[DRBD-user] slow preformance to remote server

[Bart Coninckx]

Gerry,

what about the differences in read and write to both the lowel level device 
and the DRBD device?

On Tuesday 08 June 2010 14:05:11 Gerry Kernan wrote:
> Hi Bart,
> Thanks for your time on this.
> 
> Do you mean , when i access /dev/cciss/c0d0p2 instead of /dev/drdb0.
> If so yes accessing /dev/cciss/c0d0p2 is a lot faster.
> 
> gerry
> 
> -----Original Message-----
> From: drbd-user-bounces at lists.linbit.com
>  [mailto:drbd-user-bounces at lists.linbit.com] On Behalf Of Bart Coninckx
>  Sent: 08 June 2010 12:58
> To: Gerry Kernan
> Cc: drbd-user at lists.linbit.com
> Subject: Re: [DRBD-user] slow preformance to remote server
> 
> With protocol A that does not make a lot of sense. So using the lowlevel
> device directly in stead of the DRBD resource gives you a noticeable
> performance boost?
> 
> On Tuesday 08 June 2010 12:52:25 Gerry Kernan wrote:
> > Hi
> >
> > Yes sync is ok. And both resources are consistent. But some processes
> > that access the drbd resource are taking longed that before i enabled the
> > resources
> >
> > Gerry
> >
> >
> >
> > -----Original Message-----
> > From: drbd-user-bounces at lists.linbit.com
> >  [mailto:drbd-user-bounces at lists.linbit.com] On Behalf Of Bart Coninckx
> >  Sent: 08 June 2010 09:40
> > To: drbd-user at lists.linbit.com; Gerry Kernan
> > Subject: Re: [DRBD-user] slow preformance to remote server
> >
> > On Thursday 03 June 2010 16:10:18 Gerry Kernan wrote:
> > > Hi
> > >
> > > I have a 2 drbd resources setup to run to a remote servervia a 35Mb
> > >  wireless link. I am using prococol A and sync rate of 35M, are
> > > thereany other setting i can use to try and improve performance. Since
> > > turning ondrbd users on the system are complaining that process are
> > > taking longer to run.
> > >
> > > Thanks in advance
> > >
> > >
> > > Regards,
> > > Gerry Kernan
> > > InfinityIT
> > >
> > > Suite 17 The Mall,
> > > Beacon court,
> > > Sandyford,
> > > Dublin 18.
> > >
> > > p:+353-1-2930090
> > > f:+353-1-2930137
> >
> > If you use a sync rate of 35MB/sec the complete bandwidth will be used in
> >  case of a sync. Is a sync happening?
> >
> > B.
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> > drbd-user at lists.linbit.com
> > http://lists.linbit.com/mailman/listinfo/drbd-user
> 
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