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2025-05-05 - 00:36

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #6

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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack3slot6s.osadl.org (updated Sun May 04, 2025 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16614211596,14sleep30-21swapper/307:06:433
16574211592,18sleep00-21swapper/007:06:110
16767210897,6sleep10-21swapper/107:08:411
16618210796,6sleep20-21swapper/207:06:462
138282990,0sleep00-21swapper/011:34:010
221012730,1sleep00-21swapper/008:40:170
13592710,1sleep11358-21if_err_eth010:15:181
16899993817,19cyclictest0-21swapper/309:10:153
223632350,1sleep20-21swapper/212:15:162
199872240,1sleep30-21swapper/307:15:193
1689699241,18cyclictest1954-21ssh11:55:130
1689899220,20cyclictest0-21swapper/209:40:162
41102210,1sleep24112-21ssh09:12:332
35542210,1sleep1221ktimersoftd/107:55:161
16898992118,2cyclictest11917-21kworker/u8:212:31:062
1689899211,2cyclictest0-21swapper/211:20:122
1689899210,19cyclictest0-21swapper/211:55:122
1689899210,16cyclictest0-21swapper/210:12:052
150122210,1sleep1221ktimersoftd/109:23:541
16898992017,2cyclictest23482-21kworker/u8:109:27:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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