Re: AW: Performance

Eickvonder Bjoern wrote:
>>>PS: By the way where and in what kind of form can/should I post 
>>>XIndice patches that I developed like a solution for the "too many 
>>>open files problem" that can occur on linux systems (if you have a 
>>>large number of collections)?
> 
> 
>>IMHO, you can create your collections with custom configuration which
>>specifies maximum number of descriptors allowed (See
>>CONFIG_DESCRIPTORS_MAX =
>>"max-descriptors") instead of relying on the default
>>(DEFAULT_DESCRIPTORS_MAX = 16).
> 
> 
> Yes I know but what if at one time a collection "A" gets a high load and
> would need 16 and sometimes later a collection "B" gets this high load
> while "A" is not used. In that case I would prefer that the open
> descriptors for "A" get closed if they are not used for a (configurable)
> amount of time

There is a problem with such reasoning, it is: "what if *all* collections get 
high load at the same time?". In this situation, you can't borrow descriptor 
from another collection, and you can't block and wait - this might cause 
deadlocks. Any ideas? :)


> and that is  what I implemented (though it's still being
> tested and not yet configurable). 

Ok.

Vadim