[gentoo-amd64] Emerge and Tmpfs

[Frank Peters]

After reading through the thread on this list about the benefits
of mounting PORTAGE_TMPDIR as tmpfs, I decided that I will be doing
this mount from now on.  My total RAM is 4G, but since I only "emerge world"
about once per week, I can easily set aside temporarily 2G or more for this
purpose.

However, after doing some more reading, I find that some people recommend
mounting tmpfs using the option nr_inodes=1M, while others just accept
the default value for nr_inodes.

To me, setting maximum inodes to 1M seems a bit high.  Can emerge actually
generate that many temporary files?  Would it be safer and also avoid swapping
to set nr_inodes=1M or is the default good enough?.

Frank Peters