[Ocfs2-users] RHEL4 x86_64 OCFS2 10gR2 performance

[Kevin Hulse]

    Reinstalling CRS or the RDBMS to repair this sort of
issue is dramatic overkill. You can reconfigure the NICs
with the oifcfg utility pretty easily. I had a misconfigured
cluster interconnect and fixed it that way without
reinstalling anything.

    This problem had manifested itself as poor cluster
transfer response times which I detected through the
dbconsole. I discovered the root of the problem by
running sar and examining the network statistics.

Jizhong_Wang at whirlpool.com wrote:

>
> 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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