netdev - Re: [PATCH 02/10] Networking include file changes.

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Date:	Fri, 20 Jul 2007 11:59:35 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Krishna Kumar <krkumar2@...ibm.com>
CC:	davem@...emloft.net, rdreier@...co.com, johnpol@....mipt.ru,
	Robert.Olsson@...a.slu.se, peter.p.waskiewicz.jr@...el.com,
	herbert@...dor.apana.org.au, gaagaan@...il.com,
	kumarkr@...ux.ibm.com, xma@...ibm.com, rick.jones2@...com,
	mcarlson@...adcom.com, netdev@...r.kernel.org, jagana@...ibm.com,
	general@...ts.openfabrics.org, mchan@...adcom.com, tgraf@...g.ch,
	jeff@...zik.org, hadi@...erus.ca, sri@...ibm.com
Subject: Re: [PATCH 02/10] Networking include file changes.

Krishna Kumar wrote:
> diff -ruNp org/include/linux/netdevice.h new/include/linux/netdevice.h
> --- org/include/linux/netdevice.h	2007-07-20 07:49:28.000000000 +0530
> +++ new/include/linux/netdevice.h	2007-07-20 08:30:55.000000000 +0530
> @@ -264,6 +264,8 @@ enum netdev_state_t
>  	__LINK_STATE_QDISC_RUNNING,
>  };
>  
> +/* Minimum length of device hardware queue for batching to work */
> +#define MIN_QUEUE_LEN_BATCH	16


Is there any downside in using batching with smaller queue sizes?
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