Quote Originally Posted by suzaki
Harry and lilsirecho,

Please tell me the result of "ping ring.aist.go.jp". The time will take more than 100 msec.
Network latency is important factor.....
sure.
Code:
Pinging ring.aist.go.jp [150.29.9.6] with 32 bytes of data:

Reply from 150.29.9.6: bytes=32 time=249ms TTL=237
Reply from 150.29.9.6: bytes=32 time=250ms TTL=237
Reply from 150.29.9.6: bytes=32 time=250ms TTL=237
Reply from 150.29.9.6: bytes=32 time=249ms TTL=237

Ping statistics for 150.29.9.6:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 249ms, Maximum =  250ms, Average =  249ms
Of course I realize network latency is an issue (although there are ways to work around this. If one doesn't wait for every packet and every acknowledgement before requesting and sending the next packet, the problem goes away (a.k.a. sliding window). It's also important to not place too much importance on a ping; while it's a starting point, not all packets move at the same speed and a ping may move through a network a lot faster than some other packets.

But the real issue here is not just how long it takes me to ping the site in Japan, but how long it would take for someone in the United States to reach a site in the United States. What ping speeds are you seeing for your site from Japan? I know that in the United States I often see pings nearly 200 ms for servers in this country, and not infrequently a ping of a server in the US may take even longer than the above ping times to Japan. So as I say, it may be a matter of our infrastructure just not being up to the standards that yours is. Servers in Japan might serve SFS in Japan quite well, but putting a server in the U.S. may not solve all speed problems for U.S. users.