[PHP-DEV] ibase_connect and ibase_pconnect

[Ira Tonert]

Hi,

we have an application, which connects to a database of
type interbase. We can see, that the times of the 
connects go very high, if more people call our site
at the same time.
Per default we use the function ibase_connect and at
the end of the script we make an ibase_close.
If three users go to our site at the same page, the
connect times are so:

User 1: 0.180948s
User 2: 1.104926s
User 3: 2.055006s

The times go very very high, if more users go to the site.
The times go up to more than one or two minutes, only for
a connect(!).

We tried it with a ibase_pconnect, a persistent
connection, too. But the times are the same like with
ibase_connect.

At the php.ini we have maked the following settings:
a) no entry for ibase.allow_persistent
b) ibase.allow_persistent = On
c) ibase.allow_persistent = 1

For the number of connects we tried it with
  ibase.max_persistent = -1
  ibase.max_links = -1
and with
  ibase.max_persistent = 100
  ibase.max_links = 100
too.
It makes no diffence.

The parameter of the connects are always the same, the 
same database, the same user and so on.

Know anybody, why the connect times go so high? Know
anybody, does the persistent connect work like described?

I hope, that anybody can help me and: thanks.

Best regards,
Ira 

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Re: [PHP-DEV] References - good or bad

[ira]

Hi,

I've read "PHP 4: Reference Counting and Aliasing" By Andi Gutmans on Zend.com site 
(http://www.zend.com/zend/art/ref-count.php). Also I read this mail 
http://marc.theaimsgroup.com/?l=php-dev&m=100955714924477 from him.

I would like to know more about how reference is managed by PHP4. I'm missing 
something like that article (see the first URL) for reference.

What happens inside PHP4 with this code ?



How PHP4 know that $c and d are reference to $a and not "counted" like $b ? And so 
what makes references so bad ? ;-)

Another (more important) example:



What happens to $tmp ? If it will not refer to a new memory block why the memory used 
by the script is more than without '&' ? (See the second URL).

Thanks.


Ed



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