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2025-07-13 - 10:05

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #5

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack0slot5s.osadl.org (updated Sun Jul 13, 2025 00:47:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22584732392364,20sleep80-21swapper/819:07:4714
22583702382354,19sleep00-21swapper/019:06:170
22584202365338,18sleep130-21swapper/1319:07:025
22583452364311,17sleep120-21swapper/1219:05:584
22555182353332,13sleep50-21swapper/519:05:0311
22585202348321,19sleep20-21swapper/219:08:298
22584132345318,18sleep70-21swapper/719:06:5713
22585282344317,18sleep100-21swapper/1019:08:372
22585892342313,19sleep150-21swapper/1519:09:317
22585392341314,18sleep40-21swapper/419:08:4610
22584712341313,19sleep60-21swapper/619:07:4512
22584472341318,15sleep30-21swapper/319:07:269
22583972341315,18sleep90-21swapper/919:06:4215
22584182339311,18sleep110-21swapper/1119:07:013
22555742338312,18sleep10-21swapper/119:05:151
22583292337310,18sleep140-21swapper/1419:05:446
225896399340,23cyclictest2239778-21kworker/6:0+events23:31:4412
2258980993012,18cyclictest2209532-21kworker/10:1+events19:12:482
2258967993029,1cyclictest891ktimers/719:50:5013
2258967993029,1cyclictest891ktimers/719:50:5013
2258947993026,4cyclictest1526-21snmpd19:43:328
225897699290,28cyclictest0-21swapper/919:34:1615
2258963992924,2cyclictest1526-21snmpd20:57:1512
2258960992926,3cyclictest1526-21snmpd20:28:2611
2258951992924,4cyclictest1526-21snmpd00:34:589
2258997992826,2cyclictest1526-21snmpd22:35:586
2258997992826,2cyclictest1526-21snmpd21:14:476
2258997992826,1cyclictest1526-21snmpd22:41:196
225899799280,28cyclictest0-21swapper/1420:28:426
2258993992827,1cyclictest1526-21snmpd19:18:375
2258993992827,1cyclictest1526-21snmpd00:36:315
2258988992827,1cyclictest1526-21snmpd22:31:384
2258988992827,1cyclictest1526-21snmpd19:36:114
225898899280,1cyclictest0-21swapper/1221:50:094
2258985992826,2cyclictest1526-21snmpd20:18:003
225897699280,28cyclictest0-21swapper/920:43:3315
225897699280,27cyclictest0-21swapper/923:35:2915
2258971992826,1cyclictest1526-21snmpd20:42:1214
225896799280,28cyclictest0-21swapper/700:19:4013
2258960992825,3cyclictest1526-21snmpd20:01:2911
2258960992825,3cyclictest1526-21snmpd20:01:2811
2258960992825,3cyclictest1526-21snmpd19:29:0811
2258956992827,1cyclictest1526-21snmpd23:23:4910
2258947992826,1cyclictest1526-21snmpd21:13:268
2258947992823,5cyclictest1526-21snmpd22:29:128
2258942992827,1cyclictest1526-21snmpd00:21:521
225893499280,28cyclictest0-21swapper/023:29:050
2259002992726,1cyclictest1526-21snmpd22:57:127
225900299270,27cyclictest0-21swapper/1520:57:437
225900299270,27cyclictest0-21swapper/1520:53:287
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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