lkml.org 
[lkml]   [1998]   [Mar]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: GGI Project Unhappy On Linux
Date
Followup to:  <Pine.LNX.3.95.980329022921.12876D-100000@ferret.lmh.ox.ac.uk>
By author: Chris Evans <chris@ferret.lmh.ox.ac.uk>
In newsgroup: linux.dev.kernel
>
> Initially if we just aimed for mode switching in the kernel, maybe. Mode
> switching is very infrequent, and certainly not time critical. No-one is
> going to notice the extra overhead of an ioctl().
>
> But yes if accel requests get handled by the kernel we need to coalesce
> requests in userspace and transfer multiple commands to kernel space per
> syscall.
>

Don't forget, though, the high cost of kernel memory (although
kmod/kerneld helps with that aspect if performance isn't an issue.)

-hpa
--
PGP: 2047/2A960705 BA 03 D3 2C 14 A8 A8 BD 1E DF FE 69 EE 35 BD 74
See http://www.zytor.com/~hpa/ for web page and full PGP public key
I am Bahá'í -- ask me about it or see http://www.bahai.org/
"To love another person is to see the face of God." -- Les Misérables

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu

\
 
 \ /
  Last update: 2005-03-22 13:41    [W:0.046 / U:0.328 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site