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2024-05-25 - 09:59

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 Sat May 25, 2024 00:44:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3145569995753,3cyclictest74-21kswapd023:34:593
3145558994946,2cyclictest3139709-21kworker/u8:1+events_unbound19:27:171
3145563994741,4cyclictest516-21rs:main2
3145558994744,2cyclictest3139709-21kworker/u8:1+events_unbound19:18:081
3145563994642,3cyclictest3545022-21kworker/u8:0+events_unbound00:15:132
3145569994441,2cyclictest74-21kswapd022:05:013
3145558994239,2cyclictest3129551-21kworker/u8:4+events_unbound19:10:251
3145569993835,2cyclictest74-21kswapd023:35:103
3145563993731,4cyclictest253-21systemd-journal19:19:472
3145558993732,4cyclictest3546928-21latency_hist00:15:001
3145563993633,2cyclictest3309590-21kworker/u8:0+events_unbound22:05:112
3145563993632,3cyclictest3095162-21kworker/u8:0+events_unbound19:20:092
3145558993634,2cyclictest3524774-21kworker/u8:1+events_unbound00:00:051
3145553993629,4cyclictest253-21systemd-journal19:28:560
3145553993427,5cyclictest253-21systemd-journal19:32:160
3145563993329,3cyclictest74-21kswapd021:40:122
3145558993331,2cyclictest3095162-21kworker/u8:0+events_unbound19:23:031
3145553993327,4cyclictest3562275-21diskstats00:25:120
3145569993226,4cyclictest253-21systemd-journal19:12:213
3145563993228,3cyclictest74-21kswapd023:30:002
3145558993230,2cyclictest3168195-21kworker/u8:2+flush-259:019:30:411
3145569993128,2cyclictest74-21kswapd022:20:013
3145563993127,3cyclictest3257280-21kworker/u8:4+events_unbound21:05:182
3145558993127,3cyclictest3337642-21kworker/u8:1+events_unbound22:20:151
3145563992926,2cyclictest74-21kswapd000:30:012
3145563992926,2cyclictest3168195-21kworker/u8:2+flush-259:019:34:312
3145563992823,3cyclictest3495148-21kworker/u8:2+flush-259:000:00:002
3145563992821,5cyclictest3465634-21latency_hist23:20:002
3145558992825,2cyclictest74-21kswapd022:35:001
3145558992825,2cyclictest3179656-21kworker/u8:0+events_unbound19:40:191
3145558992824,3cyclictest3200066-21/usr/sbin/munin20:00:151
3145569992721,4cyclictest3174064-21latency_hist19:35:013
3145563992723,3cyclictest74-21kswapd000:10:002
3145563992722,3cyclictest3168195-21kworker/u8:2+flush-259:019:40:002
3145558992724,2cyclictest3199821-21kworker/u8:3+events_unbound21:25:171
3145558992722,3cyclictest3339886-21ssh21:55:131
3145563992622,3cyclictest3179656-21kworker/u8:0+flush-259:019:50:212
3145563992620,4cyclictest3406431-21/usr/sbin/munin22:40:162
3145558992623,2cyclictest3257280-21kworker/u8:4+events_unbound21:15:181
3145558992623,2cyclictest3257280-21kworker/u8:4+events_unbound21:10:201
3145558992623,2cyclictest3257280-21kworker/u8:4+events_unbound21:10:191
3145558992622,3cyclictest3179656-21kworker/u8:0+events_unbound19:50:281
3145558992621,2cyclictest3199821-21kworker/u8:3+events_unbound21:20:321
3145569992520,4cyclictest3189803-21kworker/u8:2+flush-259:020:35:003
3145563992522,2cyclictest3480397-21kworker/u8:4+events_unbound23:35:112
3145558992523,2cyclictest3391342-21kworker/u8:0+events_unbound22:42:181
3145558992523,2cyclictest3189803-21kworker/u8:2+events_unbound20:25:181
3145558992522,2cyclictest3405253-21kworker/u8:2+events_unbound22:59:561
3145558992522,1cyclictest3337642-21kworker/u8:1+events_unbound23:18:101
3145558992521,3cyclictest3436321-21/usr/sbin/munin23:00:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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