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Re: [Xen-users] very slow disk access

To: "Fajar A. Nugraha" <list@xxxxxxxxx>
Subject: Re: [Xen-users] very slow disk access
From: Randy Katz <rkatz@xxxxxxxxxxxxxxxxxxxxx>
Date: Sat, 26 Feb 2011 17:16:29 -0800
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On 2/26/2011 4:41 PM, Fajar A. Nugraha wrote:
On Sat, Feb 26, 2011 at 11:20 PM, Randy Katz
<rkatz@xxxxxxxxxxxxxxxxxxxxx>  wrote:
# lsmod | egrep "piix|hci"
ahci                   69705  7
ata1: SATA max UDMA/133 abar m2048@0xff970000 port 0xff970100 irq 253
ata1.00: ATA-8: ST31500341AS, CC1H, max UDMA/133
ata1.00: configured for UDMA/133
A quick glance seems to show no driver problems. Did you experience
any problem? Is your problem xen-specific?

I have very slow access in Xen for file based access. If I use LVM volumes it is quite fast. Using the same machine with OpenVZ has no problems and performance is great. Will go ahead and use LVM volumes and assume Xen likes them! :) Not sure what
else to do or look at, any comments?


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