[lkml]   [2006]   [Apr]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Linux 2.6.17-rc2
El Wed, 19 Apr 2006 11:44:25 -0700 (PDT),
Linus Torvalds <> escribió:

> Anyway, when would you actually _use_ a kernel buffer? Normally you'd use
> it it you want to copy things from one source into another, and you don't

Thanks,I wonder it splice can be useful for more cases than just high-bandwith
blind transference of data? For example, in as of today, I think that
pixmaps need to be copied from the client adress space to the server. Because is network-oriented the pixmaps must be sent even in local machines,
(in order to save memory when clients move a pixmap to the server they must
free it in their address space, because extra copies mean high memory usage,
at some point nautilus was keeping three copies of the desktop background
in memory)

There're shared memory extensions in commercial X servers which I think
they fix this for local usage (there're rumors that Sun may port and
contribute their Xsun shared memory implementation to in the
future), but I wonder if splice could be an alternative aswell? Or
maybe splice is not a good option when you need several MB? (if the buffer
size becomes tweakable in the future)
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2006-04-20 15:24    [W:0.124 / U:38.120 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site