-Re: Performance of jBOD
Graeme Wallace 2013-10-03, 13:18
Its whatever dstat reports - i think it must be MBytes ?
On Wed, Oct 2, 2013 at 10:29 PM, Jun Rao <[EMAIL PROTECTED]> wrote:
> If you use a reasonable fetch size in the consumer (e.g. 100+KB) or above,
> you could probably get most of the sequential scan performance from those
> disks. Do you mean 250 Mbits or MBytes?
> On Wed, Oct 2, 2013 at 4:35 PM, Graeme Wallace <
> [EMAIL PROTECTED]> wrote:
> > We notice that we get a lot higher performance from Kafka up until the
> > point where disk reads are taking place. (which is to be expected as its
> > reading from filesystem cache).
> > However, given that we have 12x7200rpm SATA disks configured as jBOD -
> > sort of disk read performance should i see reported by dstat when things
> > are running flat out ?
> > I'm seeing 250-340Mb sustained.
> > --
> > Graeme Wallace
> > CTO
> > FareCompare.com
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