[Beowulf] from the "I don't remember if its possible" file ...

atchley tds.net atchley at tds.net
Wed Apr 3 08:40:43 PDT 2013


Also, check out the discussion here as to why that may be a bad solution
(but one that I use as well):

http://kerneltrap.org/mailarchive/linux-netdev/2008/9/8/3233474/thread

Scott


On Fri, Mar 22, 2013 at 4:09 PM, Joe Landman <
landman at scalableinformatics.com> wrote:

> On 03/22/2013 01:57 PM, Bernd Schubert wrote:
> > On 03/22/2013 06:18 PM, Joe Landman wrote:
> >> Hi folks:
> >>
> >>     We are working on something where we can't necessarily change source
> >> code, but would like to alter the default open parameters of network
> >> sockets (or a group of network sockets).
> >>
> >>     Is there any way to do this in general?  Basically, we want to set
> >> TCP_NODELAY on a set of applications sockets.  Doesn't have to be in
> >> general across the machine, and we could probably do this in a cgroup or
> >> similar construct.  I just don't remember if there is an easy way to do
> >> this w/o source mods.
> >
> >
> > Hmm, a very quick search if this has been done already (search
> > options: "LD_PRELOAD setsockopt" reveals:
> >
> > http://bogomips.org/libnodelay.git
> >
>
> ... and its Bernd for the win :) Thanks, just what the Doctor ordered.
> Solves the problem the way we need.
>
>
>
>
> --
> Joseph Landman, Ph.D
> Founder and CEO
> Scalable Informatics, Inc.
> email: landman at scalableinformatics.com
> web  : http://scalableinformatics.com
>         http://scalableinformatics.com/siflash
> phone: +1 734 786 8423 x121
> fax  : +1 866 888 3112
> cell : +1 734 612 4615
>
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