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2026-06-21 - 11:07

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 Sun Jun 21, 2026 00:46:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32270812211196,9sleep180-21swapper/1819:07:2610
32270812211196,9sleep180-21swapper/1819:07:2610
322719725348,3sleep60-21swapper/619:08:5416
322719725348,3sleep60-21swapper/619:08:5416
322706825246,3sleep70-21swapper/719:07:1517
322706825246,3sleep70-21swapper/719:07:1517
322719625044,3sleep50-21swapper/519:08:5315
322719625044,3sleep50-21swapper/519:08:5315
322695424741,3sleep30-21swapper/319:05:5213
322695424741,3sleep30-21swapper/319:05:5113
322710724641,3sleep140-21swapper/1419:07:426
322710724641,3sleep140-21swapper/1419:07:426
322713524539,3sleep190-21swapper/1919:08:0711
322713524539,3sleep190-21swapper/1919:08:0711
322719524438,4sleep40-21swapper/419:08:5314
322719524438,4sleep40-21swapper/419:08:5214
322722724237,3sleep80-21swapper/819:09:1618
322722724237,3sleep80-21swapper/819:09:1618
322718024135,3sleep100-21swapper/1019:08:382
322718024135,3sleep100-21swapper/1019:08:382
205199410,35ntpd0-21swapper/1119:05:203
205199410,35ntpd0-21swapper/1119:05:193
3227663994038,1cyclictest0-21swapper/521:58:5915
322728624037,2sleep20-21swapper/219:09:5012
322728624037,2sleep20-21swapper/219:09:5012
322703324037,2sleep170-21swapper/1719:06:459
322703324037,2sleep170-21swapper/1719:06:459
322694524035,3sleep150-21swapper/1519:05:437
322694524035,3sleep150-21swapper/1519:05:437
322765499390,33cyclictest3361412-40tracker-miner-f21:46:2212
322711623933,3sleep10-21swapper/119:07:491
322711623933,3sleep10-21swapper/119:07:491
3227663993734,3cyclictest0-21swapper/500:20:4215
322705423732,3sleep160-21swapper/1619:07:048
322705423732,3sleep160-21swapper/1619:07:048
322391323732,3sleep130-21swapper/1319:05:025
322391323732,3sleep130-21swapper/1319:05:015
322771499360,35cyclictest0-21swapper/1923:13:5811
322770999360,35cyclictest3307352-40tracker-miner-f20:41:5910
3227685993633,1cyclictest0-21swapper/1019:22:302
3227683993635,1cyclictest3328435-40tracker-miner-f21:10:0019
322767499360,35cyclictest3240762-40tracker-miner-f19:22:2817
322766799360,33cyclictest3299174-40tracker-miner-f20:33:2916
3227714993535,0cyclictest0-21swapper/1919:22:2811
322771499350,35cyclictest0-21swapper/1920:33:2311
3227709993535,0cyclictest0-21swapper/1819:52:5910
322770999350,35cyclictest0-21swapper/1822:22:5910
322770999350,35cyclictest0-21swapper/1822:22:5910
322770999350,35cyclictest0-21swapper/1819:22:2810
322770499350,34cyclictest3299174-40tracker-miner-f20:33:238
3227683993535,0cyclictest0-21swapper/921:19:5919
3227683993535,0cyclictest0-21swapper/920:33:2119
3227683993535,0cyclictest0-21swapper/920:17:0019
3227683993534,1cyclictest3249131-40tracker-miner-f19:32:5919
322768399350,35cyclictest0-21swapper/922:44:5919
322768399350,35cyclictest0-21swapper/921:14:5919
322768399350,0cyclictest0-21swapper/900:30:5819
3227674993532,0cyclictest0-21swapper/720:33:2217
322767499350,34cyclictest3374083-40tracker-miner-f22:02:5917
322765899350,34cyclictest3240762-40tracker-miner-f19:22:3013
322717923529,4sleep90-21swapper/919:08:3719
322717923529,4sleep90-21swapper/919:08:3719
3227714993434,0cyclictest0-21swapper/1921:40:5911
3227714993434,0cyclictest0-21swapper/1920:42:0011
3227709993434,0cyclictest0-21swapper/1822:15:5910
3227709993434,0cyclictest0-21swapper/1822:15:5910
3227709993434,0cyclictest0-21swapper/1820:57:5910
3227709993434,0cyclictest0-21swapper/1820:49:5910
3227709993434,0cyclictest0-21swapper/1820:33:2110
322770999340,33cyclictest3295110-40tracker-miner-f20:29:5910
3227706993432,1cyclictest0-21swapper/1721:38:599
322770499340,33cyclictest0-21swapper/1619:22:338
3227700993432,1cyclictest0-21swapper/1522:46:597
3227691993433,1cyclictest194550irq/149-eno122:26:384
3227691993433,1cyclictest194550irq/149-eno122:26:384
322768899340,33cyclictest3486592-40tracker-miner-f00:18:583
322768899340,33cyclictest0-21swapper/1123:21:593
3227685993431,2cyclictest3419714-40tracker-miner-f22:56:592
322768599340,33cyclictest3415857-40tracker-miner-f22:54:592
3227683993434,0cyclictest0-21swapper/923:57:5919
3227683993434,0cyclictest0-21swapper/922:05:5919
3227683993434,0cyclictest0-21swapper/900:39:5819
3227683993433,1cyclictest3319829-40tracker-miner-f20:57:0019
3227683993433,0cyclictest0-21swapper/920:41:5919
322768399340,33cyclictest0-21swapper/922:30:0019
322768399340,33cyclictest0-21swapper/922:29:5919
322767899340,0cyclictest0-21swapper/820:24:5918
3227674993433,1cyclictest0-21swapper/722:22:5917
3227674993433,1cyclictest0-21swapper/722:22:5917
322767499340,33cyclictest0-21swapper/723:32:5817
322767499340,33cyclictest0-21swapper/721:37:5917
322767499340,33cyclictest0-21swapper/720:41:5917
322766799340,33cyclictest0-21swapper/620:14:5916
322766399340,34cyclictest0-21swapper/520:33:2815
322765499340,33cyclictest0-21swapper/222:30:5612
322765499340,33cyclictest0-21swapper/222:24:4912
322765499340,33cyclictest0-21swapper/222:24:4912
322765499340,1cyclictest3299174-40tracker-miner-f20:33:2612
322713723429,3sleep00-21swapper/019:08:080
322713723429,3sleep00-21swapper/019:08:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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