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Am Thu, 08 Feb 2018 19:11:48 +0200 schrieb gevisz: |
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> I never used tmpfs for portage TMPDIR before and now decided to give it |
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> a try. |
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> |
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> I have 8GB of RAM and 12GB of swap on a separate partition. |
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> |
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> Do I correctly understood |
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> https://wiki.gentoo.org/wiki/Portage_TMPDIR_on_tmpfs that I can safely |
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> set in the fstab the size of my tmpfs to 12GB so that the chromium could |
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> be emerged in tmpfs (using the swap) without the need to set |
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> notmpfs.conf for chromium and the likes. |
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> |
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> And I am going to set the whole /var/tmp/ on tpmfs instead of just |
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> /var/tmp/portage Is it ok? |
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I'm using systemd automounts to discard /var/tmp/portage when there is no |
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longer a user of this directory. It has one caveat: If you want to |
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inspect build problems, you should keep a shell running inside. |
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Here's the configuration: |
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$ fgrep portage /etc/fstab |
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none /var/tmp/portage tmpfs noauto,size=150%,uid=250,gid=250,mode=0775,x-systemd.automount 0 0 |
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$ cat /etc/tmpfiles.d/portage.conf |
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D /var/tmp/portage 0775 portage portage |
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x /var/tmp/portage |
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I used ccache before but building in tmpfs is much faster. |
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I'm currently experimenting with tuning vm.watermark_scaling_factor as the |
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kernel tends to swap storms with very high desktop latencies during package |
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builds which consume a lot of tmpfs. This is behavior I'm seeing since |
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kernel 4.9, worked better before. |
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As such, I think it makes most sense to put only /var/tmp/portage on tmpfs. |
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Programs may expect /var/tmp as being non-volatile over reboots. |
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-- |
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Regards, |
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Kai |
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Replies to list-only preferred. |
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