Date: Tue, 15 Feb 2005 14:59:03 -0600 From: Alan Cox <alc@cs.rice.edu> To: John Baldwin <jhb@FreeBSD.org> Cc: cokane@cokane.org Subject: Re: cvs commit: src/sys/i386/i386 apic_vector.s local_apic.c mp_machdep.c src/sys/i386/include apicvar.h smp.h src/sys/i386/isa clock.c Message-ID: <20050215205903.GF27360@cs.rice.edu> In-Reply-To: <200502141630.56868.jhb@FreeBSD.org> References: <200502082025.j18KP72E069507@repoman.freebsd.org> <20050214001550.GA59689@dragon.nuxi.com> <346a802205021410425515fec@mail.gmail.com> <200502141630.56868.jhb@FreeBSD.org>
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On Mon, Feb 14, 2005 at 04:30:56PM -0500, John Baldwin wrote: > On Monday 14 February 2005 01:42 pm, Coleman Kane wrote: > > I've been testing these since they were posted. All is well thus far! > > I need perf numbers though. They should work fine, but I really don't know if > they will help or hurt performance. Also, the perf characteristics are > likely different on UP vs SMP. > For a 2-processor SMP there is a small but consistent improvement: Before while? time make -j4 buildworld > & /dev/null while? end 1624.417u 568.837s 20:21.84 179.5% 4198+3213k 21574+3973io 1579pf+0w 1623.516u 593.309s 19:30.11 189.4% 4185+3186k 1702+4248io 364pf+0w 1618.944u 594.313s 19:31.65 188.9% 4173+3190k 1687+5088io 364pf+0w 1622.615u 585.424s 19:32.84 188.2% 4187+3197k 1652+7268io 364pf+0w 1618.329u 597.495s 19:30.06 189.3% 4183+3197k 1595+3850io 364pf+0w 1623.015u 595.645s 19:30.30 189.5% 4177+3187k 1584+3844io 364pf+0w 1621.247u 599.443s 19:31.61 189.5% 4173+3191k 1582+3861io 364pf+0w 1624.092u 593.148s 19:31.17 189.3% 4176+3186k 1603+3860io 364pf+0w 1619.299u 594.466s 19:28.27 189.4% 4185+3190k 1593+3852io 364pf+0w 1622.323u 595.654s 19:33.75 188.9% 4175+3185k 1587+3858io 364pf+0w After while? time make -j4 buildworld > & /dev/null while? end 1626.759u 560.376s 20:31.59 177.5% 4193+3207k 22718+5042io 1576pf+0w 1618.035u 583.427s 19:25.52 188.8% 4186+3200k 1656+7129io 364pf+0w 1617.674u 589.693s 19:29.04 188.8% 4173+3190k 1694+3868io 364pf+0w 1620.134u 586.273s 19:26.56 189.1% 4182+3195k 1590+3853io 364pf+0w 1618.173u 586.320s 19:28.64 188.6% 4178+3195k 1584+3857io 364pf+0w 1620.728u 584.587s 19:26.34 189.0% 4182+3197k 1582+3857io 364pf+0w 1617.428u 585.268s 19:22.33 189.5% 4186+3195k 1638+3866io 364pf+0w 1618.586u 591.811s 19:27.68 189.2% 4175+3189k 1611+3842io 364pf+0w
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