[DRBD-user] slow preformance to remote server

[Bart Coninckx]

And reading?

On Tuesday 08 June 2010 14:43:30 Gerry Kernan wrote:
> Hi Bart,
> 
> I can create a 1Gb file on /dev/cciss/c0d0p2 in 1.73 sec  on /dev/drbd0 it
>  take 35 sec
> 
> 
> Gerry
> 
> 
> -----Original Message-----
> From: Bart Coninckx [mailto:bart.coninckx at telenet.be]
> Sent: 08 June 2010 13:35
> To: Gerry Kernan
> Cc: drbd-user at lists.linbit.com
> Subject: Re: [DRBD-user] slow preformance to remote server
> 
> 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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> >
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