Re: 25 reasons why hardware is still hot at IBM

On Mon, 26 Apr 2010 16:06:34 +0000, Ted MacNEIL wrote:

When it comes to raw CPU power, PCs are very competitive.

Yes. I've never disputed that.
But, when it comes to I/O ...

Depends on the I/O. For TCP/IP, I find z painfully slow. Examples:

OS X (Intel) -------------------------------------------
500 $ time ftp localhost </dev/null
Trying ::1...
Connected to localhost.
220 ::1 FTP server (tnftpd 20080929) ready.
Name (localhost:paulgilm):
EOF received; login aborted.
221 Thank you for using the FTP service on ::1.

real 0m1.536s
user 0m0.002s
sys 0m0.005s
501 $
501 $
501 $ time ftp localhost </dev/null
Trying ::1...
Connected to localhost.
220 ::1 FTP server (tnftpd 20080929) ready.
Name (localhost:paulgilm):
EOF received; login aborted.
221 Thank you for using the FTP service on ::1.

real 0m0.064s
user 0m0.002s
sys 0m0.005s

Solaris (Intel) ----------------------------------------
Solaris: 168$ time ftp localhost </dev/null
Login incorrect.
Login failed.

real 0m0.04s
user 0m0.00s
sys 0m0.00s
Solaris: 169$ time ftp localhost </dev/null
Login incorrect.
Login failed.

real 0m0.03s
user 0m0.00s
sys 0m0.00s

z/OS ---------------------------------------------------
z/OS: time ftp localhost </dev/null
IBM FTP CS V1R10
Connecting to: localhost 127.0.0.1 port: 21.
220-FTPD1 IBM FTP CS V1R10 at .COM, 16:32:42 on 2010-04-26.
220 Connection will close if idle for more than 5 minutes.
NAME
QUIT generated by unexpected end of file
QUIT
221 Quit command received. Goodbye.

real 0m 9.21s
user 0m 0.14s
sys 0m 0.05s
z/OS: time ftp localhost </dev/null
IBM FTP CS V1R10
Connecting to: localhost 127.0.0.1 port: 21.
220-FTPD1 IBM FTP CS V1R10 at .COM, 16:32:55 on 2010-04-26.
220 Connection will close if idle for more than 5 minutes.
NAME
QUIT generated by unexpected end of file
QUIT
221 Quit command received. Goodbye.

real 0m 9.23s
user 0m 0.13s
sys 0m 0.05s

-- gil

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