Re: Patch: Write Amplification Reduction Method (WARM) - Mailing list pgsql-hackers

On Sat, Nov 12, 2016 at 10:12 PM, Pavan Deolasee <pavan.deolasee@gmail.com> wrote:

On Tue, Nov 8, 2016 at 9:13 AM, Haribabu Kommi <kommi.haribabu@gmail.com> wrote:

Thanks for the patch. This shows a very good performance improvement.

Thank you. Can you please share the benchmark you ran, results and observations? 

I just ran a performance test on my laptop with minimal configuration, it didn't show much

improvement, currently I don't have access to a big machine to test the performance.

 

I started reviewing the patch, during this process and I ran the regression

test on the WARM patch. I observed a failure in create_index test.

This may be a bug in code or expected that needs to be corrected.

Can you please share the diff? I ran regression after applying patch on the current master and did not find any change? Does it happen consistently?

Yes, it is happening consistently. I ran the make installcheck. Attached the regression.diffs file with the failed test.

I applied the previous warm patch on this commit - e3e66d8a9813d22c2aa027d8f373a96d4d4c1b15