| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | Greg Stark <stark(at)mit(dot)edu> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Ants Aasma <ants(at)cybertec(dot)at>, Atri Sharma <atri(dot)jiit(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila(at)huawei(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Page replacement algorithm in buffer cache |
| Date: | 2013-03-26 16:39:23 |
| Message-ID: | 20130326163923.GC20871@momjian.us |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Fri, Mar 22, 2013 at 06:06:18PM +0000, Greg Stark wrote:
> On Fri, Mar 22, 2013 at 2:02 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)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).
The problem was cache line overhead between CPUs to manage the ARC
queues.
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ It's impossible for everything to be true. +
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Bruce Momjian | 2013-03-26 16:40:54 | Re: Page replacement algorithm in buffer cache |
| Previous Message | Greg Stark | 2013-03-26 16:18:37 | Re: Ideas for improving Concurrency Tests |