A litmus check request

[RW]

On Mon, 08 Sep 2014 15:37:36 -0600
Dave Babb wrote:

> I am about to do a lot of compiling. My copy of FreeBSD10.0 x64 P7
> runs on a 1TB Samsung EVO. I used wblock's excellent articles to set
> it all up so that trim was utilized.
> 
> I am asking that someone please review this attached fstab and
> validate for me, that at no time will any compilation intermediate
> files, or ".o" files will be written to the SSD. I am trying to
> protect the SSD.



If you haven't already done so I'd suggest you have a look at the
output of smartctl -a <device>   (from sysutils/smartmontools) and see
if Samsung have added an attribute to track total writes into the NAND
flash. 

I recently installed an SSD, and found buildworld produced 6 GB
of writes and buildkernel a further  6 GB.  It's a substantial
overhead, but not ruinous if you occasionally want to install world by
rebooting into single-user mode.  An alternative might be to build with
MAKEOBJDIRPREFIX set to /tmp/obj and then copy /tmp/obj to /usr/obj.