Date: Sun, 12 Apr 2009 16:41:37 +0200 From: Luigi Rizzo <rizzo@iet.unipi.it> To: Robert Watson <rwatson@freebsd.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: per-cpu counters (Re: svn commit: r190967 - head/sys/netinet) Message-ID: <20090412144137.GD96365@onelab2.iet.unipi.it> In-Reply-To: <alpine.BSF.2.00.0904121528590.19879@fledge.watson.org> References: <200904121406.n3CE6QSH027497@svn.freebsd.org> <20090412143000.GB96365@onelab2.iet.unipi.it> <alpine.BSF.2.00.0904121525540.19879@fledge.watson.org> <alpine.BSF.2.00.0904121528590.19879@fledge.watson.org>
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On Sun, Apr 12, 2009 at 03:29:38PM +0100, Robert Watson wrote: > > On Sun, 12 Apr 2009, Robert Watson wrote: > > >>As an example, an approach i was considering is replace the existing > >>counters with an index in a global_counters[MAXCPU][] array so the > >>counter update will become something like this: > > FYI, one other reason to put it all behind per-subsystem macros is that it > allows us to easily prototype another statistics implementation, the no-op, > on a per-subsystem basis. good point, i didn't consider this.
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