Re: svn commit: r1586391 - in /subversion/branches/thunder: BRANCH-README notes/thundering-herd.txt

On 10 April 2014 22:08, <stefan2_at_apache.org> wrote:
> Author: stefan2
> Date: Thu Apr 10 18:08:45 2014
> New Revision: 1586391
>
> URL: http://svn.apache.org/r1586391
> Log:
> On the thunder branch: Add problem description and BRANCH-README.
>
> * BRANCH-README
> (): New file.
>
> * notes/thundering-herd.txt
> (): New file describing the problem and the attempted solution.
>
> Added:
> subversion/branches/thunder/BRANCH-README
> subversion/branches/thunder/notes/thundering-herd.txt
Hi Stefan,

I hope you are just experimenting and not going to merge it to trunk.
Otherwise I'm -1 on this approach:
1. The problem should be solved on topmost layer (MPM) or lowest (OS
disk/CPU scheduling).
2. Delaying access at cache layer is guaranteed way to have sporadic
dead locks and lockups. And these lockups will be extremely hard to
reproduce since they will happen only in heavy loaded scenarios.

-- 
Ivan Zhakov
CTO | VisualSVN | http://www.visualsvn.com