Subject: Re: increasing NMBCLUSTERS
To: Roberto <roberto@redix.it>
From: Jason Thorpe <thorpej@shagadelic.org>
List: tech-net
Date: 09/29/2005 09:01:57
On Sep 29, 2005, at 8:43 AM, Roberto wrote:

>> Hum
>> 183151 - 117629 = 65522, so this really makes 32761 pages.
>> Looks like a leak somewhere, because it seems these clusters are not
>> attached to mbufs (there isn't 65522 mbufs allocated).
>>
>
> Sorry but I do not understand what you figure out: why 65522 makes  
> 32761
> pages? and why seems to you not attached to mbufs?

A "mbuf cluster" is a 2K buffer, which means 2 per page on x86.

Normally, a cluster is always attached to an mbuf.  If there are more  
clusters in use than mbufs, then it means clusters are getting leaked  
somewhere.

-- thorpej