On Oct 30, 2004, at 15:45, John Peacock wrote:
> Barry Scott wrote:
>> Running on a 1GHz Windows XP SP1 systems with Norton
>> anti-virus enabled:
>> Time for 100 calls 2423ms
>> Time for 1 call 24ms
>> Running on a 1GHz Windows XP SP1 systems with Norton
>> anti-virus disabled:
>> Time for 100 calls 1392ms
>> Time for 1 call 13ms
>> The performance on Linux is fine, but the Windows performance is
>> terrible.
>
> Uninstall Norton and rerun your test. Windows AV programs hook into
> the filesystem at a very low level and interrupt every call to access
> files. If you disable the AV software, the system level hook still
> fires, but the AV software returns immediately. Only by uninstalling
> the AV software will you get any feel for actual system performance.
> This is something that CVSNT has had to deal with as well; it is
> particularly bad when you are creating and deleting lots of temporary
> files, since each and every call gets the performance hit.
>
> The best solution is to uninstall the AV software completely, the
> second best is to set the software to ignore the portion of the
> directory tree which contains the WC (or server, since I cannot be
> sure if you are testing client time or server time).
You are of course joking. Run a Windows systems without AV is a
accident waiting to happen.
Barry
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Received on Sun Oct 31 11:59:45 2004