Re: how to increase through put of LAN to 1GB

[Bartek Krawczyk <bbartlomiej.mail@gmail.com>]

2012/6/22 Muhammad Yousuf Khan <sirtcp@gmail.com>:
> root@nasbox:/# iperf -c 10.X.X.7 -r -u -b 1024M
> ------------------------------------------------------------
> Server listening on UDP port 5001
> Receiving 1470 byte datagrams
> UDP buffer size:  110 KByte (default)
> ------------------------------------------------------------
> ------------------------------------------------------------
> Client connecting to 10.X.X.7, UDP port 5001
> Sending 1470 byte datagrams
> UDP buffer size:  110 KByte (default)
> ------------------------------------------------------------
> [  4] local 10.X.X.15 port 59300 connected with 10.X.X.7 port 5001
> [ ID] Interval       Transfer     Bandwidth
> [  4]  0.0-10.0 sec   777 MBytes   652 Mbits/sec
> [  4] Sent 554058 datagrams
> [  4] Server Report:
> [  4]  0.0-10.0 sec   773 MBytes   648 Mbits/sec   0.057 ms 2895/554057 (0.52%)
> [  4]  0.0-10.0 sec  1 datagrams received out-of-order
> [  3] local 10.X.X.15 port 5001 connected with 10.X.X.7 port 40630
> [  3]  0.0-10.0 sec   585 MBytes   490 Mbits/sec   0.053 ms 393567/810629 (49%)
> [  3]  0.0-10.0 sec  1 datagrams received out-of-order
>
>
> lion:/mnt/vmbk# iperf -s -u
> ------------------------------------------------------------
> Server listening on UDP port 5001
> Receiving 1470 byte datagrams
> UDP buffer size:   130 KByte (default)
> ------------------------------------------------------------
> [  3] local 10.X.X.7 port 5001 connected with 10.X.X.15 port 59300
> [ ID] Interval       Transfer     Bandwidth       Jitter   Lost/Total Datagrams
> [  3]  0.0-10.0 sec    773 MBytes    648 Mbits/sec  0.058 ms 2895/554057 (0.52%)
> [  3]  0.0-10.0 sec  1 datagrams received out-of-order
> ------------------------------------------------------------
> Client connecting to 10.X.X.15, UDP port 5001
> Sending 1470 byte datagrams
> UDP buffer size:   130 KByte (default)
> ------------------------------------------------------------
> [  3] local 10.X.X.7 port 40630 connected with 10.X.X.15 port 5001
> [  3]  0.0-10.0 sec  1.11 GBytes    953 Mbits/sec
> [  3] Sent 810631 datagrams
> [  3] Server Report:
> [  3]  0.0-10.0 sec    585 MBytes    490 Mbits/sec  0.053 ms 393567/810629 (49%)
> [  3]  0.0-10.0 sec  1 datagrams received out-of-order

So you can get about 700Mbps of TCP traffic and ideally 953Mbit of UDP
traffic. Try tuning your server-client applications and those sysctl
parameters which I posted you in my first reply.

Regards,
-- 
Bartek Krawczyk