Date: Fri, 27 Mar 2009 13:08:34 -0700 From: Julian Elischer <julian@elischer.org> To: Scott Long <scottl@samsco.org> Cc: Sergey Babkin <babkin@verizon.net>, freebsd-hackers@FreeBSD.org, attilio@FreeBSD.org, phk@phk.freebsd.dk, freebsd-current@FreeBSD.org, Robert Watson <rwatson@FreeBSD.org>, prashant.vaibhav@gmail.com Subject: Re: Improving the kernel/i386 timecounter performance (GSoC proposal) Message-ID: <49CD3242.8050802@elischer.org> In-Reply-To: <49CD1B3D.3030103@samsco.org> References: <11609492.9579.1238167614335.JavaMail.root@vms070.mailsrvcs.net> <49CD0405.1060704@samsco.org> <alpine.BSF.2.00.0903271821060.60642@fledge.watson.org> <49CD1B3D.3030103@samsco.org>
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Scott Long wrote: > Robert Watson wrote: >> >> On Fri, 27 Mar 2009, Scott Long wrote: >> >>> I've been talking about this for years. All I need is help with the >>> VM magic to create the page on fork. I also want two pages, one >>> global for gettimeofday (and any other global data we can think of) >>> and one per-process for static data like getpid/getgid. >> >> FWIW, there are some variations in schemes across OS's -- one extreme >> is the Linux approach, which actually exports a mini shared library in >> ELF format on the shared page, providing implementations of various >> services (such as entering system calls), time stuff, etc. Less >> extreme are the shared pages offered on Mac OS X, etc. >> > > Yes, but I'd like to start somewhere, and considering that it's been > impossible in _5_ years to get the 30 minutes of Peter or JeffR or JHB > time to get the basic VM magic done, I'm keeping my expectations as > modest as possible. try alc.. :-) > > Scott > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"
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