[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-users] RAID10 Array
Hi! > I just ran Bonnie and timed DD on a couple of Linux VMs whilst running Sandra > on couple of Windows VMs and coincide them to roughly finish at the same time. > Whichever setup provided decent all round results whilst all were running > would > be my choice. The scheduler selection in Dom0 also affected disk performance a > fair bit. Hmm... basically bonnie and dd is a good choice -- but you'll only measure performance in MBps which is not the best choice for network storage. Using IOPS -- Input/Output Operations per Second -- is way more what you want. You may use "iostat" on existing servers to get an idea of what your current workloads are (tps corresponds to IOPS). > Testing first on the local arrays and tweaking the raid controller settings > and > driver along with local IO cache settings would be your first step. Then team > up your NICs and use something like iperf to tweak your MTU and other settings > for max bandwidth. Then do the same IOZone tests from a Dom0 using ISCSI and > try to optimise your ISCSI as best you can. Lastly test from the VM and > optimise the Xen config as best you can. Splitting the above tasks will allow > you to work on one area at a time and aim any questions you might have at the > correct mailing list / forum for each one. Just a perfect description on what to do: step-by-step and structured! -- Adi _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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