Re: [RFC][PATCH 0/5] relayfs

Tom Zanussi
2003-07-15T15:47:43Z

Gianni Tedesco writes:
> On Tue, 2003-07-15 at 16:15, Tom Zanussi wrote:
> > The following 5 patches implement relayfs, adding a dynamic channel
> > resizing capability to the previously posted version.
> >
> > relayfs is a filesystem designed to provide an efficient mechanism for
> > tools and facilities to relay large amounts of data from kernel space
> > to user space. Full details can be found in Documentation/filesystems/
> > relayfs.txt. The current version can always be found at
> > http://www.opersys.com/relayfs.
>
> Could this be used to replace mmap() packet socket, how does it compare?

I think so - you could send high volumes of packet traffic to a bulk
relayfs channel and read it from the mmap'ed relayfs file in user
space. The Linux Trace Toolkit does the same thing with large volumes
of trace data - you could look at that code as an example
(http://www.opersys.com/relayfs/ltt-on-relayfs.html).

Tom

>
> --
> // Gianni Tedesco (gianni at scaramanga dot co dot uk)
> lynx --source www.scaramanga.co.uk/gianni-at-ecsc.asc | gpg --import
> 8646BE7D: 6D9F 2287 870E A2C9 8F60 3A3C 91B5 7669 8646 BE7D
>

--
Regards,

Tom Zanussi <zanussi@us.ibm.com>
IBM Linux Technology Center/RAS