Date: Tue, 30 Apr 2002 04:03:14 -0700 From: David Schultz <dschultz@uclink.Berkeley.EDU> To: Rohit Grover <rohit@gojuryu.com> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: larger kernel virtual address space Message-ID: <20020430040314.A11282@HAL9000.wox.org> In-Reply-To: <20020429231718.00B602756@sitemail.everyone.net>; from rohit@gojuryu.com on Mon, Apr 29, 2002 at 04:17:18PM -0700 References: <20020429231718.00B602756@sitemail.everyone.net>
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Thus spake Rohit Grover <rohit@gojuryu.com>: > I apologize for not checking the FAQs before asking the question. > http://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/advanced.html#CHANGE-KERNEL-ADDRESS-SPACE > > How large can we make the KVA? This was recently discussed in the thread ``FreeBSD 4.5-STABLE not easily scalable to large servers ... ?'' on the stable and current lists; you'll probably find the information you want in the archives. The short answer is that KVA + UVA <= 4 GB on x86. So you could raise KVA to 3 GB, for instance, but then any given user process would only be able to address 1 GB of virtual memory. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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