Markup Trimming

MPB3.Radio · Trick Member Joined: 05 Dec 2002 Location: P-Town

I noticed that all the comments are still in the template's stylesheet. A lot of them are pretty long. I can imagine that removing all the CSS comments might reduce bandwidth consumption significantly given the amount of traffic the forum gets. There's also comment tags in the footer just before the copyright (the one telling people not to remove it).

VxJasonxV · Posted: Fri Mar 26, 2004 10:09 am Post subject:

Comments take up negligible bandwidth.

There's three issues that affect site performance:
1) CPU Load - Depending on the amount of rendering/processing that the server is doing, PHP Parsing, MySQL/PostGreSQL Querys, Apache handling, etc. may be a deal slower.

2) Network Bottlenecks - For the most part, this is usually out of our control, and this is controlled by the datacenter's upstream providers, etc. If any shell users are connected and transfering a lot of data, this may assist in clogging server's throughput. However, that doesn't happen very often. It will happen, but not very much.

3) This is really a part of CPU Load, but I wanted to spell this out seperately.
Comments matter little. I would estimate there is no more than 5K of comments on any given page.
HTML is rendered by your browser, all we have to do is send you the contents.
JavaScript is rendered by your computer/browser, all we have to do is send you the script.
CSS is rendered on HTML elements by your browser, all we have to do is send you the specification.
PHP you cannot see in our source, the server renders it into HTML, see HTML

.
MySQL/PostGreSQL Querys are run as a part of PHP Processing, after completing the query, becomes result data in PHP, which the server renders into HTML, see HTML

.
I think that's about what you'll find on any given page. Add in the transferring of pictures and such, and you have everything necessary.
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MPB3.Radio · Trick Member Joined: 05 Dec 2002 Location: P-Town

I was talking specifically about the comments in the page outputs, not the scripts so there's no need to address that. 5 extra kilobytes per complete transfer that is uncompressed (to my understanding) multiplied by the number of users accessing this board adds up and at a certain point it may no longer be negligible. If it's not an issue now, then I understand in which case I'm just being informative.

Also, I should add that I'm quite aware of process involved in phpBB, and HTTP in general. I run my own servers and sites so it's pretty safe to assume that I know what I'm talking about. Maybe I wasn't clear enough, in which case it's my fault, but for reference the last suggestion I made was taken and implemented by J Dogg making the forums significantly faster in observation.

sherl0k · Maniac Member Joined: 27 Jan 2002 Location: the internet

the .5 KB, even multiplied by the number of users accessing the site, is still pretty negligble compare to the speed the data is being sent out. my guess is that this server sends data at a full 10mbit. i wouldn't think the bottleneck for speed is in transferring the data; rather the speed of accessing the data in the SQL database and sending it out.

the database is HUGE. already Zend is in place to optomize, but even so there's a bottleneck.

i think someone mentioned clustering before (Agilab I believe). that would be a more viable solution than shaving off a measly .5k out of the data being sent out.
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evn · Staff Member Joined: 23 Jan 2002 Location: Calgary AB

Normally I wouldn't post in a locked thread, but just to add something:

CSS Files, and everything they point to are cached by the browser and in my experience they are rarely re-requested by a browser without a good reason. Example, here is a clip from the CSS sheet for my personal page: