[ENBD] 2.4.32 conclusions

Peter T. Breuer ptb at it.uc3m.es
Thu Mar 11 12:50:58 MST 2004


"Also sprach Anders Blomdell:"
> 
> >> Not for production right now I think...
> > Well, it's the approved way in 2.4 of doing bufferless i/o. I don't see 
> > the problem.
> Cross-writing is the problem, not bufferless i/o. There are to many knobs 
> to
> tweak, so I'll leave that for now.

Well, I presume it's a question of doing

 /sbin/raw /dev/raw0 /dev/nda
 /usr/sbin/enbd-server 2004 /dev/raw0

which doesn't look bad to me!


> >> 1/3 of writing speed when cross-writing as opposed to a pure 
> >> 1master-2slave
> >> configuration. I'll leave it until I can experiment with the old servers.
> >> .
> >> .
> >
> > It sounds like a consequence of the server maxing cpu, which is the strange
> > item that needs to be investigated.
> Agreed, but I don't have much time to spare.

OK.

Peter


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