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2024-12-10 - 19:49

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #a, 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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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 20 highest latencies:
System rackaslot6s.osadl.org (updated Thu Feb 04, 2021 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
395527420,3sleep0820-1kworker/0:1H19:05:480
552721380,3chrt21750-1kworker/0:2H21:03:110
221321350,2chrt31767-1kworker/0:3H00:33:570
1509021350,2chrt487-1kworker/0:0H22:44:030
1235621350,5chrt11282-1kworker/0:2H19:34:160
418321340,1chrt2991-1kworker/0:1H21:00:090
768821330,4chrt4283-1kworker/0:2H22:34:580
765621330,2chrt5318-1kworker/0:1H23:57:410
698921330,2chrt6779-1kworker/0:1H21:07:140
550621330,2chrt32702-1kworker/0:1H23:12:180
4740991332,123cyclictest21750-1kworker/0:2H21:15:480
3247521330,2chrt30601-1kworker/0:0H20:42:570
2457521330,2chrt23347-1kworker/0:1H20:17:410
1369421330,4chrt11282-1kworker/0:2H19:37:180
895221320,2chrt7772-1kworker/0:2H19:22:080
568221320,2chrt4610-1kworker/0:2H19:11:010
193021320,2chrt1772-1kworker/0:0H23:50:230
1555521320,2chrt24643-1kworker/0:2H23:25:250
975621310,2chrt8320-1kworker/0:1H22:37:000
2640021310,2chrt23664-1kworker/0:1H21:35:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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