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On Sat, May 26, 2012 at 10:17 PM, Dale <rdalek1967@×××××.com> wrote: |
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> Neil Bothwick wrote: |
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>> On Sat, 26 May 2012 22:08:48 +0200, Jarry wrote: |
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>> |
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>>> I suppose default size for tmpfs is half of physical memory, |
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>>> if it is not configured somewhere else. |
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>> |
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>> It is, but that is the default maximum size, a tmpfs filesystem uses |
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>> only as much memory as its contents require. |
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>> |
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>>> BTW, is there any way to turn this great feature off? |
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>>> What is it good for? I do not see any advantage in having |
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>>> /run on tmpfs... |
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>> |
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>> It makes sure that /run is available and writeable early in the boot |
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>> process, whereas /var/run may not be and / may be mounted ro. |
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>> |
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>> |
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> |
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> |
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> Mine wouldn't be since I have /var on a separate partition. I guess the |
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> devs are getting ready for the ultimate screwup udev and friends is |
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> putting in place. Oh well. This is life. |
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TBH, there are other occasions for / to be read-only. LiveCDs, for |
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example, where your entire filesystem is (at least initially) R/O. A |
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read-only network filesystem (or disk image) mount in thin clients. |
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That kind of thing. |
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|
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> |
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> I just hope it never goes bonkers and tries to use half my ram. lol If |
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> it did that while compiling LOo, that could be interesting. :/ |
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tmpfs specifically allows pages in it to be swapped out to disk, so if |
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you have a large amount of swap, you shouldn't have a problem. |
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FWIW, I try to avoid swap on my servers, but I try to keep my desktop |
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and dual-role boxes with at least 1xRAM in SWAP, just in case I |
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someday decide to experiment with suspend-to-disk. I rarely (if ever) |
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touch it, but it's there if I need it. |
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|
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-- |
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:wq |
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