Re: Slowness and sparse files

2009-04-29 Thread Jeremy Sanders
Andrew Gideon wrote: > It may be clear to others, but I'm missing what you mean by this. I > gather that rsh yielded poor results. What did you do for > "simple data copy tests" that did well? Sorry for being unclear: # ttcp -s -l 819200 -t xbackX ttcp-t: buflen=819200, nbuf=2048, align=16384/

Re: Slowness and sparse files

2009-04-29 Thread Andrew Gideon
On Wed, 29 Apr 2009 10:58:21 +0100, Jeremy Sanders wrote: > I've tried switching to rsh, but that doesn't help a great deal. I get > close to maximum gigabit speeds in simple data copy tests however. It may be clear to others, but I'm missing what you mean by this. I gather that rsh yielded poo

Slowness and sparse files

2009-04-29 Thread Jeremy Sanders
Hi - I'm trying to diagnose a slow rsync problem. I'm trying to rsync a lot of fresh data between two systems with gigabit ethernet, but using ssh. The systems have large RAID disks, with pretty fast read and write benchmarks (>100MB/s). Both systems are running Fedora 10 Linux. I only get arou