[rescue] SS5 mobo

[Charles Shannon Hendrix]

Wed, 03 Mar 2004 @ 11:48 -0500, Kevin Loch said:

> (ss20 hs150, NetBSD 1.6.1):
> 
> % dd if=/dev/zero of=/dev/null bs=1024 count=10240
> 10240+0 records in
> 10240+0 records out
> 10485760 bytes transferred in 0.671 secs (15627064 bytes/sec)
> 
> % dd if=/dev/zero of=/dev/null bs=10240 count=10240
> 10240+0 records in
> 10240+0 records out
> 104857600 bytes transferred in 1.203 secs (87163424 bytes/sec)

(ss5 170MHz, NetBSD 1.6.0 kernel, 1.6.1 system)

% dd if=/dev/zero of=/dev/null bs=1024 count=10240
10240+0 records in
10240+0 records out
10485760 bytes transferred in 0.852 secs (12307230 bytes/sec)

% dd if=/dev/zero of=/dev/null bs=10240 count=10240
10240+0 records in
10240+0 records out
104857600 bytes transferred in 1.602 secs (65454182 bytes/sec)

Definitely slower, but not by all that much.

> (AthalonXP 2800+ FreeBSD 5.2.1):
> % dd if=/dev/zero of=/dev/null bs=1024 count=102400
> 102400+0 records in
> 102400+0 records out
> 104857600 bytes transferred in 0.300071 secs (349442631 bytes/sec)
> 
> % dd if=/dev/zero of=/dev/null bs=10240 count=102400
> 102400+0 records in
> 102400+0 records out
> 1048576000 bytes transferred in 0.485469 secs (2159924306 bytes/sec)

Hmmm... check the numbers out on my "old" Linux system.  

(Athlon 700MHz/512k 'classic', Linux 2.6.3 Slackware 9.1 system)

% time dd if=/dev/zero of=/dev/null bs=1024 count=102400
102400+0 records in
102400+0 records out

real	0m0.246s
user	0m0.066s
sys	0m0.120s

% echo "scale=2;(1024*102400)/0.246" | bc -l
426250406.50

426,250,406.50

% time dd if=/dev/zero of=/dev/null bs=10240 count=102400
102400+0 records in
102400+0 records out

real	0m0.685s
user	0m0.057s
sys	0m0.477s

% echo "scale=2;(10240*102400)/0.685" | bc -l
1530767883.21

1,530,767,883.21


-- 
shannon "AT" widomaker.com -- ["Tara is grass, and behold how Troy lieth
low--And even the English, perchance their hour will come!"]