This is what we use, though it is not special to 10GbE; I've no doubt many people will have their own schemes. It's from a script that checks settings against our design:
NETWORK TUNING PARAMETERS TCP parameters: tcp_wscale_always: current: 1 recommended: 1 tcp_tstamp_if_wscale: current: 1 recommended: 1 tcp_xmit_hiwat: current: 1048576 recommended: 1048576 tcp_recv_hiwat: current: 1048576 recommended: 1048576 tcp_cwnd_max: current: 2097152 recommended: 2097152 tcp_max_buf: current: 4194304 recommended: 4194304 tcp_time_wait_interval: current: 60000 recommended: 60000 tcp_conn_req_max_q: current: 8192 recommended: 8192 Sendpipes & Recvpipes: route <x.x.x.x> recvpipe: current: 1048576 recommended: 1048576 route <x.x.x.x> sendpipe: current: 1048576 recommended: 1048576 I'd say the hiwat settings are the most important, and tcp_cwnd_max and tcp_max_buf must be raised to allow for that. We are also implementing Jumbo Frames which in testing made about 60-80% increase in throughput using iperf. Slightly harder to test with NetBackup as more moving parts like disks involved, and for many clients we cannot set it as we don't have a separate backup LAN, and some applications don't want to try it. William D L Brown -----Original Message----- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Tschida, Tom (STP) Sent: 01 February 2010 22:29 To: veritas-bu@mailman.eng.auburn.edu Subject: [Veritas-bu] Any gotchas with 10 GB Ethernet? Hello All, We are in the process of implementing 2 new Solaris media servers with 10 GB Ethernet. Are there any gotchas on the OS side or the NetBackup side I should be aware of? Any buffer settings we need to tweak or new touch files, etc? Thanks in advance. Tom Tschida Boston Scientific _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ----------------------------------------------------------- This e-mail was sent by GlaxoSmithKline Services Unlimited (registered in England and Wales No. 1047315), which is a member of the GlaxoSmithKline group of companies. The registered address of GlaxoSmithKline Services Unlimited is 980 Great West Road, Brentford, Middlesex TW8 9GS. ----------------------------------------------------------- _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu