On Wed, Apr 4, 2012 at 6:37 AM, demerphq <demer...@gmail.com> wrote: > On 4 April 2012 09:31, William A. Rowe Jr. <wr...@rowe-clan.net> wrote: >> >> When was the last time you built perl with no threading support? It's >> certainly a 5%-15% win. > > Not certainly. We did that and saw almost no difference.
I've done two perlbench sets of comparisons with threaded/non-threaded across a couple different versions of perl. I don't have the results posted on the web anymore, but non-threaded was up to 20% faster for some operations. As far as real world differences go, I don't think you are likely to see differences with mod_perl in production environments with threaded vs non-threaded. That 20% increase probably only affects 1% of your application.
