Re: Page replacement algorithm in buffer cache

On Fri, Mar 22, 2013 at 1:13 PM, Atri Sharma <atri.jiit@gmail.com> wrote:
> On Fri, Mar 22, 2013 at 11:36 PM, Greg Stark <stark@mit.edu> wrote:
>> On Fri, Mar 22, 2013 at 2:02 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>>> And we definitely looked at ARC
>>
>> We didn't just look at it. At least one release used it. Then patent
>> issues were raised (and I think the implementation had some contention
>> problems).
>>
>>
>> --
>> greg
>
> What is the general thinking? Is it time to start testing again and
> thinking about improvements to the current algorithm?

well, what problem are you trying to solve exactly?  the main problems
I see today are not so much in terms of page replacement but spinlock
and lwlock contention.

merlin