lkml.org 
[lkml]   [2006]   [Aug]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [take6 1/3] kevent: Core files.
    On Thu, Aug 10, 2006 at 05:56:39PM -0700, Andrew Morton (akpm@osdl.org) wrote:
    > > Per kevent fd.
    > > I have some ideas about better mmap ring implementation, which would
    > > dinamically grow it's buffer when events are added and reuse the same
    > > place for next events, but there are some nitpics unresolved yet.
    > > Let's not see there in next releases (no merge of course), until better
    > > solution is ready. I will change that area when other things are ready.
    >
    > This is not a problem with the mmap interface per-se. If the proposed
    > event code permits each user to pin 160MB of kernel memory then that would
    > be a serious problem.

    The main disadvantage is that all memory is allocated on the start even
    if it will not be used later. I think dynamic grow is appropriate
    solution, since user will have that memory used anyway, since kevents
    are allocated, just part of them will be allocated from possibly
    mmaped memory.

    --
    Evgeniy Polyakov
    -
    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: 2006-08-11 08:19    [W:4.516 / U:0.308 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site