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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: mmap
Date Thu, 15 Jul 2010 23:19:04 GMT
On Thu, Jul 15, 2010 at 5:46 PM, Clint Byrum <clint@ubuntu.com> wrote:
> One other approach that works on Linux is to use HugeTLB. This post details the process
for doing so with a jvm:
>
> http://andrigoss.blogspot.com/2008/02/jvm-performance-tuning.html
>
> Basically when mmapping using HUGETLB you don't have to be root, but your memory ends
up being effectively locked, so that would prevent the swapping, and might have the added
bonus of slightly faster memory allocation/access.

Very interesting!  That could be the simplest approach for us.

-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support
http://riptano.com

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