Robert Schiele schrieb:
On Fri, Sep 09, 2005 at 02:32:05PM +0200, Carl-Daniel Hailfinger wrote:
Eberhard Moenkeberg schrieb:
Exactly; it would force the server to behave like with "--checksum" even if the server has disabled it.
Except that it needs fewer processor cycles. But I see your point about server IO bottlenecks.
Why does it need fewer processor cycles?
I assumed CRC32 needs less processor cycles than MD4, but you are right, this was an assumption and is likely to be wrong.
Have you ever seen a pure file server where processor usage is the limiting factor?
Yes, but that machine had a fast nic and the working set completely fit into RAM. Since ftp.gwdg.de (and probably all public mirror servers) does not have enough RAM to keep its working set completely in memory (and even if it had, it would probably be network-bound), --size-only is the way to go for syncing. So you're right on both counts. Thanks for correcting me, Carl-Daniel