Date: Sat, 16 Nov 1996 03:55:55 +1100 From: Bruce Evans <bde@zeta.org.au> To: cracauer@wavehh.hanse.de, freebsd-current@FreeBSD.org Subject: Re: EDO vs. other (Re: GigaByte GA-586DX-512 Motherboard) Message-ID: <199611151655.DAA19190@godzilla.zeta.org.au>
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>I just ran that famous RAM benchmark that came down -hackers some time >ago: Infamous? :-) >normal parity RAM (8x 32 MB installed) >49005fb0 0.160 uS/op 6.24e+06 op/S 23.805 Mb/S >8938c0df 0.369 uS/op 2.71e+06 op/S 10.338 Mb/S >49005fb0 0.160 uS/op 6.24e+06 op/S 23.806 Mb/S >8938c0df 0.369 uS/op 2.71e+06 op/S 10.337 Mb/S > >EDO w/o Parity (2x 16 MB installed) >49005fb0 0.159 uS/op 6.29e+06 op/S 23.999 Mb/S >8938c0df 0.366 uS/op 2.73e+06 op/S 10.421 Mb/S >49005fb0 0.159 uS/op 6.29e+06 op/S 23.999 Mb/S >8938c0df 0.366 uS/op 2.73e+06 op/S 10.422 Mb/S I forget exactly what this does. I guess it does a lot of random accesses. Random access is not the strongest point of RAM :-). >I don't beleive one can speed up any real application using EDO. It speeds up copying of large amounts of data in the kernel by 5-10% (from 75MB/sec to > 80MB/sec for uncached memory on ASUS Triton 1 P133 systems). This might show up in real applications that read a lot of data from fast disks. Bruce
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