Ubuntu
php5 package

Increase default memory_limit for php

Bug #196806 reported by Daniel Hahler
8
Affects Status Importance Assigned to Milestone
php5 (Ubuntu)
Triaged
Wishlist
Unassigned

Bug Description

Binary package hint: php5

The current default memory_limit for mod_php5 in Apache is 16M (and 32M for cli).

I think this should get increased, because of the following reasons:
 - PHP recommends 128M (it's in ini-dist and ini-recommended)
 - Debian uses 128M (32M for cli)

While it's not really that difficult to change this setting in case it's required, it's an unnecessary obstacle.

I suggest using at least also 32M as the default for mod_php5. Using the Debian setting (128M) would allow us to drop this (small) delta.

Daniel Hahler (blueyed)
Changed in php5:
importance: Undecided → Wishlist
Revision history for this message
Daniel Hahler (blueyed) wrote :

Soren, what do you think?
<\sh> blueyed: imho 128MB on nowdays server is not much

In the sense of LTS, we really should not make all admin bump this setting manually.
Like Stephan, I think we should go with 128M, just like Debian does.

Changed in php5:
milestone: none → ubuntu-8.04
status: New → Triaged
Revision history for this message
Daniel Hahler (blueyed) wrote :

After more discussion in IRC yesterday, we (\sh, soren, me) agreed that 128M is too much.

While I agree that 16M is a sensible default for now, a limit of 32M seems more future proof.

Revision history for this message
Krešo Kunjas (deresh) wrote :

and to emphasise, 128M is the MAX memory that php may use. I'm using several php5 tools that require min 32Mb to work ( symfony, Propel, Doctrine ), and more and more php webapps are using this tools also.
So will this be in hardy ?

Maybe 128 is to much bit and 32 or 64 is a more sensible default, and especialy for this LTS it's expected for php apps to require more memory in the future.

Steve Langasek (vorlon)
Changed in php5:
milestone: ubuntu-8.04 → none
Revision history for this message
ewanm89 (ewanm89-googlemail) wrote :

and any admin that has had his server have digg/slashdot effect also knows that this can manage to fill up 4GB of memory in a few seconds.

Revision history for this message
Soren Hansen (soren) wrote : Re: [Bug 196806] Re: Increase default memory_limit for php

On Mon, Aug 25, 2008 at 06:13:05AM -0000, ewanm89 wrote:
> and any admin that has had his server have digg/slashdot effect also
> knows that this can manage to fill up 4GB of memory in a few seconds.

Err.. No. This is a per-interpreter limit. Not a global limit for all
apache processes put together.

--
Soren Hansen |
Virtualisation specialist | Ubuntu Server Team
Canonical Ltd. | http://www.ubuntu.com/

Revision history for this message
ewanm89 (ewanm89-googlemail) wrote :

Yes, s each apache process can use more. 16*5 < 32*5.

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