Thanks for reply.
Nicolas Gieczewski wrote:
On Thu, 31 May 2007 22:06:39 +0800, Pang <[EMAIL PROTECTED]> wrote:
Recently, I have leased a rack in Asianetcom and some bandwidth.
However, the speed for my curcuit is substantially slower than my
provider's company site.
[...]
*This server is using FreeBSD 6.2 patch 4 with Apache in the port tree.
The kernel is custom built but I haven't made any modification in sysctl
I have asked many techs in Asianetcom and they blamed on TCPIP window
sizing.
I used to have the same problem with my FreeBSD dedicated servers in the U.S.
when I was living in South America with a latency of ~200 ms. Given identical
hardware and connectivity, I could max out my download speed when downloading
from a server running Linux, but would get no more than 100-150 KB/s when
downloading from an otherwise identical FreeBSD box.
The solution was to increase the size of the TCP send window on the FreeBSD
server to about 128 KB--the default of 32 KB turned out to be way too small.
# sysctl net.inet.tcp.sendspace=131072
After modifying this value, you need to restart any processes (e.g. Apache)
that you want to take advantage of the change.
It doesn't work. I am still getting ~10KB/s speed.
Hope it helps.
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Thanks
Pang
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