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2024-10-09 - 05:34

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #7

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 rack0slot7s.osadl.org (updated Mon Aug 26, 2024 00:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1549965211972,19sleep00-21swapper/019:09:300
1549968210976,25sleep20-21swapper/219:09:322
1549632210577,21sleep10-21swapper/119:06:381
1550007210374,22sleep30-21swapper/319:09:533
155018999398,28cyclictest0-21swapper/322:11:523
136699300,2ntpd1604137-21ntpq21:10:170
136699250,3ntpd1580120-21ntpq20:15:162
155018999233,19cyclictest0-21swapper/321:00:083
155018999229,4cyclictest0-21swapper/320:07:513
155018999229,4cyclictest0-21swapper/319:36:473
155018999220,16cyclictest0-21swapper/322:05:143
15823342200,1sleep20-21swapper/220:20:152
1550180991918,1cyclictest0-21swapper/023:05:150
155018099190,1cyclictest0-21swapper/023:53:040
155018099190,19cyclictest0-21swapper/020:23:090
136699180,1ntpd0-21swapper/220:05:172
1550189991712,1cyclictest0-21swapper/323:20:203
155018999170,3cyclictest0-21swapper/321:14:563
155018999170,14cyclictest0-21swapper/321:05:183
1550186991716,1cyclictest0-21swapper/221:58:062
155018299173,6cyclictest0-21swapper/120:45:461
155018099170,1cyclictest0-21swapper/000:17:160
155018099170,17cyclictest0-21swapper/021:42:240
1550189991612,4cyclictest0-21swapper/322:53:113
1550189991612,1cyclictest0-21swapper/321:20:123
1550189991610,2cyclictest316092-21xdg-desktop-por20:38:563
155018999160,13cyclictest0-21swapper/320:40:143
1550186991615,1cyclictest0-21swapper/222:01:532
1550186991613,2cyclictest1074-21snmpd23:58:132
155018299167,9cyclictest0-21swapper/121:08:351
155018299160,16cyclictest0-21swapper/123:34:541
155018299160,16cyclictest0-21swapper/123:05:511
155018299160,16cyclictest0-21swapper/122:02:011
155018299160,16cyclictest0-21swapper/120:06:541
155018299160,16cyclictest0-21swapper/119:52:381
155018299160,16cyclictest0-21swapper/119:28:431
155018099160,16cyclictest0-21swapper/023:31:370
136699160,6ntpd491ktimers/323:35:173
155018999156,8cyclictest0-21swapper/320:11:103
155018999154,10cyclictest0-21swapper/322:55:473
1550189991514,1cyclictest0-21swapper/300:30:193
155018999150,6cyclictest0-21swapper/322:31:143
155018999150,15cyclictest0-21swapper/321:18:263
155018699156,9cyclictest0-21swapper/222:42:442
155018699156,9cyclictest0-21swapper/220:30:142
155018699150,15cyclictest0-21swapper/222:52:202
155018699150,15cyclictest0-21swapper/220:42:202
155018299156,9cyclictest0-21swapper/123:55:401
155018299150,7cyclictest0-21swapper/122:17:411
155018299150,6cyclictest0-21swapper/123:50:531
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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