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2026-06-14 - 10:06

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 Sun Jun 14, 2026 00:46:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22111242368331,13sleep40-21swapper/419:06:2410
22113382363327,12sleep20-21swapper/219:09:198
22110812359340,12sleep50-21swapper/519:05:5311
22112192357337,13sleep150-21swapper/1519:07:397
22112702354316,31sleep80-21swapper/819:08:2014
22113292353333,13sleep110-21swapper/1119:09:123
22112742351332,13sleep120-21swapper/1219:08:254
22111302351333,12sleep100-21swapper/1019:06:302
22110992351333,12sleep30-21swapper/319:06:079
22114012350329,14sleep70-21swapper/719:09:5713
22113822350331,12sleep130-21swapper/1319:09:475
22110762350331,13sleep00-21swapper/019:05:470
22113982348328,13sleep60-21swapper/619:09:5612
22111672346326,13sleep90-21swapper/919:07:0115
22112182345324,14sleep140-21swapper/1419:07:396
22112812342321,14sleep10-21swapper/119:08:291
2211834994444,0cyclictest2421811-21kworker/2:2-events22:42:038
2211834994213,29cyclictest0-21swapper/223:40:078
2211834994140,0cyclictest0-21swapper/222:56:098
2211834994138,3cyclictest0-21swapper/221:52:338
2211834994038,2cyclictest0-21swapper/221:31:538
2211834994036,2cyclictest0-21swapper/200:21:398
2211834994011,29cyclictest0-21swapper/221:48:068
221183499399,29cyclictest2421811-21kworker/2:2-events22:49:018
2211834993937,2cyclictest2473352-21kworker/2:0-events23:47:418
2211834993910,1cyclictest0-21swapper/200:09:178
2211834993910,0cyclictest0-21swapper/222:15:418
2211834993836,2cyclictest0-21swapper/221:59:128
2211834993834,0cyclictest0-21swapper/222:22:138
221183499378,0cyclictest0-21swapper/223:56:318
2211834993737,0cyclictest0-21swapper/223:37:058
2211834993737,0cyclictest0-21swapper/223:15:298
2211834993737,0cyclictest0-21swapper/223:15:298
221183499369,27cyclictest0-21swapper/200:30:458
221183499365,1cyclictest211rcu_preempt22:54:018
2211834993636,0cyclictest0-21swapper/200:02:538
2211834993633,3cyclictest0-21swapper/219:33:258
221183499362,30cyclictest0-21swapper/222:34:498
221183499356,0cyclictest0-21swapper/219:42:088
221183499355,2cyclictest0-21swapper/223:23:418
2211834993533,2cyclictest0-21swapper/222:09:208
2211834993533,2cyclictest0-21swapper/220:48:018
2211834993533,0cyclictest0-21swapper/219:35:468
2211834993531,3cyclictest2349528-21kworker/u32:2+flush-259:023:28:578
2211834993529,3cyclictest1774-21snmpd23:06:278
2211834993529,3cyclictest1774-21snmpd23:06:278
221183499345,29cyclictest0-21swapper/220:06:398
221183499345,29cyclictest0-21swapper/220:06:398
221183499345,29cyclictest0-21swapper/219:49:288
221183499344,29cyclictest0-21swapper/221:02:578
221183499343,3cyclictest0-21swapper/223:30:558
2211834993432,2cyclictest0-21swapper/219:23:568
2211834993431,0cyclictest0-21swapper/219:51:038
221183499341,31cyclictest43-21ksoftirqd/220:41:518
221183499341,31cyclictest421ktimers/221:26:498
221183499340,1cyclictest2287658-21kworker/2:2-events20:51:548
221187199339,11cyclictest0-21swapper/1400:04:206
221186299330,33cyclictest0-21swapper/1122:05:153
221183499334,29cyclictest0-21swapper/221:23:058
2211834993333,0cyclictest0-21swapper/220:25:278
2211834993333,0cyclictest0-21swapper/220:20:478
2211834993333,0cyclictest0-21swapper/220:15:408
2211834993332,1cyclictest0-21swapper/221:40:538
2211834993331,2cyclictest2287658-21kworker/2:2-events20:55:398
2211834993331,2cyclictest0-21swapper/220:39:238
2211834993331,2cyclictest0-21swapper/220:30:078
221183499332,29cyclictest211rcu_preempt19:15:238
221183499330,31cyclictest2163865-21kworker/2:1+mm_percpu_wq20:13:398
221183499330,31cyclictest2163865-21kworker/2:1+events19:10:408
221183499330,31cyclictest0-21swapper/223:14:538
221183499330,31cyclictest0-21swapper/223:14:538
221183499330,31cyclictest0-21swapper/200:35:078
221183499330,30cyclictest2304455-21kworker/2:1+mm_percpu_wq21:09:158
221183499330,29cyclictest2163865-21kworker/2:1+mm_percpu_wq19:55:328
221183499330,29cyclictest2163865-21kworker/2:1+mm_percpu_wq19:55:328
2211862993229,3cyclictest1774-21snmpd23:26:193
2211862993229,3cyclictest1774-21snmpd19:59:473
2211862993229,3cyclictest1774-21snmpd19:59:473
221183499323,29cyclictest0-21swapper/219:26:428
2211834993232,0cyclictest0-21swapper/221:11:048
2211834993232,0cyclictest0-21swapper/220:04:128
2211834993232,0cyclictest0-21swapper/220:04:118
2211834993231,1cyclictest0-21swapper/222:29:318
221183499323,0cyclictest0-21swapper/222:12:468
2211834993229,3cyclictest0-21swapper/223:01:038
221183499320,32cyclictest0-21swapper/223:53:338
221183499320,29cyclictest0-21swapper/222:00:218
221183499320,29cyclictest0-21swapper/221:39:368
221183499320,29cyclictest0-21swapper/221:16:578
221183199320,29cyclictest0-21swapper/123:25:151
2211873993128,3cyclictest1774-21snmpd21:10:107
221187199317,10cyclictest0-21swapper/1423:31:226
2211871993130,1cyclictest1774-21snmpd21:56:146
221187199310,1cyclictest0-21swapper/1422:05:156
2211867993130,1cyclictest1774-21snmpd21:25:495
221186799310,30cyclictest0-21swapper/1320:19:355
221186799310,30cyclictest0-21swapper/1319:33:015
221186799310,1cyclictest0-21swapper/1321:23:495
221186599310,30cyclictest0-21swapper/1223:35:064
221186599310,30cyclictest0-21swapper/1222:46:004
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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