mongrel configuration

rubyonrails-talk
1

How do you know the right number of mongrel servers to run? I believe it defaults to 3...is there a better number than 3? If so, how do you know?

We tried 3, 10, 100.... However, not sure the right setting for this one.

anyone have any good doc that discusses this?

2

depends entirely on traffic. If it's running slow and you have ram available, increase it.

If you only get 20 hits a day you don't need more than 1

I usually do 2 and increase it if I notice stuff going slowly (which means most of my sites run on 2.)

3

thanks

4

Is the version of ruby important or is it fine with 1.8.5? I use to run 1.8.6 but the new server running on CentOS came with 1.8.5 native to the O/S. Therefore, the engineer preferred to not upgrade and let the O/S patch. I am curious if you have any ideas about this too.

5

Is the version of ruby important or is it fine with 1.8.5? I use to run 1.8.6 but the new server running on CentOS came with 1.8.5 native to the O/S. Therefore, the engineer preferred to not upgrade and let the O/S patch. I am curious if you have any ideas about this too.

6

It is broke so that is why I am asking.

How many mongrel sessions should we run?

What version of ruby do you recommend?

What version of RoR seems the most stable for speed and functionality?

Is FastCGI still needed or is mongrel fine on its own?

7

It is broke so that is why I am asking.

How many mongrel sessions should we run?

What version of ruby do you recommend?

What version of RoR seems the most stable for speed and functionality?

Is FastCGI still needed or is mongrel fine on its own?

8

Sorry. The problem is with performance when it hits images. It seems the html design contains some small graphics and the redraw of the graphics on the initial load is a bit sluggish. Therefore, I am trying to figure out where the problem is...

The db hits are super fast and even pages without db hits run kind of sluggish....not slow just not as fast as it should be running.

we tried 5, 10, 50 and 100 mongrel sessions. we know 50 and 100 are a bit expensive on the servers memory. However, we wanted to see if it made a big difference.

9

Sorry. The problem is with performance when it hits images. It seems the html design contains some small graphics and the redraw of the graphics on the initial load is a bit sluggish. Therefore, I am trying to figure out where the problem is...

If you're doing things right, static content like images will be
handled by apache, nginx etc... (ie not by mongrel).

Fred

10

How do I know if apache is serving up the images? I am the RoR developer and backend DBA and don't know the server setup. Our server engineer took off and now we have a new guy and he is not great with RoR either. Any help would be greatly appreciated!

11

A easy way to verify this is to kill the mongrels and see if the images are still served. if you post the relevant bit from your apache config someone might be able to glance an eye over it.

Fred

12

That worked so I know it is an apache problem now....guess I need to figure out why apache is angry! Any tips? :slight_smile: