Greetings; (Posted to VMESA-L and VSE-L and LINUX-390)
- - Now in its sixth year! - - Includes VSE and linux/390!
I have set up a public service web page at
http://www.eskimo.com/~wix/vm/
for posting positions available and wanted for VM, VSE and linux/390.
Please visit the web
Vic, my name is Eric Rossman, and I am the author and maintainer of
z90crypt. Could you send the debug log to me directly? I will take a look
at it.
Eric Rossman
ICSF Cryptographic Security Development
z/OS Enabling Technologies
[EMAIL PROTECTED]
Vic Cross [EMAIL PROTECTED] on 11.12.2003 06:29
A couple of things to consider - Linux does not write
to the device. It writes to the page space, then the
page manager, driven by bdflush, writes to the device.
So you would not expect as high a performance under
Linux as you would for MVS.
I/O is backed up behind a single subchannel to a
single
I have played with autoyast and quickstart on intel
installs a bit.
On s/390, there is no nice splash screen to announce
your intentions. Logging on during the install process
immediately invokes anaconda for both distributions.
Assuming the configuration files for intel and s/390
are similar,
Interesting thought, but the cpu it never 100% utilized when the testing
is taking place. At the higher end testing (21 to 24 dbench clients) it
gets up there around 80%.. but never 100%.
- Jason Herne
On Wed, 2003-12-10 at 21:07, Barton Robinson wrote:
I would say your two questions are very
Nope, the DASD is Ficon attached with 2 channel paths.
- Jason Herne
On Thu, 2003-12-11 at 05:15, Vic Cross wrote:
On Tue, 9 Dec 2003, Jason Herne wrote:
Linux is using a single 3390 DASD with ext3.
If this 3390 is ESCON-attached, 17MB/s (megaBytes/sec) is the absolute
maximum data
Since I don't maintain the ESS-800, I'm not 100% sure how it's set up or
how to set it up. Can you point me to some documentation describing how
the ESS-800 works and how I could squeeze as much performance out of it
as possible? Then maybe I could go to the guys responsible and ask for
their
If a device/controller queue is building with the I/O requests, the
fastest path in the world is still going to perform like a dog. Try
setting up the test disk with a striped logical volume. If you do this,
the results would be good to post.
On Wed, 2003-12-10 at 11:02, Jason Herne wrote:
There is info in a redbook (I think Linux Distributions) on how to set
up LVM. As to ESS doc, I'm not sure that's going to help. You will
need to contact someone that maintains the Shark at your shop and ask
them to give you volumes on seperate arrays. Each array is typically
defined as a
Since IBM has Acquired Informix, is the RedBrick data warehouse going to be
made available on Linux for zSeries?
\|/
(. .)
__ooO-(_)-Ooo__
Larry Davis
Nielsen Media Research
Mailto:[EMAIL PROTECTED] Mailto:[EMAIL PROTECTED]
VM Serving the Enterprise
Ok, you convinced me that your DASD performance problem
was really a CPU problem. If your processor hit 80%,
then the absolutely best case would be 25% more work for
the run that hit 80%. You are very much limited by the
processor speed.
Your processor could only reach 100% if the overlap
Jason,
Try these redbooks (the first may fit your needs the best):
http://publib-b.boulder.ibm.com/Redbooks.nsf/9445fa5b416f6e32852569ae006bb65f/976141a6c4ab8de788256cbc000414e8?OpenDocumentHighlight=0,ess
http://publib-b.boulder.ibm.com/Redbooks.nsf/RedbookAbstracts/sg246424.html?Open
I'm now trying to add packages to Red Hat EL 3.0 AS after having installed it. I'm
using VNC client to connect and run the KDE desktop. After selecting the (very
Windows like) Add/Remove Applications icon, I get the panel Package Mangement,
Add or Remove Packages. Without stopping the
If CPU capacity is truly limiting you, you should look into connecting to
native fibre channel disk if it is practical. Since you are using FICON,
you definitely have the capability in the CPU, so the issue would whether it
would be practical to convert some of your ESS interfaces and disk images
I am trying to add CD#2 to my Source of Install on my SLES8 SP2 system,
so that I can apply SP3.
I have the CD#1 iso mounted to /mnt
and the CD#2 mounted to /mnt2
I am trying to add local dir /mnt2 and get:
Unable to create form URL dir:///mnt2 InstSrc:E_no_instsrc_on_media.
What am I
Many thanks to all for your help and ideas-
The winning ticket was Ms. Huck, with a link to this gem:
http://www10.software.ibm.com/developerworks/opensource/linux390/docu/lx24jun03dd02.pdf
Check out Chapter 20, I have to remember that IBM does some good
stuff on DevWorks with Linux
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