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2026-09-21 - 03:38

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #8

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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  Congatec
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 rackeslot8s.osadl.org (updated Sun Sep 20, 2026 12:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8517402330,1sleep0851743-21unixbench-2d0
668470993026,1cyclictest0-21swapper/33
668470992318,2cyclictest0-21swapper/33
668470992217,3cyclictest803673-21turbostat3
668470992118,1cyclictest0-21swapper/33
668470992017,1cyclictest0-21swapper/33
668470991916,1cyclictest0-21swapper/33
668470991916,1cyclictest0-21swapper/33
668470991916,1cyclictest0-21swapper/33
668470991915,1cyclictest0-21swapper/33
66847099191,14cyclictest740322-21turbostat3
8582172180,9sleep1858797-21/usr/sbin/munin1
66847099188,7cyclictest991214-21turbostat3
668470991815,1cyclictest0-21swapper/33
668470991815,1cyclictest0-21swapper/33
66847099181,12cyclictest1043520-21taskset3
10119902181,14sleep01012030-21ntpq0
8307772170,7sleep0151ktimers/00
66847099176,7cyclictest8368082sleep33
668470991714,1cyclictest0-21swapper/33
668470991714,1cyclictest0-21swapper/33
668470991714,1cyclictest0-21swapper/33
668470991713,1cyclictest0-21swapper/33
66847099171,12cyclictest998836-21turbostat3
66847099171,12cyclictest960326-21taskset3
66847099171,11cyclictest982879-21taskset3
66847099171,11cyclictest906942-21turbostat3
66847099171,11cyclictest819202-21taskset3
66847099171,11cyclictest727879-21taskset3
66847099171,11cyclictest1054668-21taskset3
66847099171,10cyclictest7901152sleep33
66847099170,13cyclictest797371-21turbostat3
9082322161,5sleep014-21ksoftirqd/00
66847099162,10cyclictest784461-21taskset3
66847099162,10cyclictest1021563-21taskset3
668470991613,1cyclictest0-21swapper/33
668470991613,1cyclictest0-21swapper/33
668470991613,1cyclictest0-21swapper/33
668470991613,1cyclictest0-21swapper/33
668470991613,1cyclictest0-21swapper/33
668470991613,1cyclictest0-21swapper/33
668470991613,1cyclictest0-21swapper/33
66847099161,11cyclictest883597-21taskset3
66847099161,11cyclictest859514-21taskset3
66847099161,11cyclictest829517-21taskset3
66847099161,11cyclictest721197-21taskset3
66847099161,11cyclictest1135453-21taskset3
66847099161,11cyclictest1128334-21taskset3
66847099161,11cyclictest1067448-21taskset3
66847099161,11cyclictest1006841-21taskset3
66847099161,10cyclictest914967-21taskset3
66847099161,10cyclictest913434-21taskset3
66847099161,10cyclictest862219-21taskset3
66847099161,10cyclictest10834302sleep33
66847099161,10cyclictest1029819-21taskset3
8542232150,4sleep20-21swapper/22
66847099152,10cyclictest0-21swapper/33
66847099152,10cyclictest0-21swapper/33
66847099151,9cyclictest677160-21chrt3
668470991513,0cyclictest0-21swapper/33
668470991512,1cyclictest0-21swapper/33
66847099151,11cyclictest0-21swapper/33
66847099151,10cyclictest974521-21taskset3
66847099151,10cyclictest935552-21taskset3
66847099151,10cyclictest868960-21taskset3
66847099151,10cyclictest846018-21taskset3
66847099151,10cyclictest771759-21taskset3
66847099151,10cyclictest746874-21taskset3
66847099151,10cyclictest714770-21taskset3
66847099151,10cyclictest695510-21taskset3
66847099151,10cyclictest674647-21taskset3
66847099151,10cyclictest1028433-21taskset3
66847099150,11cyclictest928630-21taskset3
11049592150,2sleep11104965-21ssh1
8088772140,11sleep0808989-21ntpq0
66847099141,9cyclictest1051037-21taskset3
10997522131,4sleep0822618-21diskmemload0
9522132120,3sleep1331rcuc/11
9201552120,9sleep0920204-21ntpq0
8996442122,6sleep1899642-21apt-get1
10690052120,9sleep00-21swapper/00
9595692110,3sleep2959573-21ssh2
8750622110,8sleep0822618-21diskmemload0
8617732110,8sleep2862218-21sed2
66847099110,8cyclictest6683402sleep33
6624142111,5sleep00-21swapper/00
11205432110,8sleep11120549-21ssh1
10886422111,5sleep11088681-21ntpq1
10350182110,8sleep21035067-21grep2
10129322110,3sleep21012938-21ssh2
9332042101,6sleep2934967-21grep2
8460732100,3sleep2846184-21cpuspeed_turbos2
7973382100,7sleep1797586-21sed1
7890772100,1sleep00-21swapper/00
7519702101,5sleep1752020-21ntpq1
7283232100,7sleep0729054-21sed0
11422182100,6sleep11142261-21/usr/sbin/munin1
11216392100,7sleep11121640-21ischroot1
11115372102,4sleep01111580-21ntpq0
10672732100,2sleep21067279-21ssh2
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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