Date: Fri, 29 May 2009 02:19:15 +0200 From: Attilio Rao <attilio@freebsd.org> To: Stacey Son <sson@freebsd.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r192853 - in head/sys: cddl/contrib/opensolaris/uts/common/dtrace cddl/dev/lockstat conf kern modules/dtrace modules/dtrace/dtraceall sys Message-ID: <3bbf2fe10905281719jaf93290x2b429f16dc0f4ff6@mail.gmail.com> In-Reply-To: <200905262028.n4QKSNj3072741@svn.freebsd.org> References: <200905262028.n4QKSNj3072741@svn.freebsd.org>
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2009/5/26 Stacey Son <sson@freebsd.org>: > Author: sson > Date: Tue May 26 20:28:22 2009 > New Revision: 192853 > URL: http://svn.freebsd.org/changeset/base/192853 > > Log: > Add the OpenSolaris dtrace lockstat provider. The lockstat provider > adds probes for mutexes, reader/writer and shared/exclusive locks to > gather contention statistics and other locking information for > dtrace scripts, the lockstat(1M) command and other potential > consumers. I have a question now. In rwlocks, your algorithm doesn't bump spin_cnt for the adaptive spinning in read mode. Is that intendend? I don't think so, probabilly we should fix it by bumping spin_cnt also in the adaptive spinning in read mode. Thanks, Attilio -- Peace can only be achieved by understanding - A. Einstein
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