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Yczo
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Joined: 09 Jul 2011
Posts: 225
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 Posted: Fri Dec 07, 2012 11:44 am Post subject: SSD and gentoo, ideas, opinion |
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It's widely known that the SSD are the future of hard disks. It's also known that those expensive drives, easily broken through repeated overwriting, something that we usually do through compile.
I propose that (for 8 Gbyte ram pcs or more), mount /var/tmp/portage/ on a ramdisk (I believe that the real time compiled data are stored there), and on this way avoid to rewritte on the SSD.
What do you think guys? |
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Hypnos
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Joined: 18 Jul 2002
Posts: 2889
Location: Omnipresent
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| Posted: Fri Dec 07, 2012 11:52 am Post subject: |
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Many people already do this, including me -- works fine.
There are numerous threads on this topic on the forums, if you want more details ...
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Yczo
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Joined: 09 Jul 2011
Posts: 225
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| Posted: Fri Dec 07, 2012 12:20 pm Post subject: |
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| upsss I'm sorry |
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Hexorg
Tux's lil' helper
Joined: 29 Oct 2009
Posts: 116
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| Posted: Sun Dec 16, 2012 3:30 pm Post subject: |
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Yep, I do the same. I started mounting /var/tmp/portage to ram a while ago before I got an SSD, it's supposed to increase compile speed by a little, although I never noticed the difference.
Also, aside from SSD I have 80.0GB harddrive, and 2TB harddrive, so I moved some other folders to harddrives:
| Code: | /dev/sdc3 15G 3.6G 11G 26% /usr/portage
/dev/sdc5 1008M 34M 924M 4% /tmp
/dev/sdc6 15G 993M 14G 7% /usr/src
/dev/sdc7 461M 13M 424M 3% /var/log
tmpfs 6.0G 0 6.0G 0% /var/tmp
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oh yeah, I moved /usr/src to the harddrive too because of kernel compilation. |
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asturm
Developer
Joined: 05 Apr 2007
Posts: 8935
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| Posted: Sun Dec 16, 2012 3:56 pm Post subject: |
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| I've got here a 512GB Crusial m4 SSD inside my notebook, so not a lot of choice (space) to outsource any kind of high-volatile data to an HDD, apart from /tmp and /var/tmp/portage that I had in a tmpfs all the time already. I searched around a lot for _the_ perfect SSD setup, but in the end decided to simply not care about it, format most of it with one big ext4 partition (to be able to make the most of it) and set the usual 'noatime', plus 'discard' option inside /etc/fstab. Works fine. SSDs these days are much more robust than their first generation, as long as you didn't choose one of the infamous OCZ drives. |
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indietrash
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dmpogo
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Joined: 02 Sep 2004
Posts: 3267
Location: Canada
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| Posted: Sun Dec 16, 2012 8:33 pm Post subject: |
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And it is done easily by setting
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PORTAGE_TMPFS="/dev/shm"
PORTAGE_TMPDIR="/dev/shm"
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in make.conf
I do it even on 4Gb laptop (and even did that when it was 2Gb laptop until this August) |
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_______0
Guru
Joined: 15 Oct 2012
Posts: 521
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| Posted: Tue Dec 18, 2012 1:39 pm Post subject: |
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| dmpogo wrote: | And it is done easily by setting
| Code: |
PORTAGE_TMPFS="/dev/shm"
PORTAGE_TMPDIR="/dev/shm"
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in make.conf
I do it even on 4Gb laptop (and even did that when it was 2Gb laptop until this August) |
That's it?? No need to create a directory in /tmp and add in fstab??
According to you I don't need this in fstab anymore:
| Code: | | tmpfs /tmp/temp tmpfs size=3G 0 0 |
mmm.. I'll try compiling firefox with pgo and see if it works. |
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tholin
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Joined: 04 Oct 2008
Posts: 203
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| Posted: Tue Jan 01, 2013 3:59 pm Post subject: Re: SSD and gentoo, ideas, opinion |
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| Yczo wrote: | | It's also known that those expensive drives, easily broken through repeated overwriting, something that we usually do through compile. |
That's really nothing you have to worry about on modern SSDs. The SSD I use now should last at least 4 years when doing constant 24h compiling to it, probably a lot longer. My two year old SSD that I recently switched out was still at 96% capacity and I used it for compiling, swap, tmp logs, FS logs and everything else. |
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