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2026-06-12 - 05:46

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #5

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 rack0slot5s.osadl.org (updated Fri Jun 12, 2026 00:45:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29887419915188131518808,4cyclictest0-21swapper/102
298875899909882909877,4cyclictest0-21swapper/157
298869899898903898896,6cyclictest0-21swapper/00
298875499817910817893,13cyclictest3714970-21CPU6
298873299804948804943,4cyclictest0-21swapper/814
298875899727159727154,4cyclictest0-21swapper/157
298871799720151720146,4cyclictest0-21swapper/511
298869899719005718999,4cyclictest181rcu_preempt0
298873299678598678588,8cyclictest3714968-21CPU14
298871299633339633333,5cyclictest0-21swapper/39
298874199541642541632,8cyclictest3714970-21CPU2
298872399528979528967,8cyclictest3714968-21CPU12
298875899526968526955,9cyclictest3714975-21CPU7
298873299496831496825,4cyclictest181rcu_preempt14
298874199478804478798,5cyclictest0-21swapper/102
298874199470988470982,4cyclictest181rcu_preempt2
298869899461301461296,4cyclictest0-21swapper/00
298871799453967453960,4cyclictest181rcu_preempt11
298871299444679444674,4cyclictest0-21swapper/39
298875199424707424699,7cyclictest3714968-21CPU5
298875899421730421721,7cyclictest3714968-21CPU7
298870799417889417876,8cyclictest3714974-21CPU8
298872399415980415967,8cyclictest3714970-21CPU12
298869899404004403992,8cyclictest3714971-21CPU0
298870799387873387860,11cyclictest3714975-21CPU8
298874799382958382951,4cyclictest181rcu_preempt4
298873799380860380852,5cyclictest181rcu_preempt15
298875199380599380595,3cyclictest0-21swapper/135
298874799379421379412,8cyclictest3714974-21CPU4
298874399377309377299,8cyclictest3714973-21CPU3
298874399375226375222,3cyclictest0-21swapper/113
298870799370117370113,3cyclictest0-21swapper/28
298869899365005364994,8cyclictest3714974-21CPU0
298875499362659362654,4cyclictest0-21swapper/146
298872399361823361813,8cyclictest0-21swapper/612
298869899361448361443,4cyclictest0-21swapper/00
298869899361420361410,8cyclictest3714968-21CPU0
298874399361372361368,3cyclictest0-21swapper/113
298870799359044359038,5cyclictest0-21swapper/28
298870799359044359038,5cyclictest0-21swapper/28
298875199358114358110,3cyclictest0-21swapper/135
298871299358079358075,3cyclictest0-21swapper/39
298872399357432357427,4cyclictest0-21swapper/612
298875499357351357346,4cyclictest0-21swapper/146
298875899357006356997,7cyclictest3714974-21CPU7
298875199355958355953,4cyclictest0-21swapper/135
298874399355944355939,4cyclictest0-21swapper/113
298870399355713355702,9cyclictest3714968-21CPU1
298871299354275354270,4cyclictest0-21swapper/39
298875899353859353854,4cyclictest0-21swapper/157
298875499353787353782,4cyclictest0-21swapper/146
298874199353527353522,4cyclictest0-21swapper/102
298875199352946352941,4cyclictest0-21swapper/135
298873799352874352868,5cyclictest0-21swapper/915
298874399352841352836,4cyclictest0-21swapper/113
298874799352502352496,5cyclictest0-21swapper/124
298874399352315352310,4cyclictest0-21swapper/113
298875199351877351871,5cyclictest0-21swapper/135
298872399350860350855,4cyclictest0-21swapper/612
298874799350856350851,4cyclictest0-21swapper/124
298875199350773350768,4cyclictest0-21swapper/135
298874199350316350311,4cyclictest0-21swapper/102
298869899350006350000,4cyclictest181rcu_preempt0
298871299349942349938,3cyclictest0-21swapper/39
298873299348243348238,4cyclictest0-21swapper/814
298873299343448343440,6cyclictest3714971-21CPU14
298875899343429343421,6cyclictest3714966-21CPU7
298875499340909340896,9cyclictest3714969-21CPU6
298872399340410340402,7cyclictest3714971-21CPU12
298875199335056335052,3cyclictest0-21swapper/135
298874399333977333968,8cyclictest3714972-21CPU3
298874399330591330583,7cyclictest3714975-21CPU3
298875899330061330056,4cyclictest0-21swapper/157
298874399329874329869,4cyclictest0-21swapper/113
298874799328293328286,6cyclictest3714968-21CPU4
298870799322954322943,9cyclictest3714973-21CPU8
298874199321219321213,4cyclictest0-21swapper/102
298873299318833318821,8cyclictest3714968-21CPU14
298873299315544315535,7cyclictest3714973-21CPU14
298873299313895313887,6cyclictest3714967-21CPU14
298870399310696310688,7cyclictest3714973-21CPU1
298870799309984309974,8cyclictest3714969-21CPU8
298873299309837309822,10cyclictest3714974-21CPU14
298869899309718309710,7cyclictest3714973-21CPU0
298874199304988304982,3cyclictest181rcu_preempt2
298870799303364303359,4cyclictest0-21swapper/28
298870399292476292471,4cyclictest0-21swapper/11
298871799292106292096,8cyclictest3714968-21CPU11
298874799289984289973,8cyclictest3714967-21CPU4
298873799288683288677,5cyclictest0-21swapper/915
298874799288316288307,7cyclictest3714966-21CPU4
298870799282818282813,4cyclictest0-21swapper/28
298872399281623281618,4cyclictest0-21swapper/612
298870799280554280544,8cyclictest3714966-21CPU8
298874199277109277104,4cyclictest0-21swapper/102
298874199276840276832,6cyclictest3714967-21CPU2
298870399276812276807,4cyclictest0-21swapper/11
298874799272757272749,6cyclictest0-21swapper/124
298870799269643269633,8cyclictest3714969-21CPU8
298875199268548268538,8cyclictest3714972-21CPU5
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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