PHP Memory Limit / RAM questions

Question

I have a question regarding PHP and it's memory limit. I have an index.php page, that requires memory_limit to be set to about 50MB or more to run.

So does this mean anytime somebody visits that page it will take 50MB of RAM memory to load the page?

In other words if 2 clients are asking for the same page at the same time, the server needs 100MB of free RAM memory to serve them?

I must ask why your index.php requires 50 MB at all. Perhaps you should be doing something else? — John Chadwick
– John Chadwick, Commented Nov 20, 2011 at 13:11
Short answer yes... why are you not caching the generated page? — Lawrence Cherone
– Lawrence Cherone, Commented Nov 20, 2011 at 13:11
@JohnChadwick because it's a BuddyPress and is using an old theme, never updated... — adrian7
– adrian7, Commented Nov 20, 2011 at 13:22
@LawrenceCherone sure, I am planning to install w3 total cache and further xcache. — adrian7
– adrian7, Commented Nov 20, 2011 at 13:25

Pekka · Accepted Answer · 2011-11-20 16:46:48Z

3

The answer is yes, every PHP process that runs that page will potentially require up to 50 MB of RAM.

Having such a greedy index page is not a good thing. You're not saying what it's doing so it's impossible to give optimization tips, but consider either putting the memory-intensive tasks elsewhere, or caching the page.

edited Nov 20, 2011 at 16:46

user212218

answered Nov 20, 2011 at 13:14

Pekka

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Uladzimir Pasvistselik · Accepted Answer · 2011-11-20 13:19:00Z

0

memory_limit limits memory usage for script per one request

answered Nov 20, 2011 at 13:19

Uladzimir Pasvistselik

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