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2024-04-25 - 19:30

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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 rack7slot7s.osadl.org (updated Thu Apr 25, 2024 12:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14893210764,38sleep10-21swapper/107:07:371
15017210087,9sleep30-21swapper/307:09:113
1496128464,16sleep20-21swapper/207:08:302
1500328270,8sleep00-21swapper/007:09:010
279992640,0sleep30-21swapper/310:55:023
1517299260,26cyclictest0-21swapper/210:43:152
1517299260,26cyclictest0-21swapper/209:32:152
1517299216,10cyclictest839-21apache_volume11:40:142
1517299210,21cyclictest0-21swapper/209:19:332
1517299210,0cyclictest0-21swapper/212:05:112
15169992120,1cyclictest0-21swapper/109:39:201
15167992121,0cyclictest0-21swapper/011:28:500
1517299200,20cyclictest0-21swapper/212:31:162
1517299200,19cyclictest0-21swapper/212:10:222
1517299190,19cyclictest0-21swapper/212:39:262
1517299190,19cyclictest0-21swapper/210:18:092
1516999194,14cyclictest0-21swapper/111:45:151
15169991918,1cyclictest0-21swapper/110:18:261
15167991917,1cyclictest0-21swapper/010:39:550
133432190,0sleep30-21swapper/311:07:283
1517299182,2cyclictest15513-21sed11:50:012
15169991817,0cyclictest0-21swapper/111:24:021
15177991716,1cyclictest0-21swapper/309:27:083
15177991711,5cyclictest5240-21apache212:12:413
15172991713,2cyclictest0-21swapper/210:58:022
15172991713,1cyclictest141rcu_preempt09:39:352
1517299170,3cyclictest0-21swapper/211:24:152
1517299170,14cyclictest0-21swapper/210:45:222
1516799172,14cyclictest0-21swapper/007:10:120
15167991716,1cyclictest0-21swapper/009:00:110
15167991714,1cyclictest0-21swapper/008:14:140
1516799170,3cyclictest0-21swapper/012:05:130
1516799170,0cyclictest0-21swapper/010:28:480
1517799160,16cyclictest0-21swapper/311:38:443
1517299166,8cyclictest500-21in:imuxsock10:33:242
1517299165,5cyclictest224-21systemd-journal09:23:122
15172991616,0cyclictest0-21swapper/211:12:252
15172991614,2cyclictest32-21ksoftirqd/209:30:002
1517299161,1cyclictest7758-21diskmemload11:31:572
1517299160,5cyclictest7758-21diskmemload11:09:522
1517299160,15cyclictest0-21swapper/211:15:242
1517299160,14cyclictest0-21swapper/210:36:062
1516999165,10cyclictest0-21swapper/108:30:121
1516799165,7cyclictest19497-21cron09:40:000
1516799164,6cyclictest4147-21perf07:55:000
1516799160,2cyclictest0-21swapper/009:21:590
15177991514,1cyclictest0-21swapper/312:02:083
15172991513,2cyclictest0-21swapper/209:54:012
1517299151,14cyclictest0-21swapper/210:53:152
1517299150,1cyclictest0-21swapper/210:01:232
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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