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2023-12-02 - 20:24

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, 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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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 rackbslot8s (updated Sat Dec 02, 2023 12:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10526812127113,9sleep00-21swapper/007:09:310
1052440212498,21sleep10-21swapper/107:06:031
10526502123109,9sleep70-21swapper/707:09:067
10506122122107,10sleep20-21swapper/207:05:162
1052490212190,9sleep40-21swapper/407:06:464
1052516212094,9sleep30-21swapper/307:07:103
10524542119104,10sleep60-21swapper/607:06:166
1052500211690,21sleep50-21swapper/507:06:565
10529879910395,3cyclictest0-21swapper/610:00:186
10529829910299,3cyclictest545-21snmpd10:31:005
1052982991020,0cyclictest0-21swapper/510:38:155
10529789910298,4cyclictest545-21snmpd10:21:294
1052978991020,100cyclictest0-21swapper/410:36:544
1052978991020,0cyclictest1137538-21ssh09:31:164
10529709910299,1cyclictest545-21snmpd11:33:522
1052989991010,99cyclictest0-21swapper/711:54:507
1052989991010,101cyclictest0-21swapper/712:07:457
10529879910199,2cyclictest545-21snmpd08:11:406
10529879910198,3cyclictest1174509-21cat10:10:236
10529829910199,2cyclictest545-21snmpd11:27:225
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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