Its whatever dstat reports - i think it must be MBytes ?
On Wed, Oct 2, 2013 at 10:29 PM, Jun Rao <jun...@gmail.com> 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? > > Thanks, > > Jun > > > On Wed, Oct 2, 2013 at 4:35 PM, Graeme Wallace < > graeme.wall...@farecompare.com> 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 - > what > > 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 > > O: 972 588 1414 > > M: 214 681 9018 > > > -- Graeme Wallace CTO FareCompare.com O: 972 588 1414 M: 214 681 9018
