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2022-12-04 - 22:46

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, 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 
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x86 Intel Core i3-2310E @2100 MHz, Linux 5.10.47-rt46 (Profile)

Latency plot of shadow in rack #8, slot #2
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by a total of 2 SMIs that occured during the measurement.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 --smi -q
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 rack8slot2s.osadl.org (updated Sun Dec 04, 2022 12:43:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
533499111100,10cyclictest6423-21needreboot07:11:031
4973210041,47sleep00-21swapper/007:09:350
41892970,1sleep04194-21idleruntime-cro09:45:450
99712910,0sleep30-21swapper/311:44:513
62822900,0sleep20-21swapper/209:18:012
475829046,33sleep30-21swapper/307:06:493
489528946,32sleep10-21swapper/107:08:361
479428947,31sleep20-21swapper/207:07:162
246962880,0sleep10-21swapper/110:02:531
203232880,1sleep30-21swapper/312:21:113
53802820,0sleep00-21swapper/010:15:060
5336993630,2cyclictest0-21swapper/307:11:033
5335993530,3cyclictest6422-21uname07:11:032
5333993530,4cyclictest6424-21needreboot07:11:030
239932300,1sleep30-21swapper/310:31:093
533699291,1cyclictest0-21swapper/307:35:473
120672260,0sleep30-21swapper/309:51:173
74842250,1sleep00-21swapper/012:39:230
123462240,1sleep211154-21/usr/sbin/munin08:31:082
533499200,5cyclictest13378-21tr07:25:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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