Are filters a heavy load for the server?

Are filters a heavy load for the server?

by Ger Tielemans -
Number of replies: 3
I love filters because they empower the editing teacher in many ways.
Another Moodler looked terrified when I told him about all my filters.

Is he right? Does filtering put a heavy load on the server?

(The point is that an advanced user can attach HTML-pages with embedded Applets or Flash, but if filters are not a problem, I would prefer them.)



I do NOT filter all strings (Moodle setting)
I allow more then one filter on a page (Moodle setting)
I allow filtering of uploaded HTML (Moodle setting)


These are my current filters:

Algebranotatie Schakel uit spacer.gif Omlaag
Flvplayer Schakel uit Omhoog Omlaag Instellingen
Freemind Schakel uit Omhoog Omlaag
Geogebra Schakel uit Omhoog Omlaag
Jmol Schakel uit Omhoog Omlaag
Multimediaplugins Schakel uit Omhoog Omlaag Instellingen
Hidden Text Schakel uit Omhoog Omlaag
Nanogong Schakel uit Omhoog Omlaag
Tex-notatie Schakel uit Omhoog Omlaag Instellingen
Scratch Schakel uit Omhoog Omlaag
Question Schakel uit Omhoog Omlaag Instellingen
Cabri Schakel uit Omhoog Omlaag
Multimovie Schakel uit Omhoog Omlaag
Netlogo Schakel uit Omhoog Omlaag
Automatisch links maken van de woordenlijst

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In reply to Ger Tielemans

Re: Are filters a heavy load for the server?

by Stuart Mealor -
Hi Gers

The only area I am aware of with filtering that can a bad effect is the
Filter all stringsfilterall setting on the Admin>Filters>Manage Filters page.

We have numerous filters active on our sites, and it seems to make little difference.

Of course, you could test this at a quiet time on your server.

Multi language filters are the heaviest in terms of server load I believe.

Have a test course prepared that can work with or without Filters.
Then, temporarily disable filters and compare the speed smile

Of course, the hardware you use makes a difference.
On a powerful server the effect will be far less dramatic than running on a server that is already struggling for processing power.

I must note that we had the Hidden Text Filter at one stage (very cool) but removed it because of some problems - that was a while ago - so it may have been updated now smile

Stuart
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In reply to Stuart Mealor

Re: Are filters a heavy load for the server?

by Frankie Kam -
Picture of Plugin developers

Hi Stuart

>...but removed it because of some problems.
>
What were those problems? I managed to solve the 'annoying scroll to the top of the browser screen' problem mentioned here.

Just thought you'd like to know.
Frankie Kam
boongsengkam@gmail.com 

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