Marcy,
Good suggestions. Alas:
1) The app doesn't use java, and
2) The customer refuses to run prime the pump-type scripts because they claim
it would just mask the problem
Mark
Date: Thu, 17 Mar 2011 15:47:12 -0500
From: marcy.d.cor...@wellsfargo.com
Subject: Re: Where is kernel
Mark,
That's an excellent suggestion, inasmuch as we have a couple dozen of these
servers running and, if nothing else, sharing code could reduce overall demand
for memory. Obviously, the bigger win would be if this is the code that is
actually being paged in and causing the delays, since by
You get a double benefit from XIP. Not only is the content shared by all
guests (so if just one guest is using it, CP has already paged it in), but
from the Linux perspective it is point and shoot. (That's why they call
it execute in place. But you knew that.) Ordinarily, programs have to be
I was reminded off-list by someone who knows WAS better than I do that
unzipping of JAR files renders content sharing moot. Sad, but true.
JIT does the same thing.
So ... I am a huge fan of XIP, and we should all use it more. But we
still have opportunities in all application areas.
Even when
Quote: The larger problem is going to be getting buy-in from the app owner
to implement such a thing.
Actually, all you need to do is _install_ it on subject file system.
There's nothing on the implementation side that needs to be done for it.
with kind regards
Carsten Otte
IBM Linux Technology
On 3/18/2011 at 08:29 AM, Mark Wheeler mwheele...@hotmail.com wrote:
The larger problem is going to be getting buy-in from the app owner to
implement such a thing.
Why would they care? Do they have an issue when you move their DASD to a new
storage array at lease expiration time?
Mark
We just had a surprise announcement by one of the Oracle DBAs during a
zLinux Application group planning meeting at our worksite. The DBA
advised us that they (Database group) were going to move/migrate all the
Oracle databases that we have on zLinux boxes off to an intel/unix
platform. He did
We are about to put into production, once we have gotten our multipath
(failover) issues resolved with EMC, Oracle 10. We had to step back to SLES 10
SP3+ due to Oracles glacial speed with certification of Oracle 11 on zLinux.
Also, the application only runs on Oracle 10, I imagine for the same
Date: Fri, 18 Mar 2011 14:19:28 +0100
From: co...@de.ibm.com
Subject: Re: Where is kernel loaded in memory?
To: LINUX-390@VM.MARIST.EDU
Quote: The larger problem is going to be getting buy-in from the app owner
to implement such a thing.
Actually, all you need to do is _install_ it
Is it possible to trigger a bogus transaction say, an hour before your first
transaction is usually executed?
We had a similar problem with CICS back in the '90s. The transaction did a
call (a no no back in CICS 1.7) to an external routine which did a lot of
paging and a lot of I/O to
On 3/18/2011 at 03:14 PM, Mark Wheeler mwheele...@hotmail.com wrote:
1) The app owner does the install so there's no hiding it from them
It's going to look just like an EXT2 file system to them.
2) The filesystem is 10 GB, which exceeds the DCSS max (unless we were to
string several
wow, your DBAs have the authority to spend that kind of money and make
that kind of change without management signature? So no financial
analysis, no technical reason, sounds religious.
CHAPLIN, JAMES (CTR) wrote:
We just had a surprise announcement by one of the Oracle DBAs during a
zLinux
Found a problem today with CP QUERY command that caused our Linux Server
to reboot.
Using vmcp from a zLinux server, I issued the following command:
vmcp q dasd | less
Binary file (standard input) matches
Error: output (21282 bytes) was truncated, try --buffer to increase size
inline: graycol.gifinline: pic26058.gifinline: ecblank.gifattachment: BARTON.vcf
On Fri, Mar 18, 2011 at 9:11 PM, Mark Post mp...@novell.com wrote:
On 3/18/2011 at 03:14 PM, Mark Wheeler mwheele...@hotmail.com wrote:
1) The app owner does the install so there's no hiding it from them
It's going to look just like an EXT2 file system to them.
2) The filesystem is 10 GB,
It's government, what do you expect ;-)
James Chaplin
-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of
Barton Robinson
Sent: Friday, March 18, 2011 5:03 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Moving Oracle off zLinux boxes -- comments from the
Value for your dollars, OMG, silly me, you said government forget that.
Doesn't happen
William 'Doug' Carroll
-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of CHAPLIN,
JAMES (CTR)
Sent: Friday, March 18, 2011 5:19 PM
To:
On Friday, 03/18/2011 at 05:07 EDT, CHAPLIN, JAMES (CTR)
james.chap...@associates.dhs.gov wrote:
But I thought I would try the same command from the guest console (#CP Q
DA), and got the following response just before the server rebooted:
DASD 4886 ON DASD 4886 R/W VI1304 SUBCHANNEL = 014C
My biggest problem is that I have no way to recreate the problem without
impacting our production.
The vmcp command is at a level of protection against this problem. But
what we want to understand is why would a simple #CP Q DA bring down the
guest linux? You should have seen my face as I
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