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2026-01-02 - 13:12

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 Fri Jan 02, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1653029912800,1276cyclictest4124372sleep33
1653029911640,1160cyclictest586406-21sleep3
165302993340,331cyclictest238503-21chrt3
4512222460,3sleep134-21ksoftirqd/11
165302992517,5cyclictest438393-21sleep3
16530299181,13cyclictest171664-21turbostat3
16530299177,6cyclictest263981-21turbostat3
165302991714,1cyclictest0-21swapper/33
165302991714,1cyclictest0-21swapper/33
5793962161,7sleep1579541-21grep1
16530299166,7cyclictest4200902sleep33
165302991613,1cyclictest0-21swapper/33
165302991611,2cyclictest431951-21sleep3
16530299161,11cyclictest438674-21taskset3
16530299161,11cyclictest199489-21turbostat3
3821072151,12sleep0382142-21kthreadcore0
165302991513,1cyclictest0-21swapper/33
165302991512,1cyclictest0-21swapper/33
165302991512,1cyclictest0-21swapper/33
16530299151,11cyclictest488867-21taskset3
16530299151,11cyclictest309963-21taskset3
16530299151,11cyclictest270418-21turbostat3
16530299151,11cyclictest179382-21taskset3
16530299151,10cyclictest477155-21taskset3
16530299151,10cyclictest361448-21taskset3
16530299147,4cyclictest592441-21taskset3
16530299141,9cyclictest2773392sleep33
165302991412,1cyclictest0-21swapper/33
165302991412,1cyclictest0-21swapper/33
165302991412,1cyclictest0-21swapper/33
165302991412,1cyclictest0-21swapper/33
165302991412,1cyclictest0-21swapper/33
165302991412,1cyclictest0-21swapper/33
165302991412,0cyclictest0-21swapper/33
16530299141,11cyclictest354959-21chrt3
165302991411,1cyclictest0-21swapper/33
165302991411,1cyclictest0-21swapper/33
165302991411,1cyclictest0-21swapper/33
165302991411,1cyclictest0-21swapper/33
16530299141,10cyclictest451526-21taskset3
16530299141,10cyclictest218950-21taskset3
16530299140,11cyclictest528333-21taskset3
4516852130,1sleep1451840-21grep1
2642232131,2sleep00-21swapper/00
16530299131,9cyclictest476907-21taskset3
16530299131,9cyclictest445111-21taskset3
16530299131,9cyclictest418546-21taskset3
16530299131,9cyclictest328472-21taskset3
16530299131,9cyclictest296550-21taskset3
16530299131,9cyclictest270907-21taskset3
16530299131,9cyclictest212246-21chrt3
165302991312,0cyclictest0-21swapper/33
165302991312,0cyclictest0-21swapper/33
165302991311,1cyclictest0-21swapper/33
165302991311,1cyclictest0-21swapper/33
16530299131,10cyclictest493076-21taskset3
165302991310,1cyclictest0-21swapper/33
165302991310,1cyclictest0-21swapper/33
165302991310,1cyclictest0-21swapper/33
16530299130,11cyclictest367614-21turbostat3
16530299130,10cyclictest541419-21taskset3
16530299130,10cyclictest303069-21chrt3
3226122127,3sleep2322613-21/usr/sbin/munin2
301798120,8rtkit-daemon171814-21munin-node2
301798120,7rtkit-daemon199852-21cat0
301798120,4rtkit-daemon667-21lldpd0
16530299123,7cyclictest579624-21taskset3
16530299121,9cyclictest521735-21taskset3
16530299121,9cyclictest302700-21taskset3
16530299121,9cyclictest222754-21taskset3
16530299121,8cyclictest288889-21taskset3
16530299120,9cyclictest553182-21chrt3
16530299120,9cyclictest533828-21taskset3
16530299120,9cyclictest399860-21taskset3
4986362110,8sleep1500721-21grep1
4578792112,5sleep1457912-21apt-get1
3355042111,7sleep0335647-21df0
3351912111,7sleep0335256-21/usr/sbin/munin0
301798110,4rtkit-daemon3205-21sendmail-mta0
301798110,3rtkit-daemon3205-21sendmail-mta2
16530299110,9cyclictest560814-21taskset3
16530299110,9cyclictest392363-21taskset3
1648462110,3sleep30-21swapper/33
4725022102,5sleep20-21swapper/22
3183362100,1sleep2320405-21kthreadcore2
301798100,5rtkit-daemon514605-21ntp_states2
301798100,5rtkit-daemon389401-21kthreadcore2
301798100,5rtkit-daemon335268-21ls2
301798100,3rtkit-daemon430-21avahi-daemon0
301798100,1rtkit-daemon0-21swapper/22
1985002101,2sleep20-21swapper/22
580733290,1sleep1581707-21uname1
342146291,4sleep0342178-21apt-get0
304161291,5sleep2305183-21grep2
301921291,4sleep2301977-21ntp_states2
30179890,6rtkit-daemon386427-21vmstat2
30179890,6rtkit-daemon317-21systemd-udevd2
30179890,5rtkit-daemon636-21snmpd2
30179890,5rtkit-daemon636-21snmpd2
30179890,5rtkit-daemon636-21snmpd2
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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