Bill Bitner said:
... many things ...
I'd completely ignore this post. It's obviously a forgery and
can't possibly be from who it's supposed to be. After all,
it doesn't have the words it depends in it.
Rod (cough,cough, it's Friday, cough, cough)
PLEASE PROVIDE A SUBJECT LINE of relevance I almost
ignored this and have no idea the original thread.
Isn't the problem with dcss is that they are very limited?
They must be less than 2GB in address - pretty hard to have
a 5GB pages space fit below 2gb virtual.
Lots of virtual machines
Hi Barton,
today you have a full 2G of space for dcsses available - even when using
lage main memory. You can use dcss
swapping with oracle, and all other apps you have in mind.
You can mix different swapping devices easily with Linux, you can even
priorize using them. When you need 500gig
of
On Nov 18, 2004, at 10:04 AM, Carsten Otte wrote:
Hi Barton,
today you have a full 2G of space for dcsses available - even when
using
lage main memory.
I may be confused, but I thought you had to define your DCSSes above
the top of the memory Linux used. What does the IPL line look like if
you
: linux swap to dcss?
On Nov 18, 2004, at 10:04 AM, Carsten Otte wrote:
Hi Barton,
today you have a full 2G of space for dcsses available - even when
using
lage main memory.
I may be confused, but I thought you had to define your DCSSes above
the top of the memory Linux used. What does
On Thu, 18 Nov 2004 11:20:48 -0500, David Kreuter
[EMAIL PROTECTED] wrote:
In the case of swapping to EW DCSS it would be a separate address space so
the rules are not the same as
the XIP2 type of mapped file system.
No you're wrong. The DCSS must be mapped into the virtual machine
address
Hi Carsten, i just don't believe that under stress conditions
that in today's environement you can show value to paging
to dcss over vdisk. This being with z/vm 5.1 and a current
redhat or suse.
The ibm recomendations i keep hearing being repeated are that
swap sizes must be some multiple of the
I may be confused, but I thought you had to define your DCSSes above
the top of the memory Linux used. What does the IPL line look like if
you want 100 MB at 1G, and space usable by Linux both above and below
it?
This issue has been solved. With our new memory detection you can use #cp
def store
In the case of swapping to EW DCSS it would be a separate address space
so the rules are not the same as
the XIP2 type of mapped file system.
David
Nope, you can do the same with xip2fs. You can create storage holes and
fill them with your filesystem.
with kind regards
Carsten Otte
--
omnis enim
On Thu, 18 Nov 2004 17:52:13 +0100, Carsten Otte [EMAIL PROTECTED] wrote:
Nope, you can do the same with xip2fs. You can create storage holes and
fill them with your filesystem.
For the oldbies among us - this is effectively what we did with CMS
and segment reserve, because we did not have def
Hi Carsten, i just don't believe that under stress conditions
that in today's environement you can show value to paging
to dcss over vdisk. This being with z/vm 5.1 and a current
redhat or suse.
Why don't you measure it? My simple measurements (I am not a performance
guy but
the developer)
So ibm would rather an outside vendor do the measurements?
and that any customer with performance problems should run
future or unsupported levels of code in production?
And that vm developement's opinions are better than real data?
my my.
Date: Thu, 18 Nov 2004 18:12:50 +0100
From:
-
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Barton
Robinson
Sent: Thursday, November 18, 2004 12:38 PM
To: [EMAIL PROTECTED]
Subject: Re: linux swap to dcss?
So ibm would rather an outside vendor do the measurements?
and that any customer with performance problems should run
So ibm would rather an outside vendor do the measurements?
and that any customer with performance problems should run
future or unsupported levels of code in production?
And that vm developement's opinions are better than real data?
my my.
You really seem to try hard to get me wrong. We are off
A few thoughts on various statements:
1.The Linux development process is a little different than
the traditional S390 where we test things ad nauseum before
we let them out the door. I apologize that VM Performance
hasn't had time to fully measure the swap to dcss. It's on
the list, but
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