Date: Mon, 18 Feb 2002 15:59:57 -0500 (EST) From: Andrew Gallatin <gallatin@cs.duke.edu> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: Poul-Henning Kamp <phk@critter.freebsd.dk>, arch@FreeBSD.ORG, jhb@FreeBSD.ORG, peter@wemm.org, jake@locore.ca Subject: Re: timing results for gettimeofday() (without any credential fixes) Message-ID: <15473.27469.127329.884265@grasshopper.cs.duke.edu> In-Reply-To: <200202162115.g1GLFSe32349@apollo.backplane.com> References: <200202162115.g1GLFSe32349@apollo.backplane.com>
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Matthew Dillon writes: > CURRENT 2xCPU SMP BUILD Original gettimeofday() code > > one TG running: 350000/sec > two TGs running: 55000/sec per TG (no, that isn't a type-o) > <..> > STABLE 2xCPU SMP BUILD (note gettimeofday() on stable is marked MPSAFE): > one TG running: 192402/sec > two TGs running: 95900/sec > To add 2 datapoints to that: CURRENT 1CPU UP BUILD top-of-tree as of noon EST, no patches, no WITNESS, INVARIANTS: one TG running: 145000/sec -STABLE 1CPU UP BUILD, no patches one TG running: 625000/sec So that's a factor of 4 slowdown for syscalls between -current and -stable on UP alphas... Drew To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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