On Wed, Dec 16, 2015 at 06:00:10PM -0500, Michael McConville wrote:
Christian Weisgerber wrote:
On 2015-12-16, Tati Chevron <chev...@swabsit.com> wrote:
> Our couple of build machines are both fairly standard core i5 boxes
> with 16 gb of RAM, and Corsair SSDs. The RAM seems to make more
> difference than anything else, because you can set the work
> directory to a ramdisk, and do the entire build without touching the
> disk.
Have you done actual comparisons? With SSDs, I don't expect a
significant difference. (There is none for doing a "make build" of
the base system.)
FWIW: A few days ago, we added additional zeroing to tmpfs and were
discussing its performance. Another dev mentioned that their SSD is
already typically faster than tmpfs.
We have WRKOBJDIR on an 8 GB MFS partition, that uses half of the 16 GB
installed RAM.
An observation: we are not running a GENERIC kernel on these boxes, so
results will be skewed. In addition, one of the build machines is
running with softraid crypto on all of it's mounted filesystems. This
is for no reason other than to stress the softraid code.
--
Tati Chevron
Perl and FORTRAN specialist.
SWABSIT development and migration department.
http://www.swabsit.com
