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Neil Bothwick wrote: |
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> On Thu, 06 Sep 2012 16:09:12 -0500, Dale wrote: |
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> |
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>>> Reading the tarball has nothing to do with this, we are discussing |
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>>> filesystems for PORTAGE_TMPDIR, not DISTDIR. It's where the source is |
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>>> unpacked, the object files compiled to, the executables linked to and |
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>>> the install image created that is relevant to TMPDIR. |
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>> Well, on my system, when I run emerge, it has to go read the tarball |
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>> from the drive before it can unpack and do all the rest that needs to be |
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>> done. |
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> Of course, but it is reading from a different filesystem that is |
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> unaffected by your choice for $PORTAGE_TMPDIR. It has about as much |
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> relevance as the brand of mouse you are using. |
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> |
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> |
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But whether it is on tmpfs or just regular memory doesn't matter. Once |
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emerge starts, everything is in ram including portages work directory |
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which would be on tmpfs here. That's why it doesn't matter if portage |
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is on tmpfs or not. Once emerge loads up the files, it's the same |
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thing. That's why using tmpfs doesn't matter. I knew that the whole |
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time. The amount of ram on a system doesn't matter either. If you have |
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a system that doesn't have a lot of ram, then you can't really use tmpfs |
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anyway. That is not something I would recommend to anyone. |
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I just don't agree that one should *disable* cache to run the test since |
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no one would disable cache on a normal system. It's not a memory speed |
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test. It's a test to see if putting it on tmpfs makes it faster. The |
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fact that emerge loads everything up in memory when it starts is not |
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relevant for what I am testing. It does that on its own anyway. |
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Since portage and the kernel does this in the most efficient way |
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already, I still say putting portage's work directory on tmpfs is not |
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needed UNLESS a person needs to save wear and tear on a drive, such as |
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the SSD in this thread. I just don't want someone that is sort of new |
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to Gentoo and compiling things to think that a package that takes 10 |
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minutes when done on disk will take 3 minutes when on tmpfs. I see that |
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thinking from time to time, usually on the forums. |
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Dale |
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:-) :-) |
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-- |
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I am only responsible for what I said ... Not for what you understood or how you interpreted my words! |
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