ADSM-L

Re: [ADSM-L] AIX large pages with TSM

2015-03-11 09:03:20
Subject: Re: [ADSM-L] AIX large pages with TSM
From: Skylar Thompson <skylar2 AT U.WASHINGTON DOT EDU>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Wed, 11 Mar 2015 06:01:22 -0700
We've been using them on RHEL x86_64 via Linux's anonhugepages mechanism
for a while now. I'm not sure that they improve performance but they
certainly haven't hurt anything that I can tell.

On Wed, Mar 11, 2015 at 11:15:30AM +0000, Rhodes, Richard L. wrote:
> I've been in meetings/training this week about AIX LPM and other stuff 
> related with LPARS.  We got talking about our TSM servers, and the IBM leader 
> mentioned a presentation given a while ago at a IBM conference about using 
> LARGE PAGES (16MB) with TSM to prevent lock contention.  This is supposed to 
> help if you drive some large number of tape drives concurrently. He mentioned 
> one company that implemented this and saw a 20% increase in tape throughput.
>
> http://www-01.ibm.com/support/docview.wss?uid=swg21649823&aid=1
>
> I'm curious if anyone out there has heard of this and possibly implemented 
> large pages for TSM.
>
> Thanks!
>
> Rick

--
-- Skylar Thompson (skylar2 AT u.washington DOT edu)
-- Genome Sciences Department, System Administrator
-- Foege Building S046, (206)-685-7354
-- University of Washington School of Medicine