[Ocfs2-users] RHEL4 x86_64 OCFS2 10gR2 performance

[Jizhong_Wang@whirlpool.com]

I had a similar situation with similar hardware settings (IBM eSeries, 
SHARK, Gigabit NICs for interconnect). What I found out was I picked both 
public and private NICs in VIP configuration (GUI) and most inter-instance 
chattings were using the public interfaces. After having corrected the 
problem (I re-installed RAC), I got much-better-performaning systems


Jizhong Wang





Kevin Hulse <kevin.hulse at placemark.com> 
Sent by: ocfs2-users-bounces at oss.oracle.com
03/22/2006 09:34 AM

To
Marcio Costa <marciopc at interativainternet.com.br>
cc
"ocfs2-users at oss.oracle.com" <ocfs2-users at oss.oracle.com>, 
josue at interativainternet.com.br
Subject
Re: [Ocfs2-users] RHEL4 x86_64 OCFS2 10gR2 performance






Marcio Costa wrote:

>Hi,
>
>I have 2 IBM x346 eServers, both of them with 2 Qlogic HBAs (qla2340). 
They 
>are connected rendundantly to a IBM DS4300 (fiber storage). I have Oracle 

>10gR2 RAC installed. RHEL4 U2 x86_64. My problem is the following:
>
>Each server works very well, if alone,ie, if the other one has not 
mounted 
>the ocfs2 partition. But when both of them are working, the performance 
goes 
>to hell. 
>For example: there is a job that, when it runs on one server alone, takes 
4 
>seconds, but when I put both servers on line, it takes 3 minutes.
>
> 
>

For starters, I would suggest poking into the system with
the em dbconsole. Run ADDM for the time period in question
and see what it complains about. That should at least give
you some idea where the problem is.

>What could it be ? Is there any conf that I could check. I was thinking 
>about change the ocfs2 for other fs (gfs or other)... could it be the 
case ?
>
>Thanks in advance.
>
>Marcio Costa.
>
>--
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> 
>


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