Date: Tue, 15 Apr 2008 08:06:34 +0000 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Jeff Roberson <jroberson@jroberson.net> Cc: Andrew Reilly <andrew-freebsd@areilly.bpc-users.org>, Roman Divacky <rdivacky@FreeBSD.org>, Robert Watson <rwatson@FreeBSD.org>, Julian Elischer <julian@elischer.org>, FreeBSD Current <current@FreeBSD.org> Subject: Re: stack hogs in kernel Message-ID: <3226.1208246794@critter.freebsd.dk> In-Reply-To: Your message of "Mon, 14 Apr 2008 21:38:34 -1000." <20080414213656.Q959@desktop>
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In message <20080414213656.Q959@desktop>, Jeff Roberson writes: >> I've long wondered about the seemingly fanatical stack size concern in >> kernel space. In other domains (where I have more experience) you can >> get good performance benefits from the essentially free memory management >> and good cache re-use that comes from putting as much into the >> stack/call-frame as possible. > >There is a small fixed kernel stack per-thread. And in case anybody is about to forget: FreeBSD is still used on systems with a lot less than 1GB ram :-) -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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