...@firstenergycorp.com
Para: ADSM-L@VM.MARIST.EDU
Enviado: Jueves 12 de marzo de 2015 12:18
Asunto: Re: AIX large pages with TSM
Later versions of AIX have two larger page sizes available and so the
number of locks to be taken and released drops dramatically for the
typical 256KB tape transfer.
This is what
Richard
I just edit a copy of the rc.dsmserv script. As I recall I had to
anyway as there was an error in it, something to do with setting the
home directory under AIX.
I just added the LDR_CONTROL variable to the line where dsmserv is
invoked.
On 19/03/2015 12:13 AM, Rhodes, Richard L. wrote:
I've been experimenting with LARGE PAGES. At this time I've just been trying
to get a TSM instance to come up with 64k pages. I'll play with 16mb pages
later.
This WORKS - manual startup after changing to the db2 owner.
Su - tsmuser (db2 owner)
: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of
Rhodes, Richard L.
Sent: 18 March 2015 13:14
To: ADSM-L@VM.MARIST.EDU
Subject: Re: [ADSM-L] AIX large pages with TSM
I've been experimenting with LARGE PAGES. At this time I've just been trying
to get a TSM instance to come up with 64k
At least on x86, there's also a benefit in having smaller page tables.
In particular, it makes the job of the TLB a lot easier for large memory
systems.
On 03/12/2015 03:59 AM, Steven Harris wrote:
Hi Andrew
The original reasoning on AIX was that as the data is transferred to
tape AIX gets a
Later versions of AIX have two larger page sizes available and so the
number of locks to be taken and released drops dramatically for the
typical 256KB tape transfer.
This is what I'm really confused about, and our AIX admins don't have an answer.
Our Power systems with AIX supports 4k, 64k and
On Wed, Mar 11, 2015 at 12:20:42PM -0400, Andrew Galloway wrote:
We have 2 TSM 6.3.5 servers running on zLinux. Is this something we could
leverage?
__
Andrew Galloway
Operational Systems Continuity Analyst
SSC RCMP Technology Directorate
CIO Building C1035
Hi Andrew
The original reasoning on AIX was that as the data is transferred to
tape AIX gets a spin lock on each 4k page and then has to release it,
so that a system using tape heavily spends quite a lot of CPU
acquiring and releasing locks.
Later versions of AIX have two larger page sizes
We have 2 TSM 6.3.5 servers running on zLinux. Is this something we could
leverage?
__
Andrew Galloway
Operational Systems Continuity Analyst
SSC RCMP Technology Directorate
CIO Building C1035
R.C.M.P. Headquarters
1200 Vanier Parkway
Ottawa ON
K1A 0R2
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
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 +, Rhodes, Richard L. wrote:
I've been in meetings/training this
Yep implemented this on my new v6 servers. Seems to work as
advertised. They aren't CPU stressed enough yet to see any real
difference though.
Regards
Steve
Steven Harris
TSM Admin, Canberra Australia.
On 11/03/2015 10:15 PM, Rhodes, Richard L. wrote:
I've been in meetings/training this
Harris
Sent: 11 March 2015 12:14
To: ADSM-L@VM.MARIST.EDU
Subject: Re: [ADSM-L] AIX large pages with TSM
Yep implemented this on my new v6 servers. Seems to work as advertised. They
aren't CPU stressed enough yet to see any real difference though.
Regards
Steve
Steven Harris
TSM Admin
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