Hi Thomas, Thomas Maier-Komor wrote:
> > Carsten, > > the summary looks like you are using mbuffer. Can you elaborate on what > options you are passing to mbuffer? Maybe changing the blocksize to be > consistent with the recordsize of the zpool could improve performance. > Is the buffer running full or is it empty most of the time? Are you sure > that the network connection is 10Gb/s all the way through from machine > to machine? Well spotted :) right now plain mbuffer with plenty of buffer (-m 2048M) on both ends and I have not seen any buffer exceeding the 10% watermark level. The network connection are via Neterion XFrame II Sun Fire NICs then via CX4 cables to our core switch where both boxes are directly connected (WovenSystmes EFX1000). netperf tells me that the TCP performance is close to 7.5 GBit/s duplex and if I use cat /dev/zero | mbuffer | socat ---> socat | mbuffer > /dev/null I easily see speeds of about 350-400 MB/s so I think the network is fine. Cheers Carsten _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
