lkml.org 
[lkml]   [2002]   [Dec]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: Intel P6 vs P7 system call performance
From
Date
On Wed, 2002-12-18 at 05:34, Jeremy Fitzhardinge wrote:
> The P4 optimisation guide promises horrible things if you write within
> 2k of a cached instruction from another CPU (it dumps the whole trace
> cache, it seems), so you'd need to be careful about mixing mutable data
> and the syscall code in that page.

The PIII errata promise worse things with SMP and code modified as
another cpu ruins it and seems to mark them WONTFIX, so there is another
dragon to beware of

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:31    [W:0.143 / U:1.004 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site