Re: [gentoo-user] Re: /var/tmp on tmpfs

[gevisz <gevisz@gmail.com>]

2018-02-08 19:47 GMT+02:00 Nikos Chantziaras <realnc@gmail.com>:
> On 08/02/18 19:11, gevisz wrote:
>>
>> I never used tmpfs for portage TMPDIR before and now decided
>> to give it a try.
>>
>> I have 8GB of RAM and 12GB of swap on a separate partition.
>>
>> Do I correctly understood
>> https://wiki.gentoo.org/wiki/Portage_TMPDIR_on_tmpfs
>> that I can safely set in the fstab the size of my tmpfs to 12GB so
>> that the chromium
>> could be emerged in tmpfs (using the swap) without the need to set
>> notmpfs.conf
>> for chromium and the likes.
>>
>> And I am going to set the whole /var/tmp/ on tpmfs instead of just
>> /var/tmp/portage
>> Is it ok?
>
>
> If you're not using ccache, then you don't need /var/tmp to be on tmpfs. You
> should only put /var/tmp/portage on tmpfs.

Thank you for the reply.

I do not use ccache, and in my /var/tmp I only have /var/tmp/portage
and /var/tmp/genkernel (I use genkernel to generate initramfs image).

I never use emerge and genkernel at the same time. So, why not to put
the whole /var/tmp into one tmpfs?

> If you do use ccache, then you need to mount both /var/tmp and
> /var/tmp/portage as tmpfs. Although if you end up swapping, it's probably
> going to be slower than not using tmpfs. So unless you have something like
> 32GB of RAM, it might be best to use notmpfs.conf for Chromium anyway.
>
> (Although I didn't benchmark swap vs notmpfs.conf. Swap being slower than
> notmpfs.conf is just an educated guess.)