f Of Rob van der Heij
Sent: Saturday, May 02, 2009 9:32 AM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: SWAPGEN
On Sat, May 2, 2009 at 12:46 PM, Phil Smith III wrote:
> The pathological cases of "This guest runs away, real Swap DASD gives
me a chance to control it" are perfectly
On Sat, May 2, 2009 at 12:46 PM, Phil Smith III wrote:
> The pathological cases of "This guest runs away, real Swap DASD gives me a
> chance to control it" are perfectly valid, but don't contradict the statement
> that VDISK is better *for performance*; rather, they support it.
Let me show you
As one of the SWAPGEN authors, I've watched this discussion.
I'd note that Barton's original statement stands, in the context in which he
said it: VDISK has always provided better *performance* in every observed case.
The concerns about "using up real memory" have never been supported by the dat
hat' slow anymore.
Doug
- Original Message -
From: Scott Rohling
To: IBMVM@LISTSERV.UARK.EDU
Sent: Wednesday, April 29, 2009 18:13
Subject: Re: SWAPGEN
Maybe -- but having a real disk (and setting an alert for that) helps
isolate the issue to a single guest rather t
.edu] On
Behalf Of Barton Robinson
Sent: Thursday, April 30, 2009 9:44 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: SWAPGEN
make sure that your oracle SGA fits into your page cache. If it
doesn't, that will make you swap. Your ORACLE DBA ABSOLUTELY must be in
agreement on your conf
0386
terry.mar...@cms.hhs.gov
-Original Message-
From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On
Behalf Of Marcy Cortes
Sent: Thursday, April 30, 2009 8:41 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: SWAPGEN
You might want to take a look at vm.swappiness setting.
.UARK.EDU
Subject: Re: SWAPGEN
giving real disks to swap is a real waste of resource. It is much
better to take the "extra disk resource" that you allocate but never
want to use, and assign it to z/VM paging to enhance your paging
subsystem. Then define two vdisks for swap, prioriti
- 410 786-0386
terry.mar...@cms.hhs.gov <mailto:terry.mar...@cms.hhs.gov>
From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On
Behalf Of Scott Rohling
Sent: Wednesday, April 29, 2009 9:51 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: SWAPGEN
rry.mar...@cms.hhs.gov>
From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On
Behalf Of Scott Rohling
Sent: Wednesday, April 29, 2009 9:51 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: SWAPGEN
Right - I got that from Barton's post.
Cons
l 29, 2009 6:42 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: SWAPGEN
giving real disks to swap is a real waste of resource. It is much
better to take the "extra disk resource" that you allocate but never
want to use, and assign it to z/VM paging to enhance your paging
subsystem. T
On Thu, Apr 30, 2009 at 6:21 PM, Rich Smrcina wrote:
> Both ESALPS and the Performance Toolkit will show that an unused Vdisk will
> use very little storage. Even if you do manage to start using it, after a
> certain amount of time it is likely to get paged out if unreferenced long
> enough.
I checked to make sure that Barton hasn't answered before I started writing
this... :)
Both ESALPS and the Performance Toolkit will show that an unused Vdisk will use
very little storage. Even if you do manage to start using it, after a certain
amount of time it is likely to get paged out if u
now about performance fills lots of books...
literally!
"Scott Rohling"
Sent by: "The IBM z/VM Operating System"
04/29/2009 08:51 PM
Please respond to
"The IBM z/VM Operating System"
To
IBMVM@LISTSERV.UARK.EDU
cc
Subject
Re: SWAPGEN
Right - I got th
ERV.UARK.EDU <mailto:IBMVM@LISTSERV.UARK.EDU>
*Sent:* Wednesday, April 29, 2009 18:13
*Subject:* Re: SWAPGEN
Maybe -- but having a real disk (and setting an alert for that)
helps isolate the issue to a single guest rather than affecting
critical shared resources (in this
. DASD is not 'that' slow anymore.
Doug
- Original Message -
From: Scott Rohling
To: IBMVM@LISTSERV.UARK.EDU
Sent: Wednesday, April 29, 2009 18:13
Subject: Re: SWAPGEN
Maybe -- but having a real disk (and setting an alert for that) helps
isolate the issue t
Right - I got that from Barton's post.
Consider that there are times when using a real disk might make sense ..
I'm just not big on blanket statements... Dedicating a resource is not
always a big waste and does not always benefit one to the detriment of the
rest. It's a balancing act and it tak
The biggest benefit of z/VM is to virtualize resources as much as
possible. Dedicating a resource to a specific guest is a big waste and
benefits one to the detriment of all the rest. It would be much better
to allocate all virtual disk swap for the Linux guests, then allocate
the disk that w
Maybe -- but having a real disk (and setting an alert for that) helps
isolate the issue to a single guest rather than affecting critical shared
resources (in this case memory/paging) when a guest starts swapping more
than normal or than it 'should'.
I like the idea of having a 'failover' swap are
giving real disks to swap is a real waste of resource. It is much
better to take the "extra disk resource" that you allocate but never
want to use, and assign it to z/VM paging to enhance your paging
subsystem. Then define two vdisks for swap, prioritize them, and set an
alert when the 2nd di
On Apr 26, 2009, at 9:44 PM, Martin, Terry R. (LOCKHEED MARTIN
Performance Engineering/CTR) (CTR) wrote:
Hi
I am using SWAPGEN to define by z/Linux VDISKS I also want to define
a real disk for swap. My question is can I use SWAPGEN to define a
swap on real DASD? If you have an example o
>>> On 4/26/2009 at 10:44 PM, "Martin, Terry R. (LOCKHEED MARTIN
Performance Engineering/CTR) (CTR)"
wrote:
> I am using SWAPGEN to define by z/Linux VDISKS I also want to define a
> real disk for swap. My question is can I use SWAPGEN to define a swap on
> real DASD? I
CTED]
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of Adam Thornton
Sent: Friday, November 07, 2008 5:39 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: SWAPGEN not working for FBA
On Nov 7, 2008, at 4:30 PM, Martin, Terry R. (CMS/CTR) (CTR) wrote:
Hi
6-0386
[EMAIL PROTECTED]
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of Adam Thornton
Sent: Friday, November 07, 2008 5:39 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: SWAPGEN not working for FBA
On Nov 7, 2008, at 4:30 PM, Martin,
>>> On 11/7/2008 at 5:30 PM, "Martin, Terry R. (CMS/CTR) (CTR)"
<[EMAIL PROTECTED]> wrote:
-snip-
> 'SWAPGEN 900 524288 FBA'
Have you tried
'SWAPGEN 900 524288 ( FBA'
??
Mark Post
On Nov 7, 2008, at 4:30 PM, Martin, Terry R. (CMS/CTR) (CTR) wrote:
Hi
I am trying to use the SWAPGEN EXEC to create a FBA SWAP file by
adding it to the PROFILE EXEC of the Linux guest. However it seems
to keep taking the default of DIAG. Since I do not have the DIAG
drivers on my RedHat
Hello Adam,
Ah, nice. Both versions are available now. Thanks.
I have the vma-package. Indeed very nice and I use it very much.
Regards, Berry.
Adam Thornton schreef:
On Aug 7, 2008, at 4:28 AM, Berry van Sleeuwen wrote:
Hello List,
The past day I have tried to get the new version of SWAPG
Hi Dave,
The SWAPGEN creates the VDISK and the zLinux does accept the disk. But
swap is not activated on the disk. To activate the swap I have to issue
a mkswap before swapon. And after booting the guest it must be done again.
I don't know if it is a problem with swapgen, with linux or some f
Hi, Berry.
Adam Thornton wrote:
On Aug 7, 2008, at 4:28 AM, Berry van Sleeuwen wrote:
Hello List,
The past day I have tried to get the new version of SWAPGEN into my VM
but
no success so far. I have tried every way I can do a filetransfer but
every time I end up in a file I can't use on VM.
On Aug 7, 2008, at 4:28 AM, Berry van Sleeuwen wrote:
Hello List,
The past day I have tried to get the new version of SWAPGEN into my
VM but
no success so far. I have tried every way I can do a filetransfer but
every time I end up in a file I can't use on VM. Can anyone send me
the
VMARC-e
Rob van der Heij <[EMAIL PROTECTED]> wrote:
>I am concerned about the approach of teaching adults to "download and
>just run it to see what happens" That's one of the aspects that
>distinguishes us from the folks who close their eyes and do "Next,
>next, finish" and end up re-install their opera
On Jun 19, 2008, at 9:00 AM, Phil Smith III wrote:
Dave_de_Noronha wrote:
I am trying to download the SWAPGEN EXEC from the Sine Nomine
website and
cannot get it in a format we can use. I do not understand why it
is in
Mailable format. Can anyone please tell me how to do it or, if
possib
On Thu, Jun 19, 2008 at 4:26 PM, Michael MacIsaac <[EMAIL PROTECTED]> wrote:
>> What problem are you having?
I am concerned about the approach of teaching adults to "download and
just run it to see what happens" That's one of the aspects that
distinguishes us from the folks who close their eyes
> What problem are you having?
It would be nice to have some cookbook-style steps of how to use SWAPGEN
on the Web site. On http://www.sinenomine.net/products/vm/swapgen the only
"instructions" I see are:
"The VMARC file contains the updates to the module and control files, the
EXEC, the RXDASD
Dave_de_Noronha wrote:
>I am trying to download the SWAPGEN EXEC from the Sine Nomine website and
>cannot get it in a format we can use. I do not understand why it is in
>Mailable format. Can anyone please tell me how to do it or, if possible
>send me the code
What problem are you having? The p
-3541
-Original Message-
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of Dave de Noronha
Sent: Thursday, June 19, 2008 2:14 AM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: SWAPGEN EXEC
Thanks Fernando and DavidDave Jones sent me a VMARC version of
SWAPGE= N and it
Thanks Fernando and DavidDave Jones sent me a VMARC version of SWAPGE
N
and it is working fine.
To David Boyes :I tried what you suggested but when I Downloaded it to my
PC
then VM the file got mangled. I tried every possible way...maybe there i
s
something wrong on my PC, anyway am now work
It's in MAILABLE format because it's actually a package of several
files.
Download the MAILABLE file to your VM system. RENAME the file to
SWPG0803 EXEC and run it to extract the 11 encoded files. Use and
enjoy.
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