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2025-12-02 - 07:25

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 Tue Dec 02, 2025 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5873829913790,1375cyclictest6907092sleep33
190898270,11rtkit-daemon1048327-21ssh0
587382992320,1cyclictest0-21swapper/33
587382992220,1cyclictest0-21swapper/33
587382992219,1cyclictest0-21swapper/33
58738299202,14cyclictest991936-21turbostat3
58738299201,15cyclictest740907-21turbostat3
587382991917,1cyclictest0-21swapper/33
587382991816,1cyclictest0-21swapper/33
587382991816,1cyclictest0-21swapper/33
587382991815,1cyclictest0-21swapper/33
587382991815,1cyclictest0-21swapper/33
587382991815,1cyclictest0-21swapper/33
587382991815,1cyclictest0-21swapper/33
58738299177,7cyclictest878464-21turbostat3
587382991715,1cyclictest0-21swapper/33
587382991714,1cyclictest0-21swapper/33
587382991714,1cyclictest0-21swapper/33
587382991714,1cyclictest0-21swapper/33
587382991714,1cyclictest0-21swapper/33
58738299171,12cyclictest658799-21turbostat3
58738299166,7cyclictest703020-21turbostat3
587382991614,1cyclictest0-21swapper/33
587382991613,1cyclictest0-21swapper/33
587382991613,1cyclictest0-21swapper/33
587382991613,1cyclictest0-21swapper/33
587382991613,1cyclictest0-21swapper/33
587382991613,1cyclictest0-21swapper/33
58738299161,12cyclictest1024379-21taskset3
58738299161,11cyclictest773701-21taskset3
190898160,4rtkit-daemon884946-21ssh0
587382991513,1cyclictest0-21swapper/33
587382991513,1cyclictest0-21swapper/33
587382991513,1cyclictest0-21swapper/33
587382991512,1cyclictest0-21swapper/33
587382991512,1cyclictest0-21swapper/33
587382991512,1cyclictest0-21swapper/33
587382991512,1cyclictest0-21swapper/33
587382991512,1cyclictest0-21swapper/33
58738299151,10cyclictest627660-21taskset3
587382991413,0cyclictest0-21swapper/33
587382991412,1cyclictest0-21swapper/33
587382991412,1cyclictest0-21swapper/33
587382991412,1cyclictest0-21swapper/33
587382991412,1cyclictest0-21swapper/33
587382991412,1cyclictest0-21swapper/33
587382991412,1cyclictest0-21swapper/33
587382991412,1cyclictest0-21swapper/33
587382991412,1cyclictest0-21swapper/33
587382991411,1cyclictest0-21swapper/33
587382991411,1cyclictest0-21swapper/33
587382991411,1cyclictest0-21swapper/33
587382991411,1cyclictest0-21swapper/33
587382991411,1cyclictest0-21swapper/33
587382991411,1cyclictest0-21swapper/33
587382991411,1cyclictest0-21swapper/33
587382991411,1cyclictest0-21swapper/33
587382991411,1cyclictest0-21swapper/33
587382991411,1cyclictest0-21swapper/33
587382991411,1cyclictest0-21swapper/33
587382991411,1cyclictest0-21swapper/33
58738299141,10cyclictest951513-21turbostat3
58738299141,10cyclictest715575-21taskset3
58738299141,10cyclictest1050804-21taskset3
587382991410,1cyclictest0-21swapper/33
9586702131,4sleep1958676-21ssh1
58738299131,9cyclictest838411-21taskset3
58738299131,9cyclictest614516-21turbostat3
587382991311,1cyclictest0-21swapper/33
58738299131,10cyclictest677459-21taskset3
587382991310,1cyclictest0-21swapper/33
58738299130,10cyclictest960701-21taskset3
8993772121,8sleep0900346-21memory0
58738299129,1cyclictest0-21swapper/33
190898120,8rtkit-daemon870056-21ssh0
190898120,7rtkit-daemon893772-21ssh0
6398652112,6sleep0299-21systemd-journal0
6398652112,6sleep0299-21systemd-journal0
190898110,6rtkit-daemon792688-21grep0
190898110,6rtkit-daemon1039403-21ssh0
190898110,4rtkit-daemon860719-21ssh0
190898110,4rtkit-daemon756542-21ssh0
190898110,3rtkit-daemon999727-21ssh0
190898110,3rtkit-daemon171rcu_preempt0
8131322100,7sleep2813138-21ssh2
7893532105,3sleep10-21swapper/11
7819712101,6sleep0782164-21/usr/sbin/munin0
7732312101,6sleep1740900-21diskmemload1
7568632101,2sleep20-21swapper/22
6663522100,1sleep20-21swapper/22
190898100,6rtkit-daemon852159-21/usr/sbin/munin0
190898100,6rtkit-daemon819592-21python30
190898100,6rtkit-daemon319-21systemd-udevd0
190898100,5rtkit-daemon835386-21memory0
190898100,5rtkit-daemon803898-21ssh0
190898100,5rtkit-daemon771832-21ssh0
190898100,5rtkit-daemon709308-21munin-run1
190898100,5rtkit-daemon667-21snmpd1
190898100,4rtkit-daemon763937-21ssh0
190898100,3rtkit-daemon667-21snmpd1
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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