I am not sure how/where you would check this but maybe the card is operating in simplex mode in which case I believe it makes sense you are getting approximately half of gigabit. Someone please correct me if I am wrong.
Moshe On Tuesday, March 1, 2011, David Burgess <apt....@gmail.com> wrote: > 2.0-RC1 (amd64) > built on Tue Mar 1 15:52:28 EST 2011 > > Core i3 550 3.2 GHz > 4GB RAM > Intel GBE > > I've just set this system up doing some crude throughput testing with > iperf. The most I can push through this box from LAN to WAN is a > steady 503-520 mbps, using the default mtu (higher mtu values produce > no throughput on iperf for reasons I haven't looked into. I'm > suspecting no support in the switch). top -SH is showing ~25% > interrupt usage and 30%+ idle on both cores. Hyperthreading is > disabled. I'm using a single NIC with vlans, but testing in only one > direction, so the NIC is sending and receiving a total of about 530 > mbit x2 during the test. > > iperf test machines show minimal CPU usage during the test, and have > no other significant network activity happening concurrently. The > switch is a Netgear ProSafe GS108E, which is ostensibly non-blocking. > > I expected better throughput than that. Any ideas what is holding this > thing back, or where I could look to find out? > > Thanks, > > db > > --------------------------------------------------------------------- > To unsubscribe, e-mail: support-unsubscr...@pfsense.com > For additional commands, e-mail: support-h...@pfsense.com > > Commercial support available - https://portal.pfsense.org > > -- ------------------------------ Moshe Katz KatzNet Computers -- mo...@ymkatz.net -- kohenk...@gmail.com -- mk...@zment.com -- mmk...@umd.edu -- kohenk...@aim.com -- moshek...@verizon.net -- kohenk...@inbox.com -- kohenk...@protonic.com -- +1(301)867-3732 --------------------------------------------------------------------- To unsubscribe, e-mail: support-unsubscr...@pfsense.com For additional commands, e-mail: support-h...@pfsense.com Commercial support available - https://portal.pfsense.org
