Networking/Discussion/Networking Drivers/ increase mbuf cluster size/List of Posts
 
Forum Topic - increase mbuf cluster size: (2 Items)
   
Update
Yurong Sun
03/09/2012 11:24 AM
post92020
increase mbuf cluster size   
Hi,

I would like to create an mbuf with cluster size to be 4K or 8K bytes. (Seems default is 2K). Is there anyway to do that
? Can I use sysctl to change kern.mbuf.mclbytes? 

Thanks a lot!

Yurong
Sean Boudreau(deleted)
03/09/2012 11:35 AM
post92023
Re: increase mbuf cluster size   
The sysctl is read only.  All sorts of things would break if
this changed out from under other drivers.

You can change it on the command line with:

# io-pkt -p tcpip mclbytes=4096

But your driver should also handle the defaults.

-seanb

On Fri, Mar 09, 2012 at 11:24:51AM -0500, Yurong Sun wrote:
> Hi,
> 
> I would like to create an mbuf with cluster size to be 4K or 8K bytes. (Seems default is 2K). Is there anyway to do 
that? Can I use sysctl to change kern.mbuf.mclbytes? 
> 
> Thanks a lot!
> 
> Yurong 
> 
> 
> 
> _______________________________________________
> 
> Networking Drivers
> http://community.qnx.com/sf/go/post92020
>

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