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2024-04-20 - 00:33

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #3

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 rack5slot3s.osadl.org (updated Fri Apr 19, 2024 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
227252240165,24sleep20-21swapper/207:07:372
228872235158,25sleep10-21swapper/107:09:421
228962203166,24sleep00-21swapper/007:09:490
226442203165,25sleep30-21swapper/307:06:333
670321800,4sleep22301599cyclictest10:10:172
2613621630,4sleep02300599cyclictest11:00:010
23015997773,3cyclictest0-21swapper/210:38:472
23015995855,2cyclictest0-21swapper/207:42:342
165962570,4sleep2311ktimersoftd/211:50:182
143752570,4sleep014379-21gltestperf11:45:170
152182510,4sleep32302299cyclictest11:45:293
23022993519,3cyclictest0-21swapper/308:31:143
23022993421,9cyclictest0-21swapper/307:21:363
23022993420,9cyclictest0-21swapper/312:15:263
2300599346,13cyclictest4498-21munin-run07:40:020
23022993324,7cyclictest0-21swapper/308:41:323
23022993215,3cyclictest0-21swapper/307:49:303
2302299320,12cyclictest0-21swapper/308:52:563
2302299311,20cyclictest0-21swapper/308:10:523
2302299311,20cyclictest0-21swapper/308:10:523
2300599318,11cyclictest32474-21perf07:30:020
2300599317,11cyclictest24300-21idleruntime-cro08:25:010
2302299302,10cyclictest25607-21irqstats12:10:203
23022993018,8cyclictest0-21swapper/307:34:343
2301099300,21cyclictest0-21swapper/111:55:011
2300599308,10cyclictest0-21swapper/010:15:010
2302299298,7cyclictest0-21swapper/312:27:543
2300599296,11cyclictest13282-21munin-run08:00:000
2300599292,12cyclictest28697-21idleruntime-cro08:35:010
23022992815,8cyclictest0-21swapper/308:28:363
2302299281,12cyclictest9933-21irqstats07:50:223
2302299281,10cyclictest0-21swapper/307:13:553
2302299271,12cyclictest0-21swapper/311:08:023
2302299271,12cyclictest0-21swapper/309:28:563
2300599272,13cyclictest27104-21munin-run09:45:010
2302299261,16cyclictest0-21swapper/309:55:203
2302299261,11cyclictest178442sleep311:53:483
2300599261,12cyclictest13927-21awk09:15:000
2302299257,3cyclictest9817-21ntp_kernel_pll_10:20:183
2302299257,3cyclictest9817-21ntp_kernel_pll_10:20:183
2302299256,9cyclictest0-21swapper/311:19:163
23022992517,3cyclictest0-21swapper/308:37:083
2302299251,21cyclictest8599-21ntp_states09:00:243
23022992510,9cyclictest0-21swapper/308:06:023
23015992521,3cyclictest0-21swapper/209:29:442
2301099252,19cyclictest15149-21munin-run10:35:011
2301099251,16cyclictest25800-21kworker/u8:111:30:141
166542250,3sleep00-21swapper/008:05:190
251522240,4sleep121-21rcuc/112:10:151
23022992413,3cyclictest0-21swapper/308:59:383
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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