Hi, I'm doing some benchmarks regarding this problem: one set with baseline and one set with your patch. Machine was a 32 core machine (4 CPUs with 8 cores), 252 gib RAM. Both versions have the type align patch applied. pgbench-tools config:
SCALES="100" SETCLIENTS="1 4 8 16 32 48 64 96 128" SETTIMES=2 I added -M prepared to the pgbench call in the benchwarmer script. The read-only tests are finished, I come to similiar results as yours: <http://wwwtech.de/pg/benchmarks-lwlock-read-only/> I think the small differences are caused by the fact that I use TCP connections and not Unix domain sockets. The results are pretty impressive… I will post the read-write results as soon as they are finished. Best regards, -- Christian Kruse http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services
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