Kris Kennaway wrote:
On Thu, Jan 19, 2006 at 05:32:58PM -0500, Gary Thorpe wrote:
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).
-j is not safe to use with port builds since many ported software
contain race conditions in the build.
Kris
This effectively means that you cannot take advantage of SMP to compile
FreeBSD's ports collection. That sounds like a big
limitation...especially for people trying to speed up bulk builds.
Is "-pipe" still a good idea? It should provide a significant
performance boost, if the process is spending a lot of time doing disk
I/O, without using up a lot of memory.
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