Date: Thu, 12 Feb 2009 17:34:23 +0100 From: Jille Timmermans <jille@quis.cx> To: Julian Stacey <jhs@berklix.org> Cc: freebsd-hackers@freebsd.org, Andrew Brampton <brampton+freebsd-hackers@gmail.com> Subject: Re: pahole - Finding holes in kernel structs Message-ID: <49944F8F.5080104@quis.cx> In-Reply-To: <200902121549.n1CFnLdt002361@fire.js.berklix.net> References: <200902121549.n1CFnLdt002361@fire.js.berklix.net>
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Julian Stacey schreef: >> 1) Is it worth my time trying to rearrange structs? > > I wondered whether as a sensitivity test, some version of gcc (or > its competitor ?) might have capability to automatically re-order > variables ? but found nothing in man gcc "Optimization Options". There is a __packed attribute, I don't know what it exactly does and whether it is an improvement. -- Jille > > Cheers, > Julian
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