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2024-07-27 - 04:09

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #2

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 rack0slot2s.osadl.org (updated Sat Jul 27, 2024 00:44:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
63259399449447,2cyclictest574863-21snmpd23:22:290
63262899446446,0cyclictest664658-21kworker/9:2+events20:53:189
63262899443441,2cyclictest632381-21turbostat19:14:569
63262699443440,2cyclictest574863-21snmpd20:56:498
63259399439438,1cyclictest574863-21snmpd22:26:270
63259399437434,3cyclictest717746-21kworker/0:0+events22:30:210
63262899435435,0cyclictest648789-21kworker/9:2+pm19:53:209
63262899435433,2cyclictest683475-21turbostat20:49:559
63262899433433,0cyclictest732219-21kworker/9:1+events22:36:469
63262899432430,2cyclictest664936-21turbostat20:14:569
63259999432432,0cyclictest574863-21snmpd23:53:241
63259399432431,1cyclictest574863-21snmpd19:53:200
63262899431431,0cyclictest736149-21kworker/9:0+pm22:26:279
63262899431429,2cyclictest736149-21kworker/9:0+pm23:50:129
63259999430428,2cyclictest574863-21snmpd19:56:571
63262899429428,1cyclictest696453-21kworker/9:1+events21:12:539
63262199429428,1cyclictest574863-21snmpd23:40:127
63262899426425,1cyclictest699379-21turbostat21:19:559
63262899426423,3cyclictest651675-21turbostat19:49:569
63262899425424,1cyclictest736149-21kworker/9:0+events22:40:239
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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