Hello all, I'm experiencing about 20MBit/s on a 100MBit/s ethernet connection when rsync'ing a lager number on _new_ files. I don't have much exeprience with rsync. I'dd just like to know if thi is an acceptable bw usage and what could be the limiting factors... in order to try to increase this speed. I'm considering using 1000MBit/s dedicated connections and so I'dd like to know if I will or won't get faster operations, or if I will still have this 20MBit bottleneck. Furthermore... is there a way to ask rsync to be slower ?!? thank you joao
At 10:37 22.04.2008 +0100, Joao Ferreira gmail wrote:>Hello all, > >I'm experiencing about 20MBit/s on a 100MBit/s ethernet connection when >rsync'ing a lager number on _new_ files. > >I don't have much exeprience with rsync. I'dd just like to know if thi >is an acceptable bw usage and what could be the limiting factors... in >order to try to increase this speed. > >I'm considering using 1000MBit/s dedicated connections and so I'dd like >to know if I will or won't get faster operations, or if I will still >have this 20MBit bottleneck. > >Furthermore... is there a way to ask rsync to be slower ?!?How do you call rsync? Do you use zipping? What are the used machines (CPU type/freq)? We had the case that rsyncing to a NAS was not that fast because the used CPU couldn't hold up. Another reason might be the used rsync protocol, what rsync version do you use? bye Fabi
> > How do you call rsync? > > rsync -av --delete --perms --acls ...You left out the rest. Specifically, what protocol are you using over the ethernet? Are you using an rsync server, ssh, NFS, SMB, or what? A straight rsync server is by far the fastest, I've found. So you'd do something like so: rsync -av ... /local/path/ hostname::modulename/remote/path/ ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ
As an example, I transfered 1930420 KBytes with rsync between two 2.8 GHz Intel P4 machines over gigabit ethernet and got this: transfer method: ssh rsh nfs rsync wall time in sec 130.01 79.77 176.03 74.92 MBit/sec 116 189 86 201 Mind you, this is no benchmark as I only did each on once and wasn't particularly careful that nothing else was running on the two machines or on the network. ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ -------------- next part -------------- HTML attachment scrubbed and removed