[Zope] zope performance issues

[Dieter Maurer]

Trevor Warren wrote at 2004-5-21 03:39 -0700:
>--- Dieter Maurer <dieter at handshake.de> wrote:
>> You may increase the number of instructions before
>> Python
>> is ready to switch threads (again to reduce the
>> number of thread
>> switches). This, too, will not drastically improve
>> throughput,
>> though.
>[snip]
>
> Where is this setting???. Is this the one in
>zope.conf  mentioned as python_check_interval as
>"1000".

Yes.

> ...
> BTW Dieter, the number of hits/s are on the lines of
>yours. Out here we are taught to not look at them but
>total transactional throughput as defined by some very
>simple e-business tests.

Sure, as service times vary highly...

My numbers should just give you a feeling, how fast you
can get. It is highly unlikely that
you can achieve more than 80 to 160 requests per second
given your machine. Adding the service times for
the individual requests together will give
you an upper bound on the number of transactions.

You will only get more, when you do either:

  *  serve static content either from (external) caches or
     directly from Apache

  *  increase CPU speed

  *  increase number of CPU's and (accordingly) Zope processes

Of course, you can combine these various approaches.

-- 
Dieter