| From: | Mithun Cy <mithun(dot)cy(at)enterprisedb(dot)com> |
|---|---|
| To: | Pavan Deolasee <pavan(dot)deolasee(at)gmail(dot)com> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Jaime Casanova <jaime(dot)casanova(at)2ndquadrant(dot)com>, Haribabu Kommi <kommi(dot)haribabu(at)gmail(dot)com>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Patch: Write Amplification Reduction Method (WARM) |
| Date: | 2017-03-23 18:14:12 |
| Message-ID: | CAD__OujY23cbohBb7=eh3PYWda-p4FK3Ne-_Jsj9xXNTwJBnMQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
Hi Pavan,
On Thu, Mar 23, 2017 at 12:19 AM, Pavan Deolasee
<pavan(dot)deolasee(at)gmail(dot)com> wrote:
> Ok, no problem. I did some tests on AWS i2.xlarge instance (4 vCPU, 30GB
> RAM, attached SSD) and results are shown below. But I think it is important
> to get independent validation from your side too, just to ensure I am not
> making any mistake in measurement. I've attached naively put together
> scripts which I used to run the benchmark. If you find them useful, please
> adjust the paths and run on your machine.
I did a similar test appears. Your v19 looks fine to me, it does not
cause any regression, On the other hand, I also ran tests reducing
table fillfactor to 80 there I can see a small regression 2-3% in
average when updating col2 and on updating col9 again I do not see any
regression.
--
Thanks and Regards
Mithun C Y
EnterpriseDB: http://www.enterprisedb.com
| Attachment | Content-Type | Size |
|---|---|---|
| WARM_test_02.ods | application/vnd.oasis.opendocument.spreadsheet | 14.9 KB |
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