[DRBD-user] DRBD is deadly slow.

Balreddy Medipally balreddy.m at imimobile.com
Tue Mar 30 19:30:27 CEST 2010

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

Thank you for the reply. As it is production environment, we can not change it to newer version without testing in test bid.
To achieve the MySQL high availability we are using DRBD. when load was not there on mysql, it is running really fast, when we put some load on that server it become very very slow (it has to handle minimum 4-million requests per day).


From: drbd-user-bounces at lists.linbit.com on behalf of Lars Ellenberg
Sent: Tue 3/30/2010 10:30 PM
To: drbd-user at lists.linbit.com
Subject: Re: [DRBD-user] DRBD is deadly slow.

On Tue, Mar 30, 2010 at 03:50:39PM +0200, Stefan Seifert wrote:
> > 2010/3/30 Balreddy Medipally <balreddy.m at imimobile.com>
> >
> > > I am running DRBD 8.3.0 on RedHat Enterprise Linux AS 4.8 64-bit

You do realize that 8.3.0 is 15 month old,
we are at 8.3.7, 8.3.8 coming soon?

> > > OS for production purpose. MySQL works superfast in when load was not
> > > there, when load was there it become deadly slow. Can any one please
> > > help me to make it faster.

What exactly is "super fast" and "deadly slow"?
If you cannot quantify it, you cannot tune it.

> But in any case the webinar and some good benchmarking should be the
> first step.

That's right ;)

: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com <http://www.linbit.com/> 

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