performance with >50GB files

Wayne Davison wayned at
Tue Jan 10 19:29:53 GMT 2006

On Tue, Jan 10, 2006 at 07:46:19PM +0100, Ren? Rebe wrote:
> of course the dual cpu ppc64 receiver is idling waiting for any data
> to arrive.

There is a known problem with really large numbers of blocks: the hash
search algorithm gets too many collisions, and the search routine bogs
down.  This sounds like what is happening to you.  Unfortunately, I can
offer no suggestions for relief other than breaking up the file(s) into
smaller parts.


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