Date: Tue, 13 Nov 2007 09:24:40 +0800 From: David Xu <davidxu@FreeBSD.org> To: Jeff Roberson <jroberson@chesapeake.net> Cc: Ivan Voras <ivoras@FreeBSD.org>, freebsd-threads@FreeBSD.org Subject: Re: PTHREAD_YIELDLOOPS boosts mysql super-smack performance Message-ID: <4738FCD8.4010907@freebsd.org> In-Reply-To: <20071112124354.H639@10.0.0.1> References: <4727E907.4090308@freebsd.org> <499c70c0710310217k3e55b66en23d32c2f6a613c99@mail.gmail.com> <fg9u5h$ume$1@ger.gmane.org> <472927B2.2090102@freebsd.org> <20071112124354.H639@10.0.0.1>
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Jeff Roberson wrote: > On Thu, 1 Nov 2007, David Xu wrote: > >> Ivan Voras wrote: >> >>> Abdullah Ibn Hamad Al-Marri wrote: >>> >>>> On Oct 31, 2007 5:31 AM, David Xu <davidxu@freebsd.org> wrote: >>> >>> >>> >>>>> it seems over 44% performance is improved. >>> >>> >>> >>>> When could you please commit these changes of libthr will hit RELENG_7 >>>> so we could benefit of these improvements? >>> >>> >>> >>> I agree this would be very nice to have in 7.0, especially since it's >>> off by default. We can add a tagline to the release to the tune of >>> "MySQL gets smacked!" >>> >> >> I will request a MFC. :-) > > > Did you try recompiling mysql to pickup chris's ADAPTIVE_MUTEX_NP > changes? How does this compare? > >> >> Regards, Yes, I had recompiled it, but I hadn't found any performance change with ADAPTIVE_MUTEX_NP :-) Regards, David Xu
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