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List:       xen-users
Subject:    Re: [Xen-users] Disk IO tuning
From:       Florian Heigl <florian.heigl () gmail ! com>
Date:       2011-12-29 1:12:32
Message-ID: CAFivhPk0c7bvfTrNkKjZNDzujd9R4+ZRXD1L8V91c-JGs4H6Xw () mail ! gmail ! com
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2011/12/28 Andrew Wells <agwells0714@gmail.com>:
> So I was looking over the boot of a pv system, and I saw this:
>
> ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=xx
>
>
> is it smart to change this value to gain speed to IO?

That should only affect the old "IDE" device driver.
The disks in a PV domU should be handled by the PV driver "xenblk",
the IDE driver will just be idle and doing nothing (unless you use PCI
delegation and add a real IDE Controller + Disk to the VM :)

Flo

-- 
the purpose of libvirt is to provide an abstraction layer hiding all
xen features added since 2006 until they were finally understood and
copied by the kvm devs.

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