21ksoftirqd/020:40:010
334149299253,7cyclictest13-21ksoftirqd/000:18:060
334149299251,22cyclictest3442352-21ntp_states23:50:200
34221792240,13sleep126-21ksoftirqd/122:55:171
3341502992318,3cyclictest3397217-21apt21:45:123
334150099231,20cyclictest3371179-21sshd20:30:152
334149299238,4cyclictest13-21ksoftirqd/020:17:420
334149299235,5cyclictest13-21ksoftirqd/022:21:410
334149299234,7cyclictest13-21ksoftirqd/021:55:140
3341492992314,8cyclictest3385643-21sed21:10:160
139099230,14rtkit-daemon0-21swapper/019:56:280
34221252220,4sleep03056-21PK-Backend22:55:160
3341502992220,1cyclictest0-21swapper/300:10:043
3341502992217,3cyclictest3361419-21grep20:05:143
3341495992220,1cyclictest3056-21PK-Backend20:05:391
3341495992220,1cyclictest3056-21PK-Backend19:12:531
3341495992220,1cyclictest0-21swapper/119:20:231
3341495992219,2cyclictest3056-21PK-Backend23:03:101
3341495992219,2cyclictest3056-21PK-Backend20:23:511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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