...
TCP options string = 020405ac0103030101010402
MTU = 1492
MTU is optimized for PPoE DSL broadband. If not, consider raising MTU to 1500 for optimal throughput.
MSS = 1452
MSS is optimized for PPPoE DSL broadband. If not, consider raising your MTU value.
Default TCP Receive Window (RWIN) = 65536
RWIN Scaling (RFC1323) = 1 bits (scale factor: 2^1=2)
Unscaled TCP Receive Window = 32768
You seem to be using Google Chrome. Note that Chrome can modify the TCP Window for sockets it creates under some OSes, and therefore servers may not get your correct RWIN value. You may want to test with a different browser. FAQ
RWIN is not fully optimized. The unscaled RWIN value is lower than it should be. Also, RWIN being close to and above 65535 does not justify the header overhead of enabling TCP 1323 Options. You might want to use one of the recommended RWIN values below.
For optimum performance, consider changing RWIN to a multiple of MSS.
Other RWIN values that might work well with your current MTU/MSS:
63888 (up to 2 Mbit lines, depending on latency. MSS * 44)
127776 (1-5 Mbit lines, depending on latency. MSS * 44 * 2)
255552 (2-14 Mbit lines, depending on latency. MSS * 44 * 2^2)
511104 (8-30 Mbit lines, depending on latency. MSS * 44 * 2^3)
1022208 (25-60 Mbit lines depending on latency. MSS * 44 * 2^4)
bandwidth * delay product (Note this is not a speed test):
Your TCP Window limits you to: 2621 kbps (328 KBytes/s) @ 200ms
Your TCP Window limits you to: 1049 kbps (131 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 50 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000 (0)
[/quote]
