Re: Problem identified: WAPL/RAIDframe performance problems

[mlelstv%serpens.de@localhost (Michael van Elst)]

gdt%ir.bbn.com@localhost (Greg Troxel) writes:

>I wonder if it's possible (easily) to make the log only use fsbize
>boundaries, (maybe forcing it to be bigger as a side effect.)

Writing filesystem blocks won't help. RAIDframe needs writes as large
as a stripe.

The log itself could write much larger chunks but flushing is done
in a series of writes as small as a single physical block. I think
the only way to improve that is to copy everything first into a
large buffer. Not very efficient.


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                                Michael van Elst
Internet: mlelstv%serpens.de@localhost
                                "A potential Snark may lurk in every tree."