lkml.org 
[lkml]   [2009]   [Jan]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 1/3] epoll: increase default max_user_instances to 1024
On Wed, 28 Jan 2009, Vegard Nossum wrote:

> On Wed, Jan 28, 2009 at 6:32 AM, Bron Gondwana <brong@fastmail.fm> wrote:
> > That's clearly not happening here - so it seems that maybe our "happy
> > medium" is actually in closer inspection of what's going on rather than
> > a blanket low N to keep N^2 down.
>
> Mh, could another solution to this all be to limit the number times
> you can add a single epoll descriptor to another descriptor's set?

In the example that was posted, a single fd was added a single time inside
the other 1000+ fds. Epoll already has detection for too long chains and
closed loops, but you can't put those in the fast path. And epoll_ctl() is
one of those.


- Davide




\
 
 \ /
  Last update: 2009-01-28 17:55    [W:0.216 / U:0.008 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site