------- Additional Comments From paulthomas2 at wanadoo dot fr 2004-11-13 11:02 ------- Subject: Re: new/delete much slower than malloc/free because of sjlj exceptions
> Here's a test case for you... > -Ken That's interesting.... Using your test case: (i) gcc 3.2 20020927 ( prerelease) both versions take 0.62micro-sec/new (ii) gcc 3.1.1 (cygming special) I get 2.1 and 0.66micro-sec/new (iii) gcc 4.0.0 20041010 (experimental) I get 0.62 and 0.59micro-sec/new This latter was a tad unexpected - I built in from a snapshot on one of the German mirror sites. Does this imply that I have picked up Dwarf2 as a default? Going back to the beginning of this rather long thread, you will note that it was building octave that first exposed this problem. I think that octave is calling new too many times anyway, for certain types of code, and had started hanging counters on an overloaded new operator. It would not be a big deal to substitute your version and to compare the performance with THROW defined or not. Give me a few days, the build takes a few hours under Cygwin and I have some concreting to do this weekend.... *sigh* Regards Paul Thomas -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14563
