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2026-06-04 - 01:54

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackeslot6s.osadl.org (updated Wed Jun 03, 2026 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3667574991161,2cyclictest0-21swapper/007:55:010
366757499108104,2cyclictest0-21swapper/009:25:020
3667578999387,4cyclictest311ktimers/207:10:012
3667574998746,33cyclictest20650irq/252-8000000.ethernet11:05:290
366757499817,8cyclictest3668622-21tune2fs07:15:020
3667574997746,25cyclictest20650irq/252-8000000.ethernet12:40:010
3667574997539,31cyclictest20650irq/252-8000000.ethernet08:20:190
3667574997531,38cyclictest3688741-21fschecks_time09:10:200
366757499751,2cyclictest0-21swapper/008:20:010
3667578997413,21cyclictest3695405-21/usr/sbin/munin09:50:172
3667574997432,35cyclictest3674291-21/usr/sbin/munin07:45:220
3667574997239,29cyclictest20650irq/252-8000000.ethernet11:15:270
3667574997137,30cyclictest20650irq/252-8000000.ethernet07:25:260
3667574997040,25cyclictest20650irq/252-8000000.ethernet12:05:230
3667574997039,26cyclictest20650irq/252-8000000.ethernet10:45:170
3667574996944,20cyclictest20650irq/252-8000000.ethernet12:00:210
3667574996944,20cyclictest20650irq/252-8000000.ethernet12:00:200
3667574996839,24cyclictest20650irq/252-8000000.ethernet11:35:170
3667574996739,24cyclictest20650irq/252-8000000.ethernet12:10:260
366757499671,2cyclictest0-21swapper/009:10:010
3667574996645,15cyclictest0-21swapper/009:00:270
3667574996637,25cyclictest20650irq/252-8000000.ethernet10:55:290
3667574996637,25cyclictest20650irq/252-8000000.ethernet08:55:180
3667574996539,22cyclictest20650irq/252-8000000.ethernet11:10:170
3667574996538,23cyclictest20650irq/252-8000000.ethernet12:20:160
3667574996537,24cyclictest20650irq/252-8000000.ethernet11:30:160
3667574996532,29cyclictest3704567-21cut10:45:010
3667574996521,38cyclictest131ktimers/010:35:130
366757499651,3cyclictest0-21swapper/010:30:130
3667574996437,24cyclictest20650irq/252-8000000.ethernet09:45:200
3667574996435,25cyclictest20650irq/252-8000000.ethernet07:45:000
3667574996347,13cyclictest3681200-21phc2sys08:25:250
3667574996339,20cyclictest20650irq/252-8000000.ethernet09:35:220
3667574996329,31cyclictest20850irq/208-8000000.ethernet08:40:210
3667574996329,31cyclictest20850irq/208-8000000.ethernet08:40:210
3667574996237,21cyclictest0-21swapper/007:40:010
3667574996231,26cyclictest0-21swapper/007:10:300
3667574996139,17cyclictest20650irq/252-8000000.ethernet09:30:150
3667574996137,20cyclictest20650irq/252-8000000.ethernet11:55:010
3667574996135,23cyclictest20650irq/252-8000000.ethernet09:15:250
366757499611,57cyclictest3700785-21memory10:20:240
3667574996038,18cyclictest20650irq/252-8000000.ethernet11:55:290
3667574996038,18cyclictest20650irq/252-8000000.ethernet11:45:180
366757499602,3cyclictest0-21swapper/012:30:010
366757499601,5cyclictest3671919-21xargs07:30:290
3667574995945,10cyclictest20650irq/252-8000000.ethernet10:55:000
3667574995939,16cyclictest20650irq/252-8000000.ethernet09:55:000
3667574995936,20cyclictest20650irq/252-8000000.ethernet08:00:220
3667574995936,20cyclictest20650irq/252-8000000.ethernet08:00:220
3667574995926,30cyclictest20850irq/208-8000000.ethernet11:40:110
3667574995841,13cyclictest20650irq/252-8000000.ethernet11:20:160
3667574995838,16cyclictest274-21systemd-journal11:30:000
3667574995836,18cyclictest20650irq/252-8000000.ethernet08:05:120
3667574995829,25cyclictest3720077-21dropbear12:15:190
3667574995732,22cyclictest0-21swapper/010:05:000
366757499572,49cyclictest3702052-21latency_hist10:30:010
3667574995719,33cyclictest3685634-21grep08:50:300
3667574995628,24cyclictest0-21swapper/009:40:290
3667574995620,33cyclictest0-21swapper/009:55:290
3667574995620,32cyclictest0-21swapper/007:55:290
3667574995615,34cyclictest0-21swapper/007:10:000
366757899556,33cyclictest30-21rcuc/208:15:192
3667575995533,15cyclictest231ktimers/107:20:151
3667574995531,21cyclictest3722968-21ps12:30:270
3667574995522,31cyclictest20850irq/208-8000000.ethernet08:45:170
3667574995517,3cyclictest20850irq/208-8000000.ethernet10:10:180
3667574995516,32cyclictest0-21swapper/008:30:200
3667574995414,4cyclictest0-21swapper/010:10:010
3667574995414,4cyclictest0-21swapper/010:10:010
3667578995331,15cyclictest311ktimers/207:55:152
3667575995347,4cyclictest231ktimers/108:30:011
3667574995319,5cyclictest0-21swapper/008:35:190
3667578995244,4cyclictest3670286-21unixbench_multi07:20:292
3667575995240,9cyclictest3696843-21grep09:55:291
3667574995228,21cyclictest0-21swapper/010:15:180
3667575995129,16cyclictest231ktimers/110:20:111
3667575995129,14cyclictest231ktimers/108:15:141
3667574995120,4cyclictest20850irq/208-8000000.ethernet08:10:300
3667574995120,28cyclictest20850irq/208-8000000.ethernet11:00:250
3667574995120,28cyclictest20850irq/208-8000000.ethernet11:00:250
3667578995040,6cyclictest0-21swapper/210:30:292
366757899502,22cyclictest32-21ksoftirqd/211:10:002
366757599503,18cyclictest22-21rcuc/111:10:001
3667575995029,16cyclictest231ktimers/110:10:141
3667578994938,8cyclictest0-21swapper/207:50:302
3667578994836,10cyclictest0-21swapper/212:20:012
3667575994830,12cyclictest231ktimers/107:40:151
3667574994818,4cyclictest20850irq/208-8000000.ethernet09:25:280
3667574994818,4cyclictest20850irq/208-8000000.ethernet09:25:280
3667578994632,8cyclictest0-21swapper/210:20:282
3667575994639,4cyclictest3718020-21unixbench_multi12:00:301
3667575994639,4cyclictest3718020-21unixbench_multi12:00:301
3667575994636,6cyclictest3723986-21grep12:35:281
3667578994532,9cyclictest311ktimers/210:15:132
3667575994535,5cyclictest0-21swapper/112:20:271
3667575994527,13cyclictest231ktimers/109:50:111
3667574994516,3cyclictest20850irq/208-8000000.ethernet07:20:230
3667578994431,8cyclictest0-21swapper/209:05:292
3667578994428,11cyclictest0-21swapper/208:55:292
3667575994428,10cyclictest0-21swapper/111:45:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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