Windows XP has a rate-limit on the number of TCP/IP connections that can be opened within a (sliding) time-period (I believe 10 per second). That limit does - AFAIK - not apply to Windows 2003 Server.

Because of the differences between 2003 Server and XP, this comparison, though interesting, does not tell anything about the performance on Windows Server editions.

Mark

> I ran an identical DB (about 1GB in size) on WinXP, WinXP Embedded and
> Ubuntu. The PC was a fanless 800MHz, 512M RAM, with a 60G 5400 RPM disk.
> Basically, it is an embedded PC for harsh environments. Generally, we have
> few connections that do dozens of inserts per second while running real-time
> calculations on energy consuption.
>
> I had timers on (almost) all transactions (there were a few exec SQL
> transactions that were not timed), and I got almost 30% better throughput on the
> Ubuntu system.
>
>
> I don't use Windows any more; we install fairly often on small platforms
> like the one mentioned and 30% bump on performance for $89 less money is a
> no-brainer.
>
> I have no comment on Win2003 Server (or anything since).

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