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On 21/04/2013 16:33, Tanstaafl wrote: |
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> Thanks for the reply Alan... |
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> |
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> On 2013-04-20 11:33 AM, Alan McKinnon <alan.mckinnon@×××××.com> wrote: |
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>> If VMWare gives you a really shitty host driver, then something |
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>> really shitty is going to be the best you can achieve. |
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> |
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> The host is a Dell R515 with the Perc H700. |
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> |
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> Windows VMs see get an 'LSI Logic SAS', and my gentoo VM gets an 'LSI |
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> Logic Parallel' controller. |
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> |
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> All disks are 15k rpm SAS (6G) drives. |
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That's very similar to our setups with the exception of the host |
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hardware - we have R700 series hosts. |
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I'd be interested to keep track of what you find out and feed that back |
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to the sysadmins |
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> |
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>> Disks aren't like eg NICs, you can't easily virtualize them and give the |
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>> guest exclusive access in the style of para-virtualization (I can't |
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>> imagine how that would even be done). |
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>> |
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>> You also didn't mention what mail server you use - implementations vary |
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>> a great deal. Gut feel tells me that unless you are dealing with many |
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>> 1000s of mails in a short period you won't really need XFS's aggressive |
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>> caching. |
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> |
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> Postfix+dovecot, still debating between maildir or mdbox, leaning toward |
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> mdbox. |
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I always found postfix to be the best choice for an MTA in the large |
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picture (mostly because everyone else can also figure out what's going |
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on). I'd also be testing mdbox first just because maildir always leaves |
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me feeling a bit like there's a little too much disk IO going on and it |
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could be better |
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-- |
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Alan McKinnon |
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alan.mckinnon@×××××.com |
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