This comparison is also in the range of values that have been measured.
However it is near the low end of the range for commercial work. We
usually see this type of comparison when there are long pathlengths of work
per byte processed, query oriented workloads with little locking or writes,
or data base loads that exploit private caches and don't benefit from
zSeries shared cache. A relatively small cache working set and high
sustained utilization of the Intel processor will drive this kind of
result. It can also occur when comparing a fully utilized dedicated intel
machine to a IFL in an LPAR with a lot of other work going on. It is not a
center value to use when you don't understand the application behavior or
production utlization.
Joe Temple
Executive Architect
Sr. Certified IT Specialist
[EMAIL PROTECTED]
845-435-6301 295/6301 cell 914-706-5211
Home office 845-338-1448 Home 845-338-8794
"Little, Chris"
<[EMAIL PROTECTED]
hs.org> To
Sent by: Linux on LINUX-390@VM.MARIST.EDU
390 Port cc
<[EMAIL PROTECTED]
IST.EDU> Subject
Re: Business Week Article
06/30/2005 01:16
PM
Please respond to
Linux on 390 Port
Were those Solaris/AIX servers underutilized? By a lot?
Certainly workloads don't compare across platforms. I agree with that, but
for database workloads I was told (informally) to assume a single z/900 IFL
at a Pentium III 700mhz. Within reason, it seems correct. We are probably
getting better than that, but certainly nowhere near what you are seeing.
Low CPU/high IO (webserving, maybe?) might translate better to linux on
zseries, I don't know.
-----Original Message-----
From: Uriel Carrasquilla [mailto:[EMAIL PROTECTED]
Sent: Thursday, June 30, 2005 12:12 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Business Week Article
Crhis:
I suspect not all workloads are the same. What we are finding out is that
loads are taking place much faster. That was a large pecentage of our
usage
before. We don't have any users signed on and we only run the zLinux image
to service requests. It works for us and no one is complaining.
Regards,
[EMAIL PROTECTED]
NCCI
Boca Raton, Florida
561.893.2415
greetings / avec mes meilleures salutations / Cordialmente mit freundlichen
Grüßen / Med vänlig hälsning
"Little, Chris"
<[EMAIL PROTECTED] To:
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hs.org> cc:
Sent by: Linux on Subject: Re: Business Week
Article
390 Port
<[EMAIL PROTECTED]
IST.EDU>
06/30/2005 11:48
AM
Please respond to
Linux on 390 Port
Are you getting that much performance out of an IFL? Four times the
performance of a single RISC unix server?
I say that because the Oracle database we moved from an HP server with 2
PA-RISC 8600 (440mhz) cpus consumed a little more than one IFL(100%-120% on
a two IFL LPAR).
This was about in line with what IBM recommended.
-----Original Message-----
From: Uriel Carrasquilla [mailto:[EMAIL PROTECTED]
Sent: Thursday, June 30, 2005 10:15 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Business Week Article
John:
The formula we use is 4xCPU (sun 1.2 GHz or aix 1.0 GHz) is the same as one
IFL under z890 running zLinux under LPAR.
If zVM, we take away 10% power for the zVM overhead.
This is a rough estimate and gets refined upon the real circumstances.
Products licensing based on number of CPU's get penalized but we spend more
for the H/W (IBM is happy).
There are other benefits that are more important, such as saving in head
counts that I rather not get into but you can figure it out.
Regards,
[EMAIL PROTECTED]
NCCI
Boca Raton, Florida
561.893.2415
greetings / avec mes meilleures salutations / Cordialmente mit freundlichen
Grüßen / Med vänlig hälsning
"McKown, John"
<[EMAIL PROTECTED] To:
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insctr.com> cc:
Sent by: Linux on Subject: Re: Business Week
Article
390 Port
<[EMAIL PROTECTED]
IST.EDU>
06/30/2005 09:35
AM
Please respond to
Linux on 390 Port
> -----Original Message-----
> From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of
> Pieter Harder
> Sent: Thursday, June 30, 2005 8:18 AM
> To: LINUX-390@VM.MARIST.EDU
> Subject: Re: Business Week Article
>
>
> > Run Oracle on the z/890 as a "super server", (We just eliminated
> > z/VM and Linux on the zSeries because nobody knew what to do with
> > them
>
> John,
>
> Just curious, on what are they planning to run Oracle then?
> zOS? You guys mus have gobs of money....
>
> Best regards,
> Pieter Harder
We don't have "gobs of money". That scenario is what is being touted by
certain managers. Personally, I don't buy it, but what do I know? They say
that Oracle is licensed by the number of processors in the box. And that a
license for z/OS on two processors (regardless of which processor it is -
z800, z890, z990, all the same cost) costs the same as a license for
Windows
running on two processors. This seems silly to me, but I cannot refute it.
Also, at one time, we did test Oracle on Linux under z/VM (back when we had
those products). The Oracle DBAs (who ran the test themselves) came to the
conclusion that a z800 single IFL and 1 Gb of memory did not perform as
well
as a 10Gb Sun system with 10 processors. Well, duh!
--
John McKown
Senior Systems Programmer
UICI Insurance Center
Information Technology
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