This is a small ab test on VMware 3.0 on Windows on P3/850 and a P3/600:

Server Software:        AOLserver/3.4   <-- this is the P3/600
Server Hostname:        www.zoro.tcl.pl
Server Port:            80

Document Path:          /ab/ab.adp
Document Length:        12 bytes

Concurrency Level:      1
Time taken for tests:   15.304 seconds
Complete requests:      10000
Failed requests:        0
Total transferred:      1740000 bytes
HTML transferred:       120000 bytes
Requests per second:    653.42
Transfer rate:          113.70 kb/s received

Server Software:        AOLserver/3.4-z1   <-- this is the VM machine
Server Hostname:        www.ab.aol.hesus2.lan
Server Port:            80

Document Path:          /ab.adp
Document Length:        12 bytes

Concurrency Level:      1
Time taken for tests:   28.425 seconds
Complete requests:      10000
Failed requests:        0
Broken pipe errors:     0
Total transferred:      1770000 bytes
HTML transferred:       120000 bytes
Requests per second:    351.80 [#/sec] (mean)
Time per request:       2.84 [ms] (mean)
Time per request:       2.84 [ms] (mean, across all concurrent requests)
Transfer rate:          62.27 [Kbytes/sec] received

I guess it isn't that slow. I used to emulate Mac on my Amiga and I
learned that emulating can be useful. And I used a VMware Workstation
3.0 trial - and I suppose ESX/GSX servers are optimized for speed and
workstation is optimized for desktop performance (after installing
vmware_drv.o my XFree4 was almost as fast as on i810.o :).

I suppose context switching is the bottleneck with AOLserver, even with
threads...

When I tried using tcllib's MIME for 15MB mail parsing, the VM Linux was
actually faster (!) than real Win2000. About 5% faster. This was a nice
thing to see.

The PITA for emulating is the hardware required to emulate - like VGA
graphics, soundcards and so on.

Jerry Asher wrote:

> VMware is a wonderful product.  I am also amazed that these days a company
> with such a technically hard product, not hardware, to make or support
> could get funded.
>
> That said, I was surprised by their newsletter suggestion this morning:
>
>> TECH TIP OF THE MONTH:
>> HOSTING SERVICES ON VIRTUAL MACHINES BEHIND VMWARE NAT
>> Our users and staff often discover hints and shortcuts that can
>> help you get the most from VMware products. This month, our tech
>> tip explains how to configure VMware NAT so that your virtual
>> machines can provide network services (such as Web and FTP) on
>> your public network. NAT enables guest operating systems to share
>> the host operating system IP address(es). ...
>> Read more about hosting services on
>> virtual machines behind VMware NAT at:
>> http://vmware1.m0.net/m/s.asp?HB5170575598X1186076X89440X
>
>
> This is not the solution I would choose if I was concerned about
> performance.  I do wonder how well it might work as a chroot alternative.
>
> Jerry
> ========================================================
> Jerry Asher                      [EMAIL PROTECTED]
> 1678 Shattuck Avenue Suite 161   Tel: (510) 549-2980
> Berkeley, CA 94709               Fax: (877) 311-8688
>
>
>

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