Jan Catrysse wrote: > Hello all, > > I am having some problems with NFS and slow performance. > This is the scenario: > > 2x FreeBSD 7.1. (Raid storage server, MP, the works) > > GB Lan interface between them. > > When I transfer 1 big file the speed is never higher than 10MB/s with a peak > to 14MB/s. > > When I transfer multiple files at the same time speed is about 10MB/s per > thread. > Disk speed > 100MB/s > > Network speed using samba > 60MB/s (limited by clients disk speed) > > Tried enabling NFSlockd, NFSstatd but that changes nothing. > > Any help or hunch would be greatly appreciated.
Here are some ideas for testing: * Any firewall in between them? Do you have network errors? * Any other network problems, like DNS lookup failures? (not that it should matter for sustained tranfers but still...) * Are you using TCP or UDP for NFS? TCP should be better in all cases. * Have you monitored the system with "top"? Try hitting "S" and "H" in top while transfering files, see if anything looks suspicious. * Run "iostat 1", check tps and KB/t. * What file system are you using?
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