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Em 08/04/2012, às 15:26, Pandu Poluan <pandu@××××××.info> escreveu: |
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> I've deployed more than 20 Gentoo servers over VMware and XenServer, no performance issues. |
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> From the top of my head, Some pointers when doing menuconfig: |
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> * Go "tickless" |
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> * Activate the relevant paravirtualization code; choose the hypervisor-friendly suspend instead of spinlock |
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> * Use the paravirtualized storage driver (Vmware PV-SCSI or Xen Block FrontEnd) |
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> * If using hardened, first configure for "virtualization", exit (and save), menuconfig again, and check the options under GrSec and PaX; there are options that will cause performance penalty when run on top of a hypervisor (see the help text) |
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> * Do not compile *any* unnecessary drivers (e.g., wireless support, exotic devices) |
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> * Use I/O without delay |
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> And, deployment-wise : |
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> * When possible, do not create more than one partition per virtual drive; instead, create 1 virtual drive per filesystem mountpoint. E.g. : |
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> Instead of having /dev/sda{1,2,3,4} for /boot, /, /usr, and /home, respectively, create 4 virtual drives instead. The above mointpoints will then respectively map to /dev/sd{a,b,c,d}1 |
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> (The reason for the latter is because partitions get handled by the VM (slower), while accesses to virtual hard disks are handled by the hypervisor (faster)). |
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> I don't have access to my Gentoo systems ATM, so I can't provide a more detailed guide. |
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Pandu, |
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Please provide more information if you can, like kernel config for XenServer guest. I always have problem to do that with Gentoo and I'm using CentOS because of that. |
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Thanks in advance. |
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Regard, |
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Eduardo Schoedler |