Re: zheap: a new storage format for PostgreSQL

On Thu, Dec 6, 2018 at 10:03 AM Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> wrote:
>
> čt 6. 12. 2018 v 5:02 odesílatel Mithun Cy <mithun(dot)cy(at)enterprisedb(dot)com> napsal:
>>
>> COPY command seems to have improved very slightly with zheap in both with size of wal and execution time. I also did some tests with insert statement where I could see some regression in zheap when compared to heap with respect to execution time. With further more investigation I will reply here.
>>
>
> 20% of size reduction looks like effect of fill factor.
>

I think it is because of smaller zheap tuple sizes. Mithun can tell
more about setup whether he has used different fillfactor or anything
else which could lead to such a big difference.

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