Hiroki Kataoka <kataoka(at)interwiz(dot)koganei(dot)tokyo(dot)jp> writes:
> This small patch improves the performance of INSERT and UPDATE. By my
> machine, these changes raised the performance about 5%~10% in pgbench.
BTW, in profiling the backend I've never seen PageAddItem take more than
about 1% of the runtime, and in pgbench in particular it seems to be
down around 0.1% ... so the above seems a bit optimistic ...
regards, tom lane