Date: Sun, 24 Dec 1995 00:21:25 -0600 (CST) From: Gary Clark II <gclarkii@main.gbdata.com> To: davidg@Root.COM Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: Pentium bcopy 486DX-66 results Message-ID: <199512240621.AAA01040@main.gbdata.com> In-Reply-To: <199512240541.VAA00518@corbin.Root.COM> from "David Greenman" at Dec 23, 95 09:40:58 pm
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David Greenman wrote: > > >On Sun, 24 Dec 1995, Torbjorn Granlund wrote: > >> > >> I don't have any 486 systems, so I cannot tell for sure. Here is a simple > >> test program that you can use for timing tests: > > > > here are results using 2.1.0-RELEASE, a 486dx-66 with an asus sp3g > >motherboard and write-back cache discipline. > > > >Aspen:[45] ./a.out > >copy 8259 > >memcpy 8582 > > > > You should have just used cc to assemble it - name the file copy.S and then > use: > > cc -c copy.S > cc -o copytest copytest.c copy.o > > This will run it through cpp. ...thanks for the results. > > -DG Hi, Here are my results on a 486DX4-100 8 meg in X not sure about cache. gcc -m486 -O2 -o testcopy testing.c copy.o main:gclarkii# time testcopy copy 10232 bcopy 2403 memcpy 9315 21.9u 0.0s 0:22.08 99.5% 5+183k 1+0io 0pf+0w My sources are using 1024 for SIZE and I just change copy for bcopy for the bcopy stats. It looks like copy is a big loss for me...:( Gary Gary Clark II (N5VMF) gclarkii@FreeBSD.ORG
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