Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi,
Indeed Protocol A(write speed 10MB/Min) has given
double the write speed over Protocol C(write speed 6
MB/min). But still the write is slow. Any way the WAN
Link is only 2 Mbps. I would try to increase the WAN
link speed. I am going to use this across IDC. So the
link will be burstable(Uplink 10 Mbps) i think.
short write burst - how to increase/decrease this
value.
Do I need to increase the RAM. Currently it has 2 GB
RAM with dual processor.
Is there any other parameter to fine tune, so that
it does not affects other resource like mem. or write
performance.
-- SKM
--- Luciano Miguel Ferreira Rocha
<strange at nsk.no-ip.org> wrote:
> On Wed, Aug 16, 2006 at 08:20:46AM -0700, khaja
> mohideen wrote:
> > Hi,
> >
> > I am using drbd 0.7.20 in debian 3.1. I have
> setup
> > drbd in such that Primary Server(host A) is
> located in
> > our office. Secondary Server(host B) i.e., that
> the
> > backup is located in remote office. It's
> connected
> > via VPN.
> >
> > The write performance is heavily degraded. I
> have
> > used Protocol A & sndbuf-size 512k . Still the
> same
> > results. am I missing anything. Pls advice/guide
> me
> > to tweak the write performance.
>
> Write performance will always be limited by network
> performance.
> Protocol A will only give an advantage if you have
> short write bursts.
> Otherwise, your system's memory will get full very
> fast.
>
> > Also can drbd support a single backup/mirror
> server
> > for multiple primary servers. i.e., Multiple
> > Partitions from multiple servers(host1, host2)
> need to
> > replicate to mulitiple paritions on a single
> secondary
> > server(Host B).
>
> Yes, the peers are defined for each resource. You're
> not limited to the
> same one.
>
> --
> lfr
> 0/0
> _______________________________________________
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>
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