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From Jon Travis <jtra...@covalent.net>
Subject Re: Observations on fragmentation in SMS pools
Date Sun, 08 Jul 2001 18:34:16 GMT
On Sun, Jul 08, 2001 at 11:27:08AM -0700, Ian Holsman wrote:
> Justin Erenkrantz wrote:
> 
> >On Sun, Jul 08, 2001 at 11:04:09AM -0700, Jon Travis wrote:
> >
> >>As for the ability to use shared memory for this ... yeah that is
> >>an interesting idea.  What are your actual use cases for that?
> >>
> >
> >Ian posted a patch to do something like this - I think he wanted a hash
> >table that was shared across all processes.  The problem gets to be 
> >growing the memory space, but I think his use case was with fixed 
> >memory.  He could probably tell more about how he wanted to do it.  
> >
> 
> yep... It didn't  had a fixed amount of memory which you specified at 
> the start, and had fixed element/key sizes
> It was implemented using arrays/offsets, so it didn't have to deal with 
> pointers.
> 
> I was thinking mmap'ed files could be used to provide expandability.. ..
> 
> hmm... sms - mmap might be interesting..
> 
> The code I posted didn't work as well as the current stuff does BTW, I 
> can put i t up on a website if you would like.

I'm still curious about the use case.  I'm sure there is one, if you
could just enlighten me.  I already know it's 'cool'.

-- Jon

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