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From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH] tc: Fix unitialized kernel memory leak
Date: Wed, 02 Sep 2009 23:45:09 -0700 (PDT)
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From: Stephen Hemminger <shemminger@vyatta.com>
Date: Wed, 2 Sep 2009 23:34:10 -0700

> I doubt it would make a noticeable performance difference because
> the first memset would incur the cache penalty of the write (if any)
> and later update of fields would be cached.

Indeed, but it also means your store buffer usage is half as effective.
And when writing a ton of messages that might be important.