On 11/10/05, Robert Watson <[EMAIL PROTECTED]> wrote: > On Wed, 9 Nov 2005, Mike Jakubik wrote: > > > I have done many tests to try to determine the poor performance on my > > systems (FreeBSD-current connected directly to Windows XP via identical > > Intel Pro 1000 cards) and my only conclusion is that Samba on FreeBSD > > when talking to a Windows box is simply fubared. Im willing to bet thats > > not the case on Linux. I can get great speeds (~30MB/s) using ftp > > between the machines, but when i use Samba, i get a maximum of 11MB/s. I > > have tried playing with mtu size, samba options, polling, but there does > > not seem to be any visible bottlenecks, its just simply slow. It would > > be great if someone could get to the bottom of this, its quite > > frustrating. > > There are a number of TCP related configuration frobs on FreeBSD. It > would be quite interesting to know how modifying each of the following > settings affects Samba performance: > > net.inet.tcp.delayed_ack > net.inet.tcp.sack.enable > net.inet.tcp.inflight.enable > > There has been recent evidence that the inflight bandwidth calculation is > having problems generating stable performance at high bandwidth and low > latency, so I might try that one first. > > Robert N M Watson
I just tested on my home machine and delayed_ack and sack.enable have little or no effect on the results. inflight.enable on the other hand had a huge impact! With the file cached I've gone from flat 5.5MB/s up to also flat 7.2MB/s It's an improvement but there is still a difference up to those theoretical 12.5MB/s on a 100mbit link -- Joao Barros _______________________________________________ freebsd-performance@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "[EMAIL PROTECTED]"
