Re: [Qexo-general] Speed of execution

[Per Bothner]

Eric Safern wrote:
> With the full linux fortune data as its input (> 100,000 lines), the 
> servlet takes 4 - 7 seconds on my test box, which strikes me as too long
> for an impatient web surfer.  On a far smaller subset of data (4,000
> lines), response time comes in at 1 - 2 seconds, which is still longer
> than I'd like.

Are you using a servlet?  My guess is that the 1-2 seconds is
start-up time, and using a servlet can help with that, if you're
not already using it.

If you *are using a servlet, then the next step may be to pre-calculate
document("/var/www/html/fortunes.xml")/fortunes/address@hidden/cookie
for each $type, assuming there is only a small number of types.  You
could either save this in separate files, or do this pre-calculation
at server init type.  (The latter requires some Java programming,
or at least some Scheme programming, since I don't think you can
(currentlty do it in XQuery).  Or just pre-read the
document("/var/www/html/fortunes.xml") in the server init
code.

Of course it would also be useful to figure out where the time
is going on the big input file.  That may require some Java
profiling, which I don't any experience with.  What I could do
is just eye-ball the generated bytecode, though I don't know
when I'll have time.  (Well, eye-balling it shouldn't take long.
That may at least give us some ideas for potential improvements.
Improving the compiler may be harder to find the time for!)
--
        --Per Bothner
address@hidden   http://www.bothner.com/per/