It depends on your distribution. Some distributions are more efficient at driving spindles than others.
Ratios as high as 2 spindles per core are sometimes quite reasonable. On Fri, Oct 12, 2012 at 10:46 AM, Patai Sangbutsarakum < silvianhad...@gmail.com> wrote: > I have read around about the hardware recommendation for hadoop cluster. > One of them is recommend 1:1 ratio between spindle per core. > > Intel CPU come with Hyperthread which will double the number cores on > one physical CPU. eg. 8 cores with Hyperthread it because 16 which is > where we start to calculate about number of task slots per node. > > Once it come to spindle, i strongly believe I should pick 8 cores and > picks 8 disks in order to get 1:1 ratio. > > Please suggest > Patai >
