> > How much RAM do you have?
> >
> > A good rule of thumb is to use 1-1.5G for maps and 2G per reduce
> > (vmem). Ensure your OS has at least 2G of memory.
> >
> > Thus, with 24G and dual quad cores you should be at 8-10m/2r. Scale
> up
> > if you have more memory.
>
> Would you say RAM was the m
Thanks Arun,
On Mon, Nov 14, 2011 at 4:34 AM, Arun Murthy wrote:
> How much RAM do you have?
>
> A good rule of thumb is to use 1-1.5G for maps and 2G per reduce
> (vmem). Ensure your OS has at least 2G of memory.
>
> Thus, with 24G and dual quad cores you should be at 8-10m/2r. Scale up
> if you
How much RAM do you have?
A good rule of thumb is to use 1-1.5G for maps and 2G per reduce
(vmem). Ensure your OS has at least 2G of memory.
Thus, with 24G and dual quad cores you should be at 8-10m/2r. Scale up
if you have more memory.
Also, ensure you turn on memory monitoring so that a rouge
Hi All,
We have been using dual socket quad core machines for a while and have
been running with 8 mappers 2 reducers. The rule of thumb we heard was
slightly oversubscribe the number of cores but at Hadoop World several
people said other things.
Some new machines we are moving to have 2 socket 6
