lkml.org 
[lkml]   [2007]   [Feb]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [patch] mm: NUMA replicated pagecache
    On Tue, 13 Feb 2007, Nick Piggin wrote:

    > This is a scheme for page replication replicates read-only pagecache pages
    > opportunistically, at pagecache lookup time (at points where we know the
    > page is being looked up for read only).

    The problem is that you may only have a single page table. One process
    with multiple threads will just fault in one thread in order to
    install the mapping to the page. The others threads may be running on
    different nodes and different processors but will not generate any
    faults. Pages will not be replicated as needed. The scheme only seems to
    be working for special cases of multiple processes mapping the same file.

    -
    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: 2007-02-14 20:03    [W:3.462 / U:0.520 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site