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2024-04-20 - 00:41

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #4

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 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.

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 50 highest latencies:
System rackeslot4s.osadl.org (updated Fri Apr 19, 2024 12:44:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1976888994643,2cyclictest2386917-21kworker/u8:3+events_unbound12:40:011
1976888994643,2cyclictest2196624-21kworker/u8:0+events_unbound10:25:281
1976891994541,3cyclictest74-21kswapd011:10:002
1976888994135,4cyclictest2319123-21latency_hist11:40:011
1976888994135,4cyclictest2319123-21latency_hist11:40:011
1976881994136,3cyclictest74-21kswapd012:20:000
1976888993935,2cyclictest2252427-21kworker/u8:2+events_unbound11:15:101
1976888993632,3cyclictest2123153-21kworker/u8:2+events_unbound09:50:261
1976888993531,3cyclictest2325532-21kworker/u8:1+flush-259:012:10:271
1976895993429,3cyclictest1976646-21latency_hist07:10:023
1976891993430,3cyclictest74-21kswapd012:10:002
1976888993427,5cyclictest2023129-21latency_hist07:55:001
1976895993230,1cyclictest2143179-21fwupd09:35:503
1976895993228,3cyclictest2297104-21kworker/u8:4+events_unbound11:45:013
1976888993228,3cyclictest2182484-21kworker/u8:4+events_unbound10:55:241
1976895993126,3cyclictest2034070-21apt-get08:05:103
1976891993125,4cyclictest253-21systemd-journal09:30:012
1976895993026,3cyclictest2145434-21kworker/u8:1+flush-259:010:05:243
1976891993026,3cyclictest2123153-21kworker/u8:2+flush-259:009:55:272
1976891992926,2cyclictest74-21kswapd011:05:002
1976891992823,3cyclictest2039534-21base6408:10:002
1976888992821,5cyclictest253-21systemd-journal08:55:001
1976888992821,5cyclictest2394076-21latency_hist12:30:011
1976888992722,4cyclictest1982476-21apt-get07:15:131
1976888992722,3cyclictest2267578-21apt-get11:05:111
1976891992621,3cyclictest1997855-21apt-get07:30:112
1976888992623,2cyclictest2196624-21kworker/u8:0+flush-259:011:10:121
1976888992622,3cyclictest2280523-21kworker/u8:1+events_unbound11:25:231
1976888992622,3cyclictest2085236-21kworker/u8:3+events_unbound09:25:101
1976888992622,2cyclictest2085236-21kworker/u8:3+flush-259:009:45:011
1976895992521,3cyclictest1922655-21kworker/u8:4+flush-259:007:20:283
1976891992518,5cyclictest2190260-21ssh10:10:122
1976888992522,2cyclictest2033852-21kworker/u8:0+flush-259:008:20:001
1976895992421,2cyclictest74-21kswapd011:00:003
1976895992421,2cyclictest2252427-21kworker/u8:2+events_unbound11:00:263
1976891992420,3cyclictest2282383-21apt-get11:15:092
1976891992419,3cyclictest2028808-21base6408:00:012
1976888992421,2cyclictest2145434-21kworker/u8:1+flush-259:009:45:211
1976888992420,3cyclictest1992451-21kworker/u8:1+events_unbound07:45:001
1976888992418,4cyclictest253-21systemd-journal11:50:001
1976895992320,2cyclictest1966271-21kworker/u8:0+events_unbound07:25:163
1976891992319,3cyclictest74-21kswapd010:35:142
1976891992319,3cyclictest2188854-21ssh10:08:022
1976891992318,3cyclictest2252793-21/usr/sbin/munin10:55:202
197688899238,8cyclictest1982214-21munin-run07:15:001
1976888992320,2cyclictest2349245-21kworker/u8:0+events_unbound12:05:241
1976888992320,2cyclictest2145434-21kworker/u8:1+flush-259:010:25:011
1976888992319,3cyclictest253-21systemd-journal07:29:501
1976888992319,3cyclictest2252427-21kworker/u8:2+flush-259:011:01:341
1976895992219,2cyclictest2297103-21kworker/u8:3+flush-259:011:35:273
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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