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2025-04-03 - 15:57

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, 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 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 rack0slot4s.osadl.org (updated Thu Apr 03, 2025 00:46:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38698582360339,14sleep120-21swapper/1219:07:574
38699012349329,13sleep40-21swapper/419:08:2110
38699662347326,12sleep00-21swapper/019:09:070
38699632344321,15sleep140-21swapper/1419:09:056
38698982341318,15sleep10-21swapper/119:08:191
38697412341323,11sleep90-21swapper/919:06:3415
38697022341319,14sleep150-21swapper/1519:06:087
38680942341323,6sleep60-21swapper/619:05:2712
38700272340320,12sleep100-21swapper/1019:09:492
38698162340317,15sleep130-21swapper/1319:07:265
38696642339317,14sleep30-21swapper/319:05:399
38698332337315,14sleep70-21swapper/719:07:3713
38697812335314,14sleep50-21swapper/519:07:0311
38697442334312,14sleep110-21swapper/1119:06:373
38697982329307,14sleep20-21swapper/219:07:168
38697152313291,14sleep80-21swapper/819:06:1814
387050599511,11cyclictest405520data-loop.000:16:206
405420410,39data-loop.03792200-21kworker/7:1+events22:25:2413
3870461993434,0cyclictest0-21swapper/022:02:580
3870461993434,0cyclictest0-21swapper/022:02:580
3870498993329,3cyclictest2867454-21chrome21:31:274
387046399330,1cyclictest0-21swapper/123:40:281
387049299320,29cyclictest0-21swapper/1022:55:142
3870508993129,2cyclictest3887814-21kworker/u32:0+flush-259:019:30:207
387050899310,30cyclictest0-21swapper/1500:07:347
387050599312,29cyclictest0-21swapper/1420:45:176
387050299310,30cyclictest0-21swapper/1319:49:465
387050299310,30cyclictest0-21swapper/1319:41:245
387049899310,30cyclictest0-21swapper/1200:00:174
3870486993129,1cyclictest1813-21snmpd20:28:4014
387048699310,30cyclictest0-21swapper/819:44:5614
387048199310,30cyclictest0-21swapper/623:55:1912
387048199310,30cyclictest0-21swapper/621:31:2812
3870476993130,1cyclictest3988179-21mii-tool20:40:1611
3870476993130,1cyclictest1813-21snmpd00:08:1011
387047699310,31cyclictest0-21swapper/500:01:3411
387047699310,30cyclictest0-21swapper/523:49:1611
387047699310,30cyclictest0-21swapper/519:11:2611
387047699310,1cyclictest0-21swapper/519:26:4511
3870473993130,1cyclictest1813-21snmpd19:16:5010
387047399311,27cyclictest0-21swapper/400:20:1610
387047399310,30cyclictest0-21swapper/422:28:0510
3870471993129,2cyclictest4083950-21kworker/u32:0+events_unbound22:10:099
387046199310,30cyclictest0-21swapper/023:57:040
387046199310,30cyclictest0-21swapper/023:16:330
3870508993029,1cyclictest1813-21snmpd23:16:397
3870508993029,1cyclictest1813-21snmpd22:47:387
387050899300,1cyclictest0-21swapper/1521:58:157
387050899300,1cyclictest0-21swapper/1520:22:117
3870505993029,1cyclictest1813-21snmpd20:07:106
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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