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On Mittwoch 06 Mai 2009, Mark Haney wrote: |
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> Duncan wrote: |
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> > Consider pointing PORTAGE_TMPDIR at a tmpfs. |
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> > |
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> > The idea is based on the fact that everything portage does in its tmpdir |
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> > (/var/tmp by default) is temporary, erased as soon as it's done emerging |
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> > that package. Since tmpfs uses swap backed memory, worst-case, it has to |
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> > write to swap -- that is, to disk, which is where it would otherwise be |
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> > writing ALL the temporary files. With memory access so much faster than |
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> > disk access, every file that's erased before it hits disk saves time, and |
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> > it can make a BIG difference in emerge times. |
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> |
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> Duncan, you talk about tmpfs and I'm suddenly interested in trying this |
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> out. My question is, how much space do you allocate for the tmpfs? I |
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> know it'll fall back to swap if I'm out of space there, but what works |
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> well for you? I have (currently) 1GB RAM on this system, but I'm |
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> getting ready to order more to get me to 4GB. |
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2gb. That is enough for almost everything. Not enough for openoffice. |
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tmpfs 2,0G 3,2M 2,0G 1% /var/tmp/portage |
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tmpfs 1,0G 116K 1,0G 1% /tmp |
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