Hi Zoltan

Here is the reference... I know it is for TSM 7.1, but the reference is
specific to RHEL and it's filesystems, which is still relevant to the
discussion, I think:

http://www-01.ibm.com/support/knowledgecenter/SSGSG7_7.1.0/com.ibm.itsm.perf.doc/t_perf_diskos_lnx.html

Best regards,

Mike, x7942
RMD IT Client Services

On Thu, Jan 28, 2016 at 11:38 AM, Zoltan Forray <zforray AT vcu DOT edu> wrote:

> On Wed, Jan 27, 2016 at 10:05 AM, Ryder, Michael S <
> michael_s.ryder AT roche DOT com> wrote:
>
> > Did you follow the docs and disable RHEL's read-ahead
> > caching?  If so, you may want to consider enabling it.
> >
>
> Mike,
>
> Can you expand on your statement about RHEL read-ahead cache and some
> tuning/config document you refer to?   We were unaware of such a document
> (or config value).  The RHEL read-ahead cache is set to the default of
> 128K.  Currently all caching is via PERC.
>
>
> --
> *Zoltan Forray*
> TSM Software & Hardware Administrator
> Xymon Monitor Administrator
> Virginia Commonwealth University
> UCC/Office of Technology Services
> www.ucc.vcu.edu
> zforray AT vcu DOT edu - 804-828-4807
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