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2023-04-01 - 16:12

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #1

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 Xeon E3-1230 V2 @3300 MHz, Linux 3.18.36-rt37 (Profile)

Latency plot of shadow in rack #0, slot #1
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -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 rack0slot1s.osadl.org (updated Sat Apr 01, 2023 12:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1613524424,17sleep70-21swapper/707:05:367
1614224230,8sleep50-21swapper/507:05:415
1628223917,19sleep40-21swapper/407:07:414
1626623919,17sleep60-21swapper/607:07:276
1561223614,18sleep10-21swapper/107:05:211
1626023515,17sleep00-21swapper/007:07:210
1620723515,17sleep30-21swapper/307:06:363
1617523515,17sleep20-21swapper/207:06:112
16697992116,4cyclictest0-21swapper/708:29:257
16690992116,2cyclictest0-21swapper/612:04:566
1666199210,2cyclictest0-21swapper/108:28:511
16697992015,4cyclictest0-21swapper/710:40:187
16697992015,3cyclictest0-21swapper/708:15:207
1666199200,1cyclictest0-21swapper/110:56:331
1666199200,1cyclictest0-21swapper/110:37:341
16697991915,3cyclictest0-21swapper/712:38:417
16697991915,3cyclictest0-21swapper/707:50:197
16697991914,4cyclictest0-21swapper/712:10:207
16697991914,4cyclictest0-21swapper/708:30:207
16697991914,2cyclictest0-21swapper/707:15:107
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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