Re: profiling connection overhead

Peter Eisentraut <peter_e@gmx.net>

From: Peter Eisentraut <peter_e@gmx.net>

To: Tom Lane <tgl@sss.pgh.pa.us>

Cc: Jeff Janes <jeff.janes@gmail.com>, Andres Freund <andres@anarazel.de>, Robert Haas <robertmhaas@gmail.com>, Bruce Momjian <bruce@momjian.us>, pgsql-hackers@postgresql.org, Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>

Date: 2010-11-30T19:37:13Z

Lists: pgsql-hackers

On mån, 2010-11-29 at 13:10 -0500, Tom Lane wrote:
> Rolling in calloc in place of
> malloc/memset made no particular difference either, which says that
> Fedora 13's glibc does not have any optimization for that case as I'd
> hoped.

glibc's calloc is either mmap of /dev/zero or malloc followed by memset.