Hello,
With your advice, local-to-local I saw speeds of 650MByte per sec--10%
faster than IIS! I have an idea for futher speed:
procedure TIcsBufferHandler.Lock;
begin
EnterCriticalSection(FCritSect);
end;
{* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*}
procedure TIcsBufferHandler.UnLock;
begin
LeaveCriticalSection(FCritSect);
end;
We use NO_ADV_MT. Shouldn't these be IFNDEF'ed for it?
Best Regards,
SZ
On Thu, Sep 29, 2011 at 18:04, Angus Robertson - Magenta Systems Ltd <
an...@magsys.co.uk> wrote:
> > I mean I have on my server in Canada IIS and our ICS server. When I
> > download from there with high latency and high bandwidth,
>
> On the same physical hardware with different ports or IPs?
>
> IIS runs as a kernel driver, so is more efficient than Windows
> applications.
>
> >I had read that I need to increase window size. I have
> > made it 128KB and now the download speed is 180KB/s.
>
> So it's now much slower?
>
> The difference could be down to TCP settings, with slow latency the round
> trip time to acknowledge packets causes the speed to slow down, so
> allowing TCP to send more packets without waiting for ACK packets speeds
> things up.
>
> On my WAN, I've tested downloads from the ICS FTP server with the ICS FTP
> client at almost 500Mbits/s, and I can download from (decent) low latency
> (10ms) public FTP servers at over 50Mbits/s which is my maximum cable
> modem speed. That's with 64K TCP buffers.
>
> But I can not test the ICS web server at those speeds, I have an old
> firewall in front of my public server which limits the maximum speed to
> about 15Mbits/s.
>
> IIS7 - http://www.magsys.co.uk/download/testing/speed50meg.zip
>
> ICS v7 - http://www.telecom-tariffs.co.uk/testing/speed50meg.zip
>
> ICS is slower but is still using the default 8K TCP sockets, not got
> around to increasing the TCP buffer size yet, do most testing with FTP.
>
> Angus
>
>
> --
> To unsubscribe or change your settings for TWSocket mailing list
> please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket
> Visit our website at http://www.overbyte.be
>
--
To unsubscribe or change your settings for TWSocket mailing list
please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket
Visit our website at http://www.overbyte.be
