Re: [PATCHES] ARC Memory Usage analysis

Greg Stark <gsstark@mit.edu> writes:
> Tom Lane <tgl@sss.pgh.pa.us> writes:
>> Another issue is what we do with the effective_cache_size value once we
>> have a number we trust.  We can't readily change the size of the ARC
>> lists on the fly.

> Huh? I thought effective_cache_size was just used as an factor the cost
> estimation equation.

Today, that is true.  Jan is speculating about using it as a parameter
of the ARC cache management algorithm ... and that worries me.
        regards, tom lane