Re: [Etherboot-discuss] Throughput issues with gpxe

[Miller, S. <Sha...@yr...>]

Ok.  I'm sorry about the redundancy.  I only offered that because I
thought you would want to get past your hanging error and actually get
to try out whatever TCP window size you had chosen.  It seems that you
aren't even getting the chance to try your choice, since you aren't
getting to the point of downloading
tftp://${next-server}/pxelinux.cfg/default.

 

Does the information at
http://www.ncsa.uiuc.edu/~vwelch/net_perf/tcp_windows.html help at all?
In there, it suggests a formula for choosing a TCP window size.  I sort
of suspect that your original question would have an answer something
like: a) gPXE's current value should be functional (lots of folks use
it) and b) tuning it to be optimal depends on your situation...  I'm not
sure there's a good Universal "optimal" beyond what's in place.

 

Sorry I couldn't help.

 

- Shao Miller

________________________________

From: Mario Spinthiras [mailto:spi...@gm...] 
Sent: Thursday, May 28, 2009 21:17
To: Miller, Shao
Cc: eth...@li...
Subject: Re: [Etherboot-discuss] Throughput issues with gpxe

 

Hello Shao,

 While I would like to thank you for a reply I would like to inform you
that the information you provided is clear from RTFM from the website.
There is nothing new to that. My question still stands clear in its
context ; Has anyone played with the hardcoded value of the tcp window
size in tcp.h of the gpxe sourcecode?

Regards,
Mario.