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InfluxDB
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I don't know of a Carmack engine that doesn't have a benchmark facility.
timedemo uscache
The DOOM3 source is here https://github.com/id-Software/DOOM-3
There are lots of fascilities for recording and playing back demos. The author could record their own gameplay and play it back in realtime vs running timedemo (which plays back as fast as possible).
2865: cmdSystem->AddCommand( "recordDemo", Session_RecordDemo_f, CMD_FL_SYSTEM, "records a demo" );
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