Re: science fair project

[Ashwin Mansinghka <ashwin midascomm com>]

On 1 Jan 2002, Brandon Hale wrote:

> 
>  
> > Are you planning on running the query more than once and averaging? As I
> > seem to remember that JSP will spend a little longer serving the first
> > request while it compiles the byte-code for the page, and will be faster
> > at each time..
> Results will definately be averaged over several trials, I am thinking
> 10 will suffice.

Make multiple tries - rather use a script which continuously quries on
HTTP port and waits for the reply, run it over night, then use
average. Remember when you average always have large samples.

>  
> > .. In a big mysql database I've got, I ran the query
> > SELECT * FROM Img LIMIT 0,1 : first query ran at 0.80sec,
> > second time round was 0.01sec- so take a look at the mySQL documentation
> > to see if it offers help.... I think a similair discussion was had a
> > while back on a PHP list.
> Does anyone know if restarting mysqld will reset the cache or whatever
> causes this speedup?
> 
> > Theres A few things to think about.
> 
> Thanks alot for the advice, Adam and Mark
> ;-)
> 
> I could still use help with some sort of timing script if anyone has
> experience with this sort of thing. Any help on this issue would be
> greatly appreciated.
> 

For each given crucial step being completed (from php / ColdF.. JSP
scripts) generate a log message in a specific test file with a time stamp.
Later you can use this log file and parse it using a simple shell or perl
script to find out the averages. Make a simple clean design for each step
and just go on. 

Best of Lucks.

> 
> 
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