Re: svn commit: r192544 - head/sys/kern

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From
Ed Schouten <ed@80386.nl>
Date
21 May 2009 16:30:22
Subject
Re: svn commit: r192544 - head/sys/kern
Message-ID
20090521163021.GK1271@hoeg.nl

In reply to
Kostik Belousov (svn-src-head) , Kostik Belousov
References to
Ed Schouten (svn-src-head) , Ed Schouten, Kostik Belousov (svn-src-head) , Kostik Belousov
Replies
Ed Schouten (svn-src-head) , Ed Schouten
Referenced by
Ed Schouten (svn-src-head) , Ed Schouten, Kostik Belousov (svn-src-head) , Kostik Belousov, Ed Schouten (svn-src-head) , Ed Schouten

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* Kostik Belousov <kostikbel@gmail.com> wrote:
> Why is this enabled by sysctl ? Such feature shall be unconditional if
> it has any value.
 
Because it reduces performance significantly. If I remember correctly,
UMTS devices (u3g, etc) have big buffer sizes. This means that we have
to zero a lot of memory.
 
The code was already present, but not enabled, so I thought it would
have been better to at least offer it as an easy to enable feature.
 
--
 Ed Schouten <ed@80386.nl>
 WWW: http://80386.nl/
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