Hi all, We have a recent FreeBSD 10.1 installation here that is supposed to act as nfs (v3) client to an Oracle x4-2l server running Soalris 11.2. We have Intel 10-Gigabit X540-AT2 NICs on both ends, iperf is showing plenty of bandwidth (9.xGB/s) in both directions. However, nfs appears to be terribly slow, especially for writing:
root@crest:~ # dd if=/dev/zero of=/net/hellpool/Z bs=1024k count=1000 1000+0 records in 1000+0 records out 1048576000 bytes transferred in 20.263190 secs (51747824 bytes/sec) Reading appears to be faster, but still far away from full bandwidth: root@crest:~ # dd of=/dev/null if=/net/hellpool/Z bs=1024k 1000+0 records in 1000+0 records out 1048576000 bytes transferred in 5.129869 secs (204406000 bytes/sec) We have already tried to tune rsize/wsize parameters, but they appear to have little (if any) impact on these results. Also, neither stripping down rxsum, txsum, tso etc. from the interface nor increasing MTU to 9000 for jumbo frames did improve anything. It is quite embarrassing to achieve way less than 1GBE performance with 10GBE equipment. Are there any hints what else might be causing this (and how to fix it)? cu Gerrit _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
