Re: [squid-users] About Squid compilation gcc option

Most GCC versions have problems at -O2 already so I have my doubts.. and
-O3 is not guaranteed to give you faster code than -O2 (see your GCC
manual).

These GCC compilers are known to break Squid at -O2, but work fine if
optimization is disabled:

  2.7.2.3
  2.95.1
  2.95.2
  2.95.3

The performance gains from optimizing Squid with -O options are
marginal. The performance issues are at other levels than the compiler
can address.

Regardless, you should keep the -g flag, or else you won't be able to
diagnose any serious faults detected. -g does not impact performance
other than a a few milliseconds longer startup time.

Ronald wrote:
>
> Hi there,
> About Squid compilation option.
> Can i have the compilation option for squid2.4stable1 Linux 2.* like
> this,
> "gcc -O3 -Wall -I. -I../include -I../include..." instead of default
> "gcc -g -O2 -Wall -I. -I../include -I../include...".
>
> Does this make any performance improvement in the production system
> without pain?
>
> Thanks,
> Ronald.
Received on Tue Jun 05 2001 - 17:28:09 MDT