[CentOS] Measuring memory bandwidth utilization

Wed Feb 3 02:40:14 UTC 2016
Stuart Barkley <stuartb at 4gh.net>

On Tue, 2 Feb 2016 at 20:34 -0000, Benjamin Smith wrote:

> Any idea?

Wild guessing...How old a system?  ~5 year old Nehalem?  If so try:

    echo 0 > /proc/sys/vm/zone_reclaim_mode

For some memory performance diagnosing try 'sar':

    sar -B 10

There are lots of other sar options which might be useful.

I've never been lost; I was once bewildered for three days, but never lost!
                                        --  Daniel Boone