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2025-11-06 - 14:01

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #6

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 rack0slot6s.osadl.org (updated Thu Nov 06, 2025 00:46:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
395065099876,35cyclictest0-21swapper/1820:06:1510
394995026055,3sleep170-21swapper/1719:07:089
395014625955,2sleep180-21swapper/1819:09:0910
395018825444,6sleep120-21swapper/1219:09:444
394993525243,6sleep40-21swapper/419:06:5514
394993325248,2sleep20-21swapper/219:06:5312
395000825146,3sleep190-21swapper/1919:07:5011
394996925042,5sleep150-21swapper/1519:07:267
395003424932,10sleep10-21swapper/119:08:131
395004924845,2sleep60-21swapper/619:08:1716
394993924841,4sleep70-21swapper/719:06:5817
395016924741,3sleep160-21swapper/1619:09:288
394989924742,3sleep30-21swapper/319:06:3413
395018624635,7sleep100-21swapper/1019:09:422
395001924540,3sleep80-21swapper/819:07:5918
394994724536,6sleep140-21swapper/1419:07:056
394982424539,3sleep130-21swapper/1319:05:445
394996324436,5sleep90-21swapper/919:07:2019
394986324440,2sleep110-21swapper/1119:06:023
394990124236,4sleep50-21swapper/519:06:3715
395062399408,30cyclictest3994783-21kworker/u80:4+i91520:01:0019
3950593993837,1cyclictest3933088-21kworker/0:2+pm00:28:020
3950629993710,25cyclictest0-21swapper/1123:47:003
3950629993710,25cyclictest0-21swapper/1123:47:003
395060399379,27cyclictest0-21swapper/320:48:5913
394989623729,5sleep00-21swapper/019:06:320
3950626993613,0cyclictest1121irq_work/1019:56:002
3950610993610,0cyclictest0-21swapper/500:14:5915
395062999358,26cyclictest0-21swapper/1120:39:013
395059899357,26cyclictest0-21swapper/119:30:371
395063999347,26cyclictest1501irq_work/1419:13:596
395062699347,26cyclictest1121irq_work/1023:28:002
395062099340,0cyclictest0-21swapper/822:49:0018
3950647993328,4cyclictest0-21swapper/1719:56:009
3950633993332,1cyclictest205950irq/149-eno122:26:244
395060099330,32cyclictest0-21swapper/220:46:2612
3950598993332,0cyclictest0-21swapper/119:46:201
3950598993331,1cyclictest0-21swapper/119:24:571
3950650993231,1cyclictest0-21swapper/1819:55:0410
3950633993231,1cyclictest205950irq/149-eno123:31:454
3950633993231,1cyclictest205950irq/149-eno121:30:004
3950633993231,1cyclictest205950irq/149-eno120:05:164
3950633993231,1cyclictest205950irq/149-eno119:46:324
3950633993231,1cyclictest205950irq/149-eno119:28:534
395061399326,26cyclictest761irq_work/622:31:1916
395060099320,32cyclictest0-21swapper/219:55:0012
395060099320,31cyclictest0-21swapper/223:30:5612
395060099320,31cyclictest0-21swapper/223:24:1912
395060099320,31cyclictest0-21swapper/223:01:2412
395060099320,31cyclictest0-21swapper/222:43:2612
395060099320,31cyclictest0-21swapper/221:52:3912
395060099320,31cyclictest0-21swapper/220:13:4212
395060099320,31cyclictest0-21swapper/220:06:1012
395060099320,1cyclictest4078677-40tracker-miner-f21:37:5212
3950641993128,2cyclictest3954475-40tracker-miner-f19:13:397
3950633993131,0cyclictest205950irq/149-eno123:19:264
3950633993131,0cyclictest205950irq/149-eno122:08:264
3950633993131,0cyclictest205950irq/149-eno119:13:554
3950633993130,1cyclictest205950irq/149-eno121:35:444
3950633993130,1cyclictest205950irq/149-eno120:45:154
3950633993130,1cyclictest205950irq/149-eno120:40:004
3950633993130,1cyclictest205950irq/149-eno120:34:334
3950633993130,1cyclictest205950irq/149-eno120:34:334
3950633993130,1cyclictest205950irq/149-eno100:13:054
3950620993131,0cyclictest0-21swapper/822:29:5818
3950616993131,0cyclictest0-21swapper/719:55:0517
395060099310,30cyclictest0-21swapper/221:45:4612
395060099310,30cyclictest0-21swapper/220:51:4612
3950593993131,0cyclictest3933088-21kworker/0:2+pm00:18:430
3950593993130,1cyclictest3933088-21kworker/0:2+pm21:30:000
395065499300,29cyclictest0-21swapper/1921:17:0011
3950633993030,0cyclictest205950irq/149-eno122:11:234
3950633993030,0cyclictest205950irq/149-eno119:55:294
3950633993029,1cyclictest205950irq/149-eno123:49:334
3950633993029,1cyclictest205950irq/149-eno123:49:324
3950633993029,1cyclictest205950irq/149-eno120:10:134
3950633993029,1cyclictest205950irq/149-eno100:35:214
3950626993030,0cyclictest0-21swapper/1000:02:592
3950610993030,0cyclictest61150irq/124-ahci[0000:00:17.0]23:35:5615
3950603993024,6cyclictest0-21swapper/319:32:3013
395060099303,26cyclictest401irq_work/219:51:2012
395060099300,29cyclictest0-21swapper/222:57:4812
395060099300,29cyclictest0-21swapper/222:29:2212
395060099300,29cyclictest0-21swapper/222:05:1312
3950593993029,1cyclictest3989661-40tracker-miner-f19:54:380
395065099290,28cyclictest0-21swapper/1819:19:1910
3950644992929,0cyclictest0-21swapper/1622:29:598
3950635992927,1cyclictest1431rcuc/1323:59:285
3950633992929,0cyclictest205950irq/149-eno123:58:074
3950633992929,0cyclictest205950irq/149-eno123:43:084
3950633992929,0cyclictest205950irq/149-eno122:15:164
3950633992929,0cyclictest205950irq/149-eno119:54:144
3950633992928,1cyclictest205950irq/149-eno123:21:284
3950633992928,1cyclictest205950irq/149-eno121:26:084
3950633992928,1cyclictest205950irq/149-eno121:10:014
395062999290,27cyclictest0-21swapper/1119:11:083
395062699296,0cyclictest1121irq_work/1019:31:002
3950623992927,1cyclictest4116875-40tracker-miner-f22:22:5819
395062399290,28cyclictest0-21swapper/923:47:5919
395062399290,28cyclictest0-21swapper/923:47:5819
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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