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2024-02-29 - 19:24

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #7

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 rack7slot7s.osadl.org (updated Thu Feb 29, 2024 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2439824034,2sleep10-21swapper/107:05:051
2440223428,2sleep00-21swapper/007:05:080
287362330,1chrt224-21systemd-journal07:12:092
2439523228,2sleep30-21swapper/307:05:033
26668993129,1cyclictest558-21lldpd10:41:473
26668992619,2cyclictest500-21in:imuxsock09:47:093
2666799260,3cyclictest0-21swapper/211:45:242
2665399255,19cyclictest534-21snmpd11:45:240
2665399250,24cyclictest534-21snmpd09:34:280
2666799242,1cyclictest558-21lldpd12:20:042
2665399242,5cyclictest19507-21diskmemload09:26:410
26667992322,1cyclictest534-21snmpd12:30:422
2666799231,21cyclictest0-21swapper/212:19:202
26659992312,4cyclictest224-21systemd-journal11:48:011
2665999231,1cyclictest558-21lldpd11:23:041
2665999230,5cyclictest224-21systemd-journal12:10:271
26667992216,3cyclictest558-21lldpd11:32:492
2666899212,14cyclictest534-21snmpd07:40:253
2666799218,9cyclictest500-21in:imuxsock10:27:252
26653992117,3cyclictest500-21in:imuxsock11:25:410
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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