Hi Nathan and Cameron,

Thanks for the pointers. I think I use alot of find(:all) in the code.
I am going to revise the code again. =)

Kind regards,
Joshua

On Thu, Apr 22, 2010 at 11:41 AM, Nathan de Vries <nat...@atnan.com> wrote:
> Hey Cam,
>
> About a year ago, ActiveRecord::Batches was introduced to avoid that exact
> problem. You can use either find_each() or find_in_batches() to iterate over
> large collections without loading the entire collection of records into
> memory. Those methods default to 1000 record batch sizes, but can be
> configured using the :batch_size option.
>
>
> Cheers,
>
> Nathan
>
>
>
> On 22/04/2010, at 11:31 AM, Cameron Barrie wrote:
>>
>> One simple thing to ensure if that you're not doing a
>> Class.find(:all)
>>
>> If you've got an even semi large dataset, you'll hose your memory
>> footprint by loading up 1000's of ActiveRecord objects. I know, it's a
>> mistake I've made once. User.find(:all) in a Facebook app, was a stupid
>> thing for me to do, and I've never done it again, or anything like it...
>> You should limit those finds to a certain number.
>>
>> There is tons of other things to look for, but this is a simple starting
>> point.
>>
>> -Cam
>>
>>
>> On 22/04/2010, at 11:18 AM, Joshua Partogi wrote:
>>>
>>> Hi all,
>>>
>>>
>>> Currently I am running Rails application online and it is running dog
>>> slow. The current memory that I have on the VPS right now is 360MB,
>>> which I thought was more than enough. How much would you recommend,
>>> based on your experience, I should allocate for a Rails apps? Is there
>>> anything else I should look out for to make the application perform
>>> much better? I know that this is quite an open ended question, but as
>>> I am still new with this, any suggestion is most welcome.
>>>
>>>
>>> Thank you very much for the insights all. Really appreciate it.
>>>
>>>
>>> Kind regards,
>>> Joshua




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