Date: Sun, 07 Aug 2005 07:53:04 +0800 From: David Xu <davidxu@freebsd.org> To: David Xu <davidxu@freebsd.org> Cc: freebsd-amd64@freebsd.org Subject: Re: Benchmarks: AMD64 vs i386 on Dual 246 Opteron Message-ID: <42F54D60.1090102@freebsd.org> In-Reply-To: <42F54A8E.8080704@freebsd.org> References: <3.0.1.32.20050728080526.00aa4098@pop.redshift.com> <3.0.1.32.20050728092338.01207628@pop.redshift.com> <20050728163602.GC64153@troutmask.apl.washington.edu> <200507281057.43655.peter@wemm.org> <42F54A8E.8080704@freebsd.org>
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David Xu wrote: > Peter Wemm wrote: > >> Mysql could also easily be affected by inefficiencies in the amd64 >> pthread libraries too. >> >> >> > libthr on -CURRENT is very similar with Linux NPTL, think of NPTL's > throughput, the inefficiencies might be in our kernel. Also the > bottleneck in > userland might be malloc which does belongs to thread library, sorry for typo, malloc is in libc. > Linux has > ptmalloc which is thread friendly.
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