[Ocfs-users] OCFS Questions

[Jeram]

Hi Wim...

The Database is running well without any problems, even if we query a table
with 20 Million records there is no performance issues....

I am suspecting at the HW level, that is the controller and the
SecurePath...we are still trying to get best solution from the Local HP
Support.

One more questions, is this a common situation in all OCFS users, or I am
the only one who are facing this issue?

Rgds/Jeram

-----Original Message-----
From: Wim Coekaerts [mailto:wim.coekaerts at oracle.com] 
Sent: Friday, September 03, 2004 7:45 AM
To: Jeram
Cc: 'Wim Coekaerts'; ocfs-users at oss.oracle.com
Subject: Re: [Ocfs-users] OCFS Questions

well, it can be recovering right ? this sounds like normal behavior. I'm
not really the right person to give rac advice, you could try to talk to
oracle support, I dont' want to give out false info..

but if it's doing recovery and its reading the redologs and stuff it can
take time... check your alert log

Wim
On Fri, Sep 03, 2004 at 07:42:31AM +0700, Jeram wrote:
> Hi Wim...
> 
> I Took the VMSTAT report by starting the RAC server, there is no user
> connected at that time, we have observed this strange behavior,...even if
I
> stop the RAC server it's giving the same value...i realized something is
> going in my system, but we still not able to figure it out.
> 
> Is there any advice from you, to trace what is really going on?
> 
> Please advice...
> 
> Rgds/Jeram
> 
> -----Original Message-----
> From: Wim Coekaerts [mailto:wim.coekaerts at oracle.com] 
> Sent: Friday, September 03, 2004 7:34 AM
> To: Jeram
> Cc: 'Wim Coekaerts'; ocfs-users at oss.oracle.com
> Subject: Re: [Ocfs-users] OCFS Questions
> 
> ok so you're doing massive read so I assume there is more stuff
> happening on the box. are you doing db queries or something to have this
> much reads going ?
> 
> the writes are pretty low, I don't think by itself it will make a big
> difference. you should be ok
> 
> On Fri, Sep 03, 2004 at 07:33:23AM +0700, Jeram wrote:
> > Hi Wim...
> > 
> > Herewith I am sending you the VMSTAT 1 10 output.
> > 
> > Please Advice...
> > 
> > Rgds/Jeram
> > 
> > -----Original Message-----
> > From: Wim Coekaerts [mailto:wim.coekaerts at oracle.com] 
> > Sent: Thursday, September 02, 2004 8:03 AM
> > To: Jeram
> > Cc: 'Wim Coekaerts'; ocfs-users at oss.oracle.com
> > Subject: Re: [Ocfs-users] OCFS Questions
> > 
> > if you have a few controllers so that there are multiple queues you
> > should be ok.
> > 
> > run     vmstat 1 10 when not much is going on and email that ?
> > if you have no io wait if oracle is not running but it's just mounted,
> > little or a lot of io won't be a problem
> > 
> > On Thu, Sep 02, 2004 at 08:02:51AM +0700, Jeram wrote:
> > > Hi Wim...
> > > 
> > > Thanks a bunch for ur quick reply. 
> > > Currently I am using 51 Mount Points, event I have not meet any
problems
> > > since my database still having low Load, I just wonder if the DB load
> > > increase it will have some performance issues. We are using EVA6000
> > Storage
> > > with 17TB HDD size....
> > > 
> > > Please advice...
> > > 
> > > 
> > > -----Original Message-----
> > > From: Wim Coekaerts [mailto:wim.coekaerts at oracle.com] 
> > > Sent: Thursday, September 02, 2004 7:50 AM
> > > To: Jeram
> > > Cc: ocfs-users at oss.oracle.com
> > > Subject: Re: [Ocfs-users] OCFS Questions
> > > 
> > > 
> > > > 1. What is the Maximum mount point suggested if we are using OCFS ?
> > > 
> > > 20-30 seems to not be a problem, if you have real hardare with a good
> > > setup, we have seen folks use up to 60
> > > 
> > > > 2. Is there any method to tune the OCFS to booster the IO
performance?
> > > 
> > > uhm, we are equal to raw. I dont' think so.
> > 
> 
>