Re: Compression of full-page-writes

On Tue, Oct 22, 2013 at 9:22 AM, Fujii Masao <masao(dot)fujii(at)gmail(dot)com> wrote:
> On Tue, Oct 22, 2013 at 12:47 PM, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
>> On Mon, Oct 21, 2013 at 4:40 PM, KONDO Mitsumasa
>> <kondo(dot)mitsumasa(at)lab(dot)ntt(dot)co(dot)jp> wrote:
>>> (2013/10/19 14:58), Amit Kapila wrote:
>>>> On Tue, Oct 15, 2013 at 11:41 AM, KONDO Mitsumasa
>>>> <kondo(dot)mitsumasa(at)lab(dot)ntt(dot)co(dot)jp> wrote:
>>
>>> In
>>> actual, many of NoSQLs use snappy for purpose of higher performance.
>>
>> Okay, you can also check the results with snappy algorithm, but don't
>> just rely completely on snappy for this patch, you might want to think
>> of another alternative for this patch.
>
> So, our consensus is to introduce the hooks for FPW compression so that
> users can freely select their own best compression algorithm?

We can also provide GUC for whether to enable WAL compression, which
I think you are also planing to include based on some previous e-mails
in this thread.

You can consider my vote for this idea. However I think we should wait
to see if anyone else have objection to this idea.

> Also, probably we need to implement at least one compression contrib module
> using that hook, maybe it's based on pglz or snappy.

With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com