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2024-07-25 - 12:59

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #4

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 20 highest latencies:
System rackcslot4s.osadl.org (updated Thu Jul 25, 2024 00:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3026799292,7cyclictest30294-21python322:25:013
3026799290,5cyclictest0-21swapper/321:55:003
30267992717,5cyclictest21375-21munin-run20:20:003
3025499263,14cyclictest19934-21apt-get23:30:130
30267992516,5cyclictest14917-21lsb_release20:00:003
30267992514,6cyclictest24567-21latency_hist23:45:003
3026799251,20cyclictest21796-21python322:00:013
3026799250,8cyclictest25397-21turbostat22:09:593
3026799233,17cyclictest31117-21awk20:50:003
30267992316,3cyclictest1580-21python319:20:003
30267992313,7cyclictest15358-21cat21:40:003
30267992313,6cyclictest26229-21pluginstate20:35:013
3026799231,13cyclictest23815-21date22:05:003
3026799230,5cyclictest31826-21munin-node19:15:003
30263992314,6cyclictest8746-21users21:15:352
3026799225,2cyclictest111rcu_preempt23:54:593
3026799222,17cyclictest652-17auditd23:30:013
3026799222,12cyclictest2445-21/usr/sbin/munin19:20:133
3026799221,7cyclictest18550-21awk21:50:003
3026799221,5cyclictest17709-21munin-run23:25:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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