Thanks for the reply. I'm going to roll back to boost 1.47 until I can more fully investigate my build environment. Cheers, Gary -----Original Message----- From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of John Maddock Sent: Monday, December 19, 2011 10:24 AM To: boost-users@lists.boost.org Subject: Re: [Boost-users] [Regex] anyone seeing performance dip w/regex matching moving from 1.47->1.48 w/gcc?

I just pulled down boost regex 1.48 and built it with gcc 4.3 on CentOS 5.5. My internal regex performance tests are showing > 30% performance degradation between versions 1.47 and 1.48. I wanted to ask if anyone else has seen anything like this?

We've been using the same makefile to built boost regex for a long time, and we haven't converted to bjam. So I am wondering if this could be due to our particular build environment?

I doubt it, but more to the point, I don't think there were any significant changes between those version, John. _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users To report this as spam, please forward to spam@websense.com. Thank you. Protected by Websense Hosted Email Security -- www.websense.com