Dai Ngo wrote: >Henrik Johansen wrote: >> [Dai Ngo] wrote: >>> Henrik Johansen wrote: >>>> Henrik Johansen wrote: >>>>> Piyush Shivam wrote: >>>>>> On 08/05/09 15:53, Henrik Johansen wrote: >>>>>>> Hi list, >>>>>>> >>>>>>> I have 2 servers which are directly connected via ixgbe based >>>>>>> nics, both >>>>>>> running OpenSolaris 2009.06. >>>>>>> >>>>>>> The actual network connection seems fine, iperf reports ~6.3 >>>>>>> Gbits/sec >>>>>>> in terms of throughput and nicstat seems to agree that the nics >>>>>>> are ~63% >>>>>>> utilized. >>>>>>> Iperf : henrik at opensolaris:~# ./iperf-2.0.4/src/iperf -c >>>>>>> 10.10.10.2 -N -t 40 >>>>>>> ------------------------------------------------------------ >>>>>>> Client connecting to 10.10.10.2, TCP port 5001 >>>>>>> TCP window size: 391 KByte (default) >>>>>>> ------------------------------------------------------------ >>> Can you verify the TCP window size on both client and server system >>> with this command: >>> >>> # ndd -get /dev/tcp tcp_xmit_hiwat >>> >>> # ndd -get /dev/tcp tcp_recv_hiwat >> >> Both client and server have both set to 400000. >> >Can you try 1024000, this is the default in snv_119. >Did you verify the new setting take effect on NFS connections?
I have just updated them to 1024000 (on both client and server). henrik at opensolaris:/# ptime cp /tmpfs/testfile_5g /nfs real 1:17.571581221 user 0.016147465 sys 13.271892825 That gives ~66 mb/s. CPU's and the 10 Gbit nic's are almost idle during this operation. >-Dai -- Med venlig hilsen / Best Regards Henrik Johansen
