In article <Pine.SOL.4.21.0003071518440.17858-100000@shoggoth.cs.umn.edu> you wrote:
> On Tue, 7 Mar 2000, Frank van der Linden wrote:
>>
>> 	ftp://ftp.nl.netbsd.org:/pub/NetBSD/fvdl/ahc-03082000.tgz
> 
> 
> It works on my Dell 2400 with 2 36 GB disks. I'll include the dmesg output
> and the output from bonnie.  I wonder want happened between 16 and 32 MB file
> size...
> 
> 
>               ---------Sequential Output-------- ---Sequential Input---- ---Random---
>               -Per Char-  ---Block--- -Rewrite-- -Per Char- ---Block---- ---Seeks----
> Machine    MB K/sec %CPU  K/sec  %CPU K/sec %CPU K/sec %CPU K/sec %CPU   /sec    %CPU
>            16 41230 98.6 185404  89.3 11816  8.8 10327 31.3 430127  99.6 2237.3   6.6
>            32 15834 37.8  18679   9.1  4734  2.7 10981 34.0  24217   7.9  684.3   2.5

...

> NetBSD 1.4U (NEXUS) #0: Tue Mar  7 09:00:17 CST 2000
>     root@setup:/usr/src/sys/arch/i386/compile/NEXUS
> cpu0: family 6 model 8 step 1
> cpu0: Intel Pentium III (E) (686-class)
> total memory = 511 MB
> avail memory = 471 MB
> using 4870 buffers containing 26296 KB of memory

Up to (and including) 16MB (26MB, indeed), you only work on the buffer cache,
not on the disk. 24MB/s is a bit more relatistic than 400MB/s for current
disk technology. 8-)


 - Hubert

-- 
Microsoft: "Where do you want to go today?"
Linux:     "Where do you want to be tomorrow?"
BSD:       "Are you guys coming, or what?"