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2024-04-27 - 02:43

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 Sat Apr 27, 2024 00:46:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33462652378371,5sleep120-21swapper/1219:05:034
33496242360319,13sleep130-21swapper/1319:08:025
33495712359318,15sleep00-21swapper/019:07:330
33495272357336,14sleep20-21swapper/219:07:028
33495482353333,13sleep30-21swapper/319:07:199
33494612352332,13sleep150-21swapper/1519:06:117
33461542352329,14sleep100-21swapper/1019:05:012
33497892351312,14sleep10-21swapper/119:09:591
33495982350330,13sleep140-21swapper/1419:07:476
33497312349329,13sleep60-21swapper/619:09:1612
33496402349328,14sleep80-21swapper/819:08:1214
33495372348326,14sleep110-21swapper/1119:07:113
33494852347329,12sleep50-21swapper/519:06:3411
33496152344321,15sleep70-21swapper/719:07:5513
33494362344325,12sleep90-21swapper/919:05:5015
33497292340319,14sleep40-21swapper/419:09:1410
3350205995655,1cyclictest3620664-21kworker/u32:2+flush-259:022:30:1915
3350197995249,2cyclictest3384390-21kworker/u32:0+events_unbound19:50:1813
3350197995249,2cyclictest3384390-21kworker/u32:0+events_unbound19:50:1813
3350213994948,1cyclictest3620664-21kworker/u32:2+flush-259:023:20:224
3350221994524,21cyclictest3658588-21kworker/15:2+events23:07:157
335022199448,36cyclictest0-21swapper/1500:19:347
335022199448,11cyclictest0-21swapper/1522:51:417
335022199448,11cyclictest0-21swapper/1522:51:417
335022199448,11cyclictest0-21swapper/1522:40:427
335022199448,11cyclictest0-21swapper/1521:45:487
335022199448,11cyclictest0-21swapper/1521:23:507
335022199448,11cyclictest0-21swapper/1520:50:537
335022199448,11cyclictest0-21swapper/1519:23:007
335022199448,11cyclictest0-21swapper/1500:08:357
3350185994443,1cyclictest3384390-21kworker/u32:0+flush-259:021:25:189
3350205994140,1cyclictest3499119-21kworker/u32:1+events_unbound21:05:2115
3350213993837,1cyclictest3569855-21kworker/u32:3+events_unbound22:25:164
335022199378,5cyclictest0-21swapper/1521:12:517
3350221993727,5cyclictest3363254-21kworker/15:2+events19:45:157
3350205993737,0cyclictest0-21swapper/900:02:4915
335022199368,4cyclictest0-21swapper/1519:12:017
3350221993635,1cyclictest3439260-21kworker/u32:1+flush-259:020:30:207
3350221993634,1cyclictest3475872-21kworker/15:0+events22:23:077
3350221993531,3cyclictest3363254-21kworker/15:2+events20:25:147
3350221993530,3cyclictest3658588-21kworker/15:2+events00:25:317
3350213993534,1cyclictest3378688-21kworker/u32:5+events_unbound19:45:164
3350221993433,1cyclictest3378688-21kworker/u32:5+flush-259:019:43:497
3350221993429,3cyclictest3658588-21kworker/15:2+events23:01:097
3350221993429,3cyclictest3658588-21kworker/15:2+events23:01:097
335020599340,34cyclictest3384535-21kworker/9:1-events20:15:1515
3350189993428,6cyclictest3769378-21snmpd19:10:2710
335022199339,11cyclictest0-21swapper/1500:30:337
3350221993329,3cyclictest3363254-21kworker/15:2+events19:35:237
3350221993329,3cyclictest3363254-21kworker/15:2+events19:25:007
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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