In message <[EMAIL PROTECTED]>, B
osko Milekic writes:

>       When I posted the initial diff, I provided such data. I'll repeat: a
>  good example is at: http://24.201.62.9/stats/mbuf.html 

Considering the prominence of DoS attacks and similar, I think it
makes a lot of sense to be able to free the memory again, and if
the hysteresis you have built in means that there is no measurable
performance impact I think you will face no objections.

Is it possible to auto-tune min_on_avail somehow ?

What if instead you made it free only when more than 50% of the
memory allocated from the map was unused ?

Could that freeing be done by a timeout routine which runs every
N seconds ?

--
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
[EMAIL PROTECTED]         | TCP/IP since RFC 956
FreeBSD coreteam member | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.


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