Date: Sun, 23 Feb 1997 09:29:36 -0700 (MST) From: Nate Williams <nate@mt.sri.com> To: Bruce Evans <bde@zeta.org.au> Cc: hardware@freebsd.org Subject: Memory speed (was Re: _big_ IDE disks?) Message-ID: <199702231629.JAA11518@rocky.mt.sri.com> In-Reply-To: <199702231441.BAA01194@godzilla.zeta.org.au> References: <199702231441.BAA01194@godzilla.zeta.org.au>
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> >> The fast-i586-copyout option is not enabled in 2.2-GAMMA. I forget what > >> it was in ALPHA. It was either not enabled or buggy (it caused panics). > > > >1048576000 bytes transferred in 16.608622 secs (63134437 bytes/sec) > > > >Do these numbers seem reasonable for a P6 200 w/64 megs EDO RAM? > > They seem a bit low. I would hope for 80-90MB/sec. The fast-i586-copyout > wouldn't affect this because it is an option for i586's. Assuming that I'm running the correct code: FreeBSD 2.2-GAMMA #10: Fri Feb 21 18:07:37 MST 1997 CPU: Pentium (99.47-MHz 586-class CPU) Origin = "GenuineIntel" Id = 0x525 Stepping=5 Features=0x1bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8> real memory = 67108864 (65536K bytes) avail memory = 63631360 (62140K bytes) * $Id: npx.c,v 1.31.2.6 1997/02/13 06:59:51 bde Exp $ moth:/sys/i386/isa # dd if=/dev/zero of=/dev/null bs=1m count=1000 1000+0 records in 1000+0 records out 1048576000 bytes transferred in 14.549281 secs (72070640 bytes/sec) Pretty low. This is an ASUS/Triton-I board if it makes any difference. Nate
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