| Author |
Easerver and Xeon Processors.
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| Jorge López 2005-08-08, 8:25 pm |
| Hi everybody.
I had and old Compaq server with Pentium processors, working with EAServer
as a web container and pb components container.
Almost two months ago we changed this server to a brand new Dell server with
Xeon processors...
I noticed that since we changed to this new server I'm getting a lot of this
issues in the jaguar.log:
Fatal error when trying to activate pb method
or
Fatal error when trying to deactivate pb method...
and pb heap managers error also.
I looked into the solved cases by sybase tech-support, and found a case when
someone mentioned that
there is a problem with EAServer and hyperthreading technology, which it's
the one used by
xeon processors.
has anyone had this same issue?
any experience with this?
| |
| Carson Hager 2005-08-08, 8:25 pm |
| Hyperthreading is pure trouble. I would recommend turning this off
immediately. You can do this easily in the BIOS.
Carson
"Jorge López" <jlopez@url.edu.gt> wrote in message
news:42f7d844$1@foru
ms-1-dub...
> Hi everybody.
> I had and old Compaq server with Pentium processors, working with EAServer
> as a web container and pb components container.
> Almost two months ago we changed this server to a brand new Dell server
> with Xeon processors...
> I noticed that since we changed to this new server I'm getting a lot of
> this issues in the jaguar.log:
> Fatal error when trying to activate pb method
> or
> Fatal error when trying to deactivate pb method...
> and pb heap managers error also.
>
> I looked into the solved cases by sybase tech-support, and found a case
> when someone mentioned that
> there is a problem with EAServer and hyperthreading technology, which it's
> the one used by
> xeon processors.
>
> has anyone had this same issue?
> any experience with this?
>
>
>
>
| |
| Chris Pollach 2005-08-09, 7:24 am |
| Jorge;
The problem is not with Jaguar but rather with Sun's JVM. This is also
documented on Sun's web site. I think they have fixed this problem in JDK
1.5 - but I believe this version will not be used with EAServer until EAS
6.0. In the mean time you can do one of two things:
1) Turn hyperthreadfing off at the BIOS level (W2003 and XP only) or
2) Use the IMAGECFG.exe utility to assign EAServer specific CPU's (in this
case physical ones not logical).
Regards ... Chris
"Jorge López" <jlopez@url.edu.gt> wrote in message
news:42f7d844$1@foru
ms-1-dub...
> Hi everybody.
> I had and old Compaq server with Pentium processors, working with EAServer
> as a web container and pb components container.
> Almost two months ago we changed this server to a brand new Dell server
with
> Xeon processors...
> I noticed that since we changed to this new server I'm getting a lot of
this
> issues in the jaguar.log:
> Fatal error when trying to activate pb method
> or
> Fatal error when trying to deactivate pb method...
> and pb heap managers error also.
>
> I looked into the solved cases by sybase tech-support, and found a case
when
> someone mentioned that
> there is a problem with EAServer and hyperthreading technology, which it's
> the one used by
> xeon processors.
>
> has anyone had this same issue?
> any experience with this?
>
>
>
>
| |
| T. Nomura 2005-08-12, 3:24 am |
| Chris,
Do you know the JVM's bug id?
I tried to find from the following site, I was not able to
find the one
you are mentioning.
http://bugs.sun.com/bugdatabase/index.jsp
Thanks in advance.
T. Nomura
> Jorge;
>
> The problem is not with Jaguar but rather with Sun's
> JVM. This is also documented on Sun's web site. I think
> they have fixed this problem in JDK 1.5 - but I believe
> this version will not be used with EAServer until EAS 6.0.
| |
|
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| Jim Egan 2005-11-16, 1:24 pm |
| For the general public I want to add to what Carson said. Hyperthreading with the current
JVM is a problem. We have production servers (EAS 4.2, PB9) that do not have
hyperthreading. They routinely run DataWindow reports that generate 100,000+ rows. A
client introduced a QA machine that has hyperthreading. It would fail to run the same
reports until hyperthreading was turned off.
--
Jim Egan [TeamSybase]
Sybase product enhancement requests:
http://www.isug.com/cgi-bin/ISUG2/submit_enhancement
carson.hager@do_no_spam.cynergysystems.com wrote...[color=darkred]
> Hyperthreading is pure trouble. I would recommend turning this off
> immediately. You can do this easily in the BIOS.
>
>
> Carson
>
>
>
> "Jorge López" <jlopez@url.edu.gt> wrote in message
> news:42f7d844$1@foru
ms-1-dub...
| |
| Jim Egan 2005-11-16, 8:24 pm |
| carson.hager@do_no_spam.cynergysystems.com wrote...
> Hyperthreading is pure trouble. I would recommend turning this off
> immediately. You can do this easily in the BIOS.
Have you heard anything about a fix being created for this problem?
--
Jim Egan [TeamSybase]
Sybase product enhancement requests:
http://www.isug.com/cgi-bin/ISUG2/submit_enhancement
| |
| Carson Hager 2005-11-16, 8:24 pm |
| Nope.
____________________
____________________
____
Carson Hager
Cynergy Systems, Inc.
http://www.cynergysystems.com
Email: carson. hager@cynergysystems
.com
Office: 866-CYNERGY ext. 89
Mobile: 1.703.489.6466
Take PowerBuilder to the Web with EAF 4.0
http://www.cynergysystems.com/public/products/eaf
"Jim Egan" < eganjp_nospam@compus
erve.com> wrote in message
news:437bdf89$1@foru
ms-1-dub...
> carson.hager@do_no_spam.cynergysystems.com wrote...
>
> Have you heard anything about a fix being created for this problem?
> --
> Jim Egan [TeamSybase]
> Sybase product enhancement requests:
> http://www.isug.com/cgi-bin/ISUG2/submit_enhancement
| |
| Chris Pollach 2005-11-17, 9:24 am |
|
This problem is acknowledged by SUN but I have not seen any fixes in the
JDK 1.4.x realm thus far.
"Jim Egan" < eganjp_nospam@compus
erve.com> wrote in message
news:437bdf89$1@foru
ms-1-dub...
> carson.hager@do_no_spam.cynergysystems.com wrote...
>
> Have you heard anything about a fix being created for this problem?
> --
> Jim Egan [TeamSybase]
> Sybase product enhancement requests:
> http://www.isug.com/cgi-bin/ISUG2/submit_enhancement
| |
| Jim Egan 2005-11-17, 8:25 pm |
| Is this problem only hyperthreaded machines? Or any multi-CPU machine?
At least on XP the hyperthreading appears to the O/S as a second CPU.
--
Jim Egan [TeamSybase]
Sybase product enhancement requests:
http://www.isug.com/cgi-bin/ISUG2/submit_enhancement
| |
| Chris Pollach 2005-11-18, 7:24 am |
| Jim;
From my work on the new Xeon processor boxes, it seams to be the
hyper-threading that does the JVM in (note: it is not EAServer's fault, it's
the Sun JVM's problem). If you have a dual or quad Xeon configuration,
turning HT off but leaving the native dual or quad processor support active
stabilizes EAServer (JVM) considerably.
It should be noted though that you still need to have set the JVMOptions
property "carefully" in EAServer to properly address the remaining tuning
and stability issues under heavy load.
Regards ... Chris
"Jim Egan" < eganjp_nospam@compus
erve.com> wrote in message
news:437d25ca$1@foru
ms-1-dub...
> Is this problem only hyperthreaded machines? Or any multi-CPU machine?
>
> At least on XP the hyperthreading appears to the O/S as a second CPU.
> --
> Jim Egan [TeamSybase]
> Sybase product enhancement requests:
> http://www.isug.com/cgi-bin/ISUG2/submit_enhancement
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