RES: ER performance
Posted in 2004
The processors are:
2 Intel XEON 2.8 GHz
512K L2 Cache
533 MHz External Bus Speed
RedHat Linux 8.0
Kernel 2.4.20-19.9.XFS1.3.0smp
Glibc 2.3.2-4.80.6
IDS 7.31UD1
I'll try a single cpu setup to see what happens.
Thanks,
Julio
-----Mensagem original-----
De: owner-informix-list@iiug.org [mailto:owner-informix-list@iiug.org] Em
nome de Richard Kofler
Enviada em: s'bado, 31 de janeiro de 2004 06:25
Para: informix-list@iiug.org
Assunto: Re: ER performance
Julio Cesar wrote:
>
> Hi guys,
> A few weeks ago I got ER working on two servers between my companies.
Since
> that, I'm experiencing a lot of performance issues that I'd never passed
> through before.
> The replication is working pretty fine but the server is completely
> overloaded.
>
> I think I've checked out everything, although I couldn't find out what
might
> be happening. I just notice that cpu vps are getting overloaded according
a
> "onstat -g glo" output. Also, locks on tables are taking longer than ever
to
> be released.
>
> What should I check to solve that?
>
> ----
> By the way, I have DELL Servers with 2 Intel XEON processors, with
> Hyperthreading enabled. On Linux, the system recognize 4 processors
('cause
> of hyperthreading). With that, should I use 2 or 4 CPU Vps? What's better?
> ---
[ ... snip ... ]
please give details.
XEON processors there are *many* different ones.
What is your chipset actually?
Post Kernel version, GLICB version and INFORMIX version.
Generally speaking, I would test 1 CPUVP & single CPUVP setup
versus 8 CPUVPs, if your XEONs are >2Ghz and have the larger
L1 caches and if your memory is using >4 chips DDR
If either your Southbridge, or memory, or L2 chache, or
proc speed is not well integrated, then you will see
that the single CPUVP setup is faster
I never had a situation where a 2 CPUVP setup was
anything else that slow.
YMMV
dic_k
--
Richard Kofler
SOLID STATE EDV
Dienstleistungen GmbH
Vienna/Austria/Europe
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