[Gluster-users] GlausterFS guest machine I/O is too slow...

[Punit Dambiwal]

Can any one help me here.... ???

On Fri, Dec 5, 2014 at 4:47 PM, Punit Dambiwal <hypunit at gmail.com> wrote:

> Hi,
>
> I have the following setup :-
>
> 4* node in distributed replicated
> replica =2
> 24*brick in each node....
> i am using each brick as 256GB SSD...
> I have 2*10Gb lan with bonding for storage purpose
>
> As i am using SSD but still i am getting the very slow I/O  In my guest
> VM.....
>
> [root at centos7-2 ~]# dd if=/dev/zero of=/tmp/output bs=1M count=1k;rm -rf
> /tmp/output
> 1024+0 records in
> 1024+0 records out
> 1073741824 bytes (1.1 GB) copied, 12.9764 s, 82.7 MB/s
> [root at centos7-2 ~]#
>
> If i run the same command on the host it's around 561MB/s...
>
> [root at cpu04 10.10.0.6:_vol1]# dd if=/dev/zero
> of=/rhev/data-center/mnt/glusterSD/10.10.0.6:_vol1/output bs=1M
> count=1k;rm -rf /rhev/data-center/mnt/glusterSD/10.10.0.6:_vol1/output
> 1024+0 records in
> 1024+0 records out
> 1073741824 bytes (1.1 GB) copied, 1.91395 s, 561 MB/s
> [root at cpu04 10.10.0.6:_vol1]#
>
> Is there any way to optimize it for KVM virtulization....so i will get the
> best use of the SSD...
>
> Thanks,
> Punit
>
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