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Re: if-conversion a performance bottleneck
- To: Mike Stump <mrs at windriver dot com>
- Subject: Re: if-conversion a performance bottleneck
- From: Richard Henderson <rth at cygnus dot com>
- Date: Thu, 4 May 2000 22:35:29 -0700
- Cc: lucier at math dot purdue dot edu, gcc at gcc dot gnu dot org, matzmich at cs dot tu-berlin dot de
- References: <200005050531.WAA13920@kankakee.wrs.com>
On Thu, May 04, 2000 at 10:31:59PM -0700, Mike Stump wrote:
> Unfortunately -j3 gives you not three jobs, but an exponential cascade
> of 3 jobs per recursive make level.
I know. But 3 or 15 is still a lot better than 1000, which might
be what you get with just -j.
> I found that -j3 -l10 will at least try and limit them from expanding
> too much, which is useful if your swap limited (just how did those 2
> emacen grow to be 60M each, and netscape inflate to 90M? :-().
That's what gigabytes of RAM are for. ;-)
r~