This was in my share presentation today. I will have to look into how
standby processor information is provided or should be reported. This
shows the lpars, their processor types, and then it shows the activity
by processor type, so for the 37 active processors on this system, it
should be
would you be looking for something from a really good performance monitor:
Screen: ESAHST2 Velocity Software - VSIVM4 ESAMON 3.808 08/04
1 of 1 LINUX HOST Storage Analysis Report NODE R* LIMIT 500
-Utilization- -Storage--
If they happen to have ZVPS (ESALPS), that information is captured using
the TCPIP monitor records.
Kris Buelens wrote:
My customer want to see what IP addresses are still using FTP with his
z/VM system. Is there a simpler way than coding a CHKIPADR exit exec,
(or a NETSTAT every second like
I will take this opportunity to first agree with Dennis, (Thank you
Dennis) and say that for VSE installations running under z/VM, we have a
phenomenal offering called the ZVPS Starter Kit that won't break any
even little banks.
O'Brien, Dennis L wrote:
Velocity Software has an ESAFORCE
I might as well take this opportunity. Velocity Software has a new
offering, for installations just getting started.
The Starter Kit includes zVPS (the FULL Velocity Performance Suite)
and zTUNE for a VERY low (not free) price.
This provides the ability to completely monitor your z/VM, your
I would HIGHLY recommend talking to an installation who has actually
implemented VMRM PRIOR to you doing it. I don't think even IBM
recommends VMRM (ok maybe some sales types do). The problem is about
your ability to keep your servers from not crashing if you care..
Dave Jones wrote:
Hi,
When i do the analysis for 100% capture ratio, i add the physical
overhead, the logical overhead and the z/vm captured time. that works.
so vm must be lpar aware...
Gregg wrote:
On Fri, Feb 18, 2011 at 7:31 PM, George Henke/NYLIC
george_he...@newyorklife.com
and for linux servers with multiple cpus, you divide cputime by the
number of cpus?
Ackerman, Derek wrote:
Yes, and I always divide the CPU time by 1000.
-Original Message-
From: The IBM z/VM Operating System [mailto:IBMVM@LISTSERV.UARK.EDU] On Behalf
Of Bruce Hayden
Sent: Friday,
how you do the arithmetic relates to the problem you are trying to
solve
Rich Greenberg wrote:
On: Fri, Feb 18, 2011 at 11:05:07AM -0800,Barton Robinson Wrote:
} and for linux servers with multiple cpus, you divide cputime by the
} number of cpus?
Wouldn't it be closer to reality
Very few people understand the scheduler, and what it does - What it
does, it does very well. You just have to understand the language.
Rob did some recent experiments that validated how it works, and
validated how little functions like VRM really help your workloads
(except by accident).
For those of you interested in performance, or performance management of
your Linux and z/VM environment, our Performance Education schedule is
now posted for 1st half, at
http://velocitysoftware.com/seminar/index.html;.
Offerings are the 4 day workshop and 1 day seminars.
so i know sales people that could help you solve your problem
Wouldn't it be nice to tell your boss that you know what happened, it is
fixed and won't happen again?
Wakser, David wrote:
I’ll have to wait until it happens again! J
*From:* The IBM z/VM Operating System
And of course if you look at zpro, it does most of that as well as a
free option of a VERY inexpensive add on.
Tracy Dean wrote:
Since Mike mentioned CA's VM:Spool, I'll add my obligatory mention of IBM
Operations Manager for z/VM. It lets you view a list of files in the spool
(with owner,
I have multiple installations running Linux under z/VM where the z/VM
sysprogs are very overcommitted. Allowing them to offload work that CAN
be done by someone else makes them much more productive - as long as the
work assigned is controlled by an authorization mechanism.
Most of the work,
If you look at zpro (live system running many linux servers), at
vm2.velocitysoftware.com/zpro,
sign in with the userid and password provided, go to System status
then dasd, gets you our live dasd report. This user is of course
restricted, otherwise y'all would be seeing how bad you could hurt
Ok, Sorry George, I (who can type) find that offensive. The biggest
challenge the z/vm platform has to grow is lack of people that
understand 3270, or are even interested. Or do y'all want the platform
to die as us people that can type get old, retire? vmware is winning
the battle world wide
Ouch. Pretty costly to collect raw data, ship it to z/os and process it
there. There are lots of installations that take the zVPS (Velocity
Performance Suite) data and ship it to z/os from vm, and MXG supports it
direct. Probably 1 percent in size. Other installations take our MICS
file
Isn't it absolutely unbelievably amazing that in the current environment
with everything internet enabled, that z/vm is still stuck with 30
year old technology (CTC) to perform simple network functions? With no
change anywhere in the future? *$# unbelievable
Mark Pace wrote:
I see that
that like simple, and probably less money for those that care.
Alan Altmark wrote:
On Thursday, 09/30/2010 at 02:00 EDT, Barton Robinson
bar...@vm1.velocity-software.com wrote:
Isn't it absolutely unbelievably amazing that in the current environment
with everything internet enabled, that z/vm
Right, so even better chance that java on cms would be more than
acceptable. Too bad there's no business case.
John P. Hartmann wrote:
Barton, you overlook the lack of IEEE floating point in the hardware
in those days.
On 28 September 2010 04:08, Barton Robinson
bar...@vm1.velocity
I think the cms java performed very poorly could be revisited. back
then, the mainframe was at most 400Mhz? or less? of course it performed
poorly. so now the processors have caught up and surpassed and are
about an order of magnitude faster. This had nothing to do with
software, this was a
Gee Mike, you come to my class and don't learn nothen. the only thing
that storbuf does is hurt, turning it off is the only recommendation
that anyone ever gives. i look at this thread and
So, anyone reading this, IF YOU HAVE A PERFORMANCE PROBLEM, if you send
us z/vm monitor data, we
hehehehehehehe - good performance tools take care of this problem
David Boyes wrote:
Forwarded without comment.
User Group Number - WAVV201012
Document Status - Recognized
Title - MONDCSS is too small as shipped
IBM agrees with the request and a solution appears to be a desirable
Totally safe. Only users of the star monitor function will notice - so
the monitor does need to stop and start.
Dean, David (I/S) wrote:
Is it safe to change MONDCSS sizes on running system, i.e., I won’t run
over memory being used somewhere else?
David M. Dean
Information Systems
BlueCross
Have you looked at the TUNEFRC function, part of zVPS (Velocity
Performance Suite)?
Martin, Terry R. (CMS/CTR) (CTR) wrote:
Hi,
This may have been asked before but I was wondering the best way to
Automatically log off a CMS user after a designated time frame. This is
to address an
71788 542585
4 40 69580 1134k 6144M
Rob? Barton? Come on.
David M. Dean
Information Systems
BlueCross BlueShield Tennnessee
-
Please see the following link for the BlueCross BlueShield of Tennessee E-mail
disclaimer
I've looked at a lot of installations using vdisk - I've only once seen
an installation where vdisk seemed to be an issue - and that was when
the installation had followed the 2 vdisk for swap guideline, but
reversed the priority on the two disks and the larger one was used
instead of the
If you go to conferences such as CMG (Computer Management Group), that
has been a mainframe organization (meaning MVS or z/OS) since it
started, our VM has never been represented, but VMWare now has many
sessions. It's depressing to see 80 people in entry level performance
session for VMWare
The listserv sent me a message my post didn't go out, so try again.
If you go to conferences such as CMG (Computer Management Group), that
has been a mainframe organization (meaning MVS or z/OS) since it
started, our VM has never been represented, but VMWare now has many
sessions. It's
very large mondcss segments do not impact performance, only small ones
do.
B
On Mar 30, 2010, at 11:21, RPN01 nix.rob...@mayo.edu wrote:
Our MONDCSS grew, perhaps too large, while fighting this type
message a long
time ago. Once the problem was resolved, we didn't attempt to back
off the
Not sure if my previous note on this was distributed. There is NO
problem with having an oversized MONDCSS. A small one however stops you
from collecting data. Our default is now 64mb.
RPN01 wrote:
Our MONDCSS grew, perhaps too large, while fighting this type message a long
time ago. Once
Check http://velocitysoftware.com/customer/tips/MULTSYST.html;
(customer area). does that help?
Mark Wheeler wrote:
Is anyone sending files from z/OS to z/VM via z/VM's UFTD server? Would
sure be nice, since we don't have RSCS.
I checked doc for the TSO TRANSMIT command (most logical place)
Martin, did anything show up on the crypto column on esausr4?
Magat, Martin wrote:
Hi
May I know how to display the crypto card is being used on the zVM level
by the guest?
i.e. using CRYPTO APVIRT ..
Query CRYPTO APQ does not show it ...
Thanks
As Rob and Alan have less blatantly stated, Linux CPU numbers are bogus
in a virtual environment. The CPU reporting problem has been corrected
in ESALPS (now zVPS) for those that want to use linux numbers for
anything useful. If you don't have a mechanism to correlate the linux
cpu numbers
Mike, Rob probably left you out of the loop when he showed the new
bogusness of the data with Sles10/11. It's more fun showing customers...
Michael MacIsaac wrote:
“less bogus”?
More meaningful?
Mike MacIsaac mike...@us.ibm.com (845) 433-7061
Terry, I would ask if you use it AND HAVE VALIDATED RESULTS?
I've seen several sites install it during early days when there was no
contention. So no problems means it is working? But when there is
contention, the question is does it help when there is contention, or
does it force servers to
I'm interested too. I've not been able to get omnibus doc so would be
great if someone could provide doc on what is needed. We (Velocity
Software/ESALPS/zVPS) provide a lot of data and a lot of alerts.
Sending alerts somewhere that does not acknowledge doesn't do anyone any
good, and we are
The problem with putting all your paging volumes on one DS-8000 then
becomes performance. Your paging devices will now be sharing physical
disks. When you write pages out to multiple page devices, then all of
the I/O is then going to the same set of hardware.
From a performance perspective,
If you have the ability to capture CPU seconds consumed (a good
performance monitor does this), then it is an easy calculation assuming
you know the power of your IFL: (CPU Seconds / time) * MIPSRating
Paul, Thomas wrote:
Hi
We are in the process of migrating Websphere applications from
The Q3 issue is likely a websphere polling issue that Rob is working
with WAS development on. The solution to that currently leads back to
using CMM1 as well. Will call.
Paul, Thomas wrote:
Hi Barton,
Thank you. I would like to explore that possibility. Could you give me
a call please. 1
understanding with respect to workload
requirements.
Sterling James wrote:
Barton,
When you say using CMM1 are you inferring using the CMM-VMRM or
another method like cpuplugd?
Thanks
*Barton Robinson bar...@vm1.velocity-software.com*
Sent by: The IBM z/VM Operating System IBMVM
if I
do
build DCSS for Websphere binary, how much storage would I be able to
save?
Currently, most of them running at 1.2G 1.5G.
If by build an NSS you mean having the kernel in an NSS, that will
save you about 1MB per guest that uses it. Not a whole lot.
According to Barton Robinson
a good performance too would tell you this.
Dean, David (I/S) wrote:
Is there a way by looking at the device numbers below to tell which is a
PAV? I know how to go back and Q PAV the answer but is there any way to
tell by looking, a way the numbers are generated that would tell me?
First, IBM has never measured this for z/VM, their resources devoted to
things like LSPR for VM are long gone. So you are either getting a
sale's person's guess, or a z/OS guess and I guess they guess different?
Amdahl's Law of Multiprogramming from a software perspective states
that a
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 configuration
Martin, Terry R. (LOCKHEED MARTIN Performance Engineering/CTR) (CTR) wrote:
Hi Barton,
Thanks for the information. I
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
In looking at many cases like this, it was NEVER the network or TCPIP,
but something else on z/VM, sometimes Escon channels, sometime device
contention, sometimes cache in the storage controller, sometimes CPU
contention. I would recommend a good z/VM performance monitor
Salecky, Zenko J
don't know if z/OS has cleaned up its
act or not.
But I have heard the same thing from VM folks. (I've said it myself.)
As Barton says, the capture ratio in VM has always been quite high, due t
the way the data is captured in the VMDBK. However, Barton computes this
(I think) by comparing different
logoff record happens when the virtual machine leaves the building,
forced or voluntarily.
Lionel B. Dyck wrote:
Barton said:
Transaction records are cut at logon/logoff, that is how we get 100.00%
capture ratio. Nothing is lost.
Question:
Is there a interval record to capture the data
this e-mail and any attachments without reading, forwarding or
saving them. Thank you.
From: Barton Robinson bar...@vm1.velocity-software.com
To: IBMVM@LISTSERV.UARK.EDU
Date: 04/03/2009 08:44 AM
Subject:Re: Monitor versus accounting data
Sent by:The IBM z/VM Operating
ESALPS provides the data for accounting for the Linux process level,
linux application level, linux user level, and of course at the virtual
machine level. How to do this I thought was on our website, will put it
there today. It involves a very simple process usually as part of the
night
Alan, ESALPS correlates the linux process data and the z/vm data,
allowing chargeback to be done correctly at the process level. Other
products have not announced this capability as far as i know? So you
would be correct for other methods of collecting process data.
Alan Ackerman wrote:
On
from accounting data, but i do measure capture ratio (and have
for 20 years) and it is very very good for monitor data.
Alan Ackerman wrote:
The ESAPLPS code that Barton mentioned is doing prorating, right? How
accurate is that? Are you using accounting data or performance data?
I have a long
Oh, and yes, I too would charge based on resident storage (and yes we
have that data available). Charging on resident storage would make
things like current WAS polling show up as expensive as it really is -
it ensures Linux doesn't easily page out. And then it would be cheaper
for the
level, for which there is NO valid accounting data,
only valid performance data that is used by many for accounting.
Alan Ackerman wrote:
On Thu, 2 Apr 2009 10:09:08 -0800, Barton Robinson bar...@vm1.velocity-
Software.com wrote:
Alan, ESALPS correlates the linux process data and the z/vm
Because I get asked often about accounting and charge back for Linux
processes, z/VM virtual machines, and Linux applications, I've put up
more material explaining what data is available, and how to get that
data. The web page is at http://www.VelocitySoftware.com/account.html;
If anyone is interested in Oracle on zLinux, this conference:
http://www.zseriesoraclesig.org/; would be of great interest. It will
be a pretty intense week, and for the price is one of the best price
performers in the conference calender.
In ESALPS, ESAUSPG shows by user. ESAUCD2 shows if you have extra cache
or buffer. If you can send your reports, we will analyze it at no charge.
Martin, Terry R. (CMS/CTR) (CTR) wrote:
Hi
I seem to be doing a lot of paging currently on my z/VM 5.3 system I am
running multiple Linux
Of Barton Robinson
Sent: Tuesday, February 03, 2009 10:57 AM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: Correcting Statements From Marketing
Ok here's some heresy that I've presented to IBM and maybe
was communicated to their sales folks. From a capacity
planning and service level perspective
marketing. I
need to disabuse someone of their notion because it will affect the
capacity planning process. They do not seem to believe that running the
same O/S on two systems, one with n standard CPUs and the other with
the same number of IFLs will produce a result of equal MP effect.
Barton
The last time I looked at the cost of swap to vdisk, at 1,000 per
second, used 10% of an 890 processor. It's very hard to constrain a
system to swap this much, this was in the lab pushing limits not
normally pushed. With z10 IFL significantly faster, swapping to vdisk
would not be a
TCPIP in z/VM has metrics that can be used to show network response
time. z/VM provides transaction data. As a performance monitor that
analyzes both, ESAMON will cost you less than 1% of a cpu. Could
probably do what you want with just zMON at $1200/month.
Horlick, Michael wrote:
[mailto:ib...@listserv.uark.edu] On
Behalf Of Barton Robinson
Sent: January 28, 2009 11:31 AM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: Need ideas for checking current terminal response time
TCPIP in z/VM has metrics that can be used to show network response
time. z/VM provides transaction data
Velocity Software is announcing zPRO, a portal for z/VM systems
management. Functionality includes provisioning/cloning, as well as
interfaces to many systems management functions for z/VM. More details
can be found at http://velocitysoftware.com/zpro.html;. zPRO will be
put up soon on our
SYSTEM as displayed by ESALPS components is not system as in SYSTEM VMDBLK. System is
really system totals. Which screen exactly are you looking at? (There isn't a vdisk
storage by user display).
The ESAASPC shows all the address spaces including VDISK, and shows 'SYSTEM'. The ESAVDSK
just
ESAWEB is continously being enhanced - and if you are looking at Linux is included as part
of our ESALPS (Linux Performance Suite). The LINUXVM.ORG website runs on ESAWEB, as does
VelocitySoftware.COM, and other websites as well. ESALPS was written in assembler to be
fast. With lack of
All conversion tools and some amount of conversion assistance is part of ESAWEB.
Schuh, Richard wrote:
Barton,
Are the migration tools included with ESAWEB or are they available as
separate packages?
Regards,
Richard Schuh
-Original Message-
From: The IBM z/VM Operating
Look at CP SET SHARE userid REL 100 ABS 5% LIMITSOFT
will allow a linux server to only use 5% of the system unless no other user is ready to
use CPU.
Juarez, David T. wrote:
What controls can be put in place to manage zLinux guests running under z/VM
5.3, so they do not saturate CPU and
Do the math Number one reason for ONE outage at each new z/linux installation is to
fill up page space - guess you were lucky and had some extra spool space (no block paging
so slow), so you luckily didn't take the outage - which makes your servers even slower
Schuh, Richard wrote:
] On Behalf Of Barton Robinson
Sent: Thursday, November 13, 2008 11:36 AM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: Page Space
Do the math Number one reason for ONE outage at each new
z/linux installation is to fill up page space - guess you
were lucky and had some extra spool space (no block
, but
that difference is driven more by the hardware capabilities than by the
design.
-Paul
On Nov 1, 2008, at 6:34 PM, Barton Robinson wrote:
One thing that really bothers me about VMWARE. When I ask about
performance to the people that measure, they tell me the VMWARE
contract
One thing that really bothers me about VMWARE. When I ask about performance to the people
that measure, they tell me the VMWARE contract specifically states they are not allowed to
talk about it's performance. A vendor that won't let people talk about performance must
be very afraid details
The best model is one I heard last week at the ibm conference. One large well known
installation charges only for prime shift, with 3 different rates based on types of
service. All charges are based on resource consumption. With the usage charges and prime
shift only charges, users are
Best practices is to use Vdisk for swap, and reduce linux virtual machine sizes - not to
buy more REAL z/VM memory unless you really need it. 101% memory useage means almost
nothing. It is not relevant to performance or capacity, and thus shouldn't have business
decisions or performance
are you using to make decisions?
Mary Anne Matyaz wrote:
I know I'm probably going to regret this, but, how can that be? I said VM
memory usage, right?
Not Linux
MA
On Mon, Sep 29, 2008 at 1:23 PM, Barton Robinson
[EMAIL PROTECTED] wrote:
Best practices is to use Vdisk for swap
of memory, is it more helpful to use vdisk or guest
memory?
MA
On Mon, Sep 29, 2008 at 3:32 PM, Barton Robinson
[EMAIL PROTECTED] wrote:
z/VM Memory usage, what do you think it means? If a page of a virtual
machine is in storage, but has not been referenced in 10 minutes, is that
part of your percent
We've been asked to provide such a tool by some of our customers. Please see details
about ESAWEB (http://velocitysoftware.com/esaweb.html;) and a link to details on the
conversion tool if you would be interested in such a tool.
Sounds like there is a need for decent performance monitoring.
dave wrote:
Hi, Gary.
Well, there is no such thing as a free lunch, so
establishing *large* numbers of IUCV connections between
virtual machines does cost something. Control blocks must be
allocated, must be managed by CP,
140GB didn't leave room for work, and make sure you have lots more expanded.
Schuh, Richard wrote:
Let's say that total amount of virtual storage is the main issue, with
everything else relegated to the status of being inconsequential.
Regards,
Richard Schuh
-Original
The port and IP address sending the request should be in the monitor records. There would
some inforamation useful there.
Mike Walter wrote:
Back on July 15, we experienced our first known Denial of Service attack
(more likely a problem server).
I reported it to our Internet Security group
The SHARE meeting was graciously located in San Jose, California for Velocity Software's
20th Anniversary. Velocity Software was incorporated 8/8/88 close by in Mountain View,
CA. We have been a very active part of VM/XA, VM/ESA and now z/VM in the UPs, DOWNs and
now back UPs of the last 20
[mailto:[EMAIL PROTECTED] On
Behalf Of Barton Robinson
Sent: Wednesday, July 23, 2008 10:59 AM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: Nice idea in blog: Should we toss x86 architecture - NOT.
Ok, so reality check folks before y'all start drooling about jobs and
can think you can
run 47000 windows
Ok, so reality check folks before y'all start drooling about jobs and can think you can
run 47000 windows servers under VM. In Linux we learned that running compiled code
natively on z, megahertz is megahertz and a CPU intensive task would always run faster
on Intel than on z (until we got z9
Please. ESAMON has been correcting the Linux numbers since the problem was discovered in
2001.
Thomas Kern wrote:
I think that the discussion was that tools like PERFTK, ESAMON, CP IND
USER show accurate numbers for what the whole virtual machine is using,
and the the numbers from tools
Not really the monitor, but the performance monitor ESAMON does that
standard.
Howard Rifkind wrote:
Off the top of the lists hat would anyone know if you can connect a second
physical monitor for z/VM.
I would like to have one in the computer room and one in the Systems Programmers area.
zMON at $1200/year?
Huegel, Thomas wrote:
Depending on what you need HOBIT (a freebe) may work for you.
-Original Message-
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] Behalf Of LOREN
CHARNLEY
Sent: Tuesday, June 03, 2008 8:59 AM
To: IBMVM@LISTSERV.UARK.EDU
Subject:
I'm not Phil, but no. Our data layouts are published, so VISUALIZER could if
BMC wanted.
Bill Munson wrote:
Phil,
Is anyone that is using the ESAMAP History files as input to there
VISUALIZER getting the same numbers out ?
thanx
Bill Munson
VM System Programmer
201-418-7588
Phil
Stephen, you are doing great. Your workload must be Oracle, and not WAS, DB2 or Domino. If
it is WAS, it must be old prior to performance enhancements. so don't upgrade it.
And the metric IS useful, you know if you add 4 more servers how much more mainframe
storage you need. And your number
My use of the term over-commit is more simple with the objective of setting a target
that management understands. I don't include vdisk - that is a moving target based on
tuning and workload, as is the use of CMM1. The way I like to use the term is much higher
level that doesn't change based
Message-
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED]
Behalf Of Barton Robinson
Sent: Tuesday, May 13, 2008 10:20 AM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: Overcommit ratio
My use of the term over-commit is more simple with the objective of setting a target
that management
ESALPS provides this.
Shedlock, George wrote:
Does anyone know of a program or utility that can generate an SNMP
message preferably from a REXX exec?
George Shedlock Jr
AEGON Information Technology
AEGON USA
502-560-3541
So at times of peak CPU, you need to share the CPU to provide better CICS response
times. Use SET SHARE vsebatch REL 100 ABS 30% LIMITSOFT. Large shares will NOT do what
you think or want.
This command lets the batch use default share, but caps it at 30% CPU unless there are no
other users.
no no no no no
CPU is the bottleneck, not queues, not paging. THis is a matter of CPU redistribution. or
application tuning, or talk to your ibm business partner about more CPU.
Mike Hammock wrote:
Did you perhaps increase the size of the virtual machines when going to
zVSE
Gee, next it will be the high cost of z/OS that you will be looking at. How much do you
save if you move an application from z/OS to z/Linux?
Colin Allinson wrote:
Rob van der Heij [EMAIL PROTECTED] wrote :-
Z NET,QUICK
Couldn't be 'QUICK' enough for us. We managed to eliminate it from
PROTECTED] On
Behalf Of Barton Robinson
Sent: Thursday, April 03, 2008 12:38 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: VTAM R.I.P.
Gee, next it will be the high cost of z/OS that you will be looking at.
How much do you
save if you move an application from z/OS to z/Linux?
Colin Allinson wrote
is a heavier on technical how'tos
and user experiences sessions and non-IBM vendor content - Barton only
got 1 session at expo :)... IMHO.
You can use your IBM credits for all the z10's you're purchasing to
attend Expo, though :)
Marcy Cortes
This message may contain confidential and/or privileged
The guideline for LDUBUF is to LOWER it from default, NEVER raise it unless you like to
re-IPL z/VM.
O'Brien, David W. (NIH/CIT) [C] wrote:
I made the mistake of believing what I was told.
cp q storage
05:57:21 STORAGE = 2G
Ready; T=0.01/0.01 05:57:21
cp q virtual storage
05:57:35
I've put up my popular presentation configuring z/VM and Linux for Performance at
velocitysoftware.com/present/config. This presentation looks at how to ensure your
performance for Linux and z/VM is optimal, and provides the best practices. I'm still
working on the notes. YOu will want to look
AND capacity
planning data (as well as operational alerts).
Thomas Kern wrote:
Because as someone pointed out before (Barton, I think), for performance
monitoring, you want more event data and for capacity planning you need
appropriate sample data. I think PerfTK could deal with more data
.
Alan Altmark wrote:
On Wednesday, 03/12/2008 at 01:48 EDT, barton
[EMAIL PROTECTED] wrote:
Alan, look at what he's collecting. If you don't think that is
miscollecting,
you should take the class too.
Are you telling me that some monitor data is worthless to be recorded
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