speed up port compiling using RAM (tmpfs) ???

Gary Thorpe gthorpe at myrealbox.com
Thu Jan 19 14:32:37 PST 2006


Ashok Shrestha wrote:
> I mounted part of RAM as such:
> 
> mdmfs -s 500m md /mnt
> 
> Then put WRKDIRPREFIX=/path/to/md in /etc/make.conf.
> 
> It substantially reduces compile time by about 5-10 times.
> 
> 
> Thanx to all ur replies.
> 
> -Ashok Shrestha

An alternative is to try using the "-pipe" flag with GCC: this 
eliminates the need to use some temporary files by using a unix pipe for 
IPC. Setting another flag "-j 2" will allow 2 jobs to be done at the 
same time and should eliminate (by hiding) the I/O delays (this slows 
down the CPU slightly because of more task switches, but even with one 
job there are still lots of generated tasks).

If you combine these, you should see your compilations becoming CPU-bound.


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