Date: Sun, 23 Jul 2006 19:48:36 +0200 From: =?ISO-8859-1?Q?Sten_Daniel_S=F8rsdal?= <lists@wm-access.no> To: "M. Warner Losh" <imp@bsdimp.com> Cc: freebsd-current@freebsd.org Subject: Re: vmstat's entries type Message-ID: <44C3B674.3040804@wm-access.no> In-Reply-To: <20060720.093457.1661914908.imp@bsdimp.com> References: <1153312635.1261.22.camel@genius.i.cz> <200607191315.k6JDFpvM048354@lurza.secnetix.de> <20060720.093457.1661914908.imp@bsdimp.com>
next in thread | previous in thread | raw e-mail | index | archive | help
M. Warner Losh wrote: > > One approach that we could use for 64-bit counters would be to just > use 32-bits one, and poll them for overflow and bump an overflow > count. This assumes that the 32-bit counters overflow much less often > than the polling interval, and easily triples the amount of storage > for each of them... It is ugly :-( >=20 What's wrong with the add+adc (asm) approach found on any i386? It would cost you just a few cpu cycles unless i'm mistaken. --=20 Sten Daniel S=F8rsdal
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?44C3B674.3040804>