Mailing List Archive: big sized applications in XEN virtual machine

big sized applications in XEN virtual machine

Jun 20, 2005, 7:04 PM

Post #1 of 4 (510 views)

Hi,

recently I discovered the exsistance of Xen. I looked a bit around and
feel quite
impressed by this solution. Then an idea came to my mind, having a partition
for a more or less stable server and one for my bleeding edge desktop
playground.
I think I am not the only one with that ;)
But I dont want to use the typical lamp server config, I thought more about
a massive database server, such as DB2 together with a recent version of
SAP Netweaver. Both of them are quite memory and of course IO-hungry.
I have decent hardware to run that, but I couldnt found any experience report
about such a xen-DB2-SAP combination. So I ask you, if there are any experiences
with that. In special I ask myself, how the removal of the TLS libraries might
affect performance and stability of those applications.
(Preferred OS is RHEL4)

I would be glad to hear some hints or experiences.

Thanks & Regards,
Andre.

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Re: big sized applications in XEN virtual machine [ In reply to ]

fajar at telkom

Jun 20, 2005, 8:19 PM

Post #2 of 4 (515 views)

Permalink

Andre Kuester wrote:

>So I ask you, if there are any experiences
>with that. In special I ask myself, how the removal of the TLS libraries might
>affect performance and stability of those applications.
>(Preferred OS is RHEL4)
>
>
>
I tried using Oracle 10g on a rather old version of Xen from bk (it
still uses kernel 2.6.9) with Lineox 4.
TLS libs (/lib/tls, /usr/lib/tls, /usr/X11r6/lib/tls) moved out of the way.
This configuration works great running MTA (mail filtering purposes) and
web server (LAMP).
However it didn't work quite as expected running Oracle.
Oracle runs, but often I would get entries like these on alert log :

ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV]
[Address not mapped to object] [0x0] [] []
ORA-00600: internal error code, arguments: [kghssgai2], [1], [36], [],
[], [], [], []
ORA-00600: internal error code, arguments: [kghssgai2], [1], [20], [],
[], [], [], []
ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV]
[Address not mapped to object] [0x0] [] []
ORA-00600: internal error code, arguments: [kghssgai2], [5], [36], [],
[], [], [], []
ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV]
[Address not mapped to object] [0x0] [] []
ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV]
[Address not mapped to object] [0x0] [] []
ORA-00600: internal error code, arguments: [kghssgai3], [128], [20], [],
[], [], [], []
ORA-00600: internal error code, arguments: [kghssgai2], [5], [20], [],
[], [], [], []

and sometimes it just dies.
Revert back to native linux, everything works fine.

I haven't had time to test current Xen 2.0.6 (or nightly snapshot) though.

Regards,

Fajar

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Re: big sized applications in XEN virtual machine [ In reply to ]

wim.coekaerts at oracle

Jun 20, 2005, 8:36 PM

Post #3 of 4 (516 views)

Permalink

ve had it running for quite some time without problems. even the middle
tier stack.

been pretty solid

On Tue, Jun 21, 2005 at 10:19:28AM +0700, Fajar A. Nugraha wrote:
> Andre Kuester wrote:
>
> >So I ask you, if there are any experiences
> >with that. In special I ask myself, how the removal of the TLS libraries
> >might
> >affect performance and stability of those applications.
> >(Preferred OS is RHEL4)
> >
> >
> >
> I tried using Oracle 10g on a rather old version of Xen from bk (it
> still uses kernel 2.6.9) with Lineox 4.
> TLS libs (/lib/tls, /usr/lib/tls, /usr/X11r6/lib/tls) moved out of the way.
> This configuration works great running MTA (mail filtering purposes) and
> web server (LAMP).
> However it didn't work quite as expected running Oracle.
> Oracle runs, but often I would get entries like these on alert log :
>
> ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV]
> [Address not mapped to object] [0x0] [] []
> ORA-00600: internal error code, arguments: [kghssgai2], [1], [36], [],
> [], [], [], []
> ORA-00600: internal error code, arguments: [kghssgai2], [1], [20], [],
> [], [], [], []
> ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV]
> [Address not mapped to object] [0x0] [] []
> ORA-00600: internal error code, arguments: [kghssgai2], [5], [36], [],
> [], [], [], []
> ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV]
> [Address not mapped to object] [0x0] [] []
> ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV]
> [Address not mapped to object] [0x0] [] []
> ORA-00600: internal error code, arguments: [kghssgai3], [128], [20], [],
> [], [], [], []
> ORA-00600: internal error code, arguments: [kghssgai2], [5], [20], [],
> [], [], [], []
>
> and sometimes it just dies.
> Revert back to native linux, everything works fine.
>
> I haven't had time to test current Xen 2.0.6 (or nightly snapshot) though.
>
> Regards,
>
> Fajar
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users

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Re: big sized applications in XEN virtual machine [ In reply to ]

fajar at telkom

Jun 20, 2005, 9:04 PM

Post #4 of 4 (508 views)

Permalink

Wim Coekaerts wrote:

>ve had it running for quite some time without problems. even the middle
>tier stack.
>
>been pretty solid
>
>
Oracle 10G? On which version of Xen and which Linux distro?
I'd like to test it again soon.

Regards,

Fajar

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