lkml.org 
[lkml]   [2008]   [Mar]   [24]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateMon, 24 Mar 2008 12:42:14 -0700
From"Ulrich Drepper" <>
SubjectRe: [PATCH prototype] [0/8] Predictive bitmaps for ELF executables
On Sun, Mar 23, 2008 at 10:16 PM, Nicholas Miell <nmiell@comcast.net> wrote:
>  The limit is filesystem dependent -- I think ext2/3s is something like
>  4k total for attribute names and values per inode.
>
>  That's more than enough space for the largest executable on my system
>  (emacs at 36788160 bytes) which would have a 1123 byte predictive bitmap
>  (plus space for the name e.g. "system.predictive_bitmap"). The bitmap
>  also could be compressed.

4k attribute means support for about 32768 pages.  That's a total of
134MB.  I think this qualifies as sufficient.  Also, I assume the
attribute limit is just a "because nobody needed more so far" limit
and could in theory be extended.
--
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: 2008-03-24 20:45    [from the cache]
©2003-2008