Re: [Postgres-xc-general] what happens to pgxc and transition to xl

[Pavan D. <pav...@gm...>]

Hi Sandeep,

We're working to consolidate XC and XL efforts, but it may take some time.
In the meanwhile, both XC and XL are being enhanced independently, often
leveraging from each other's work.

We've recently fixed several performance related issues in XL, especially
for OLTP-like workload and I'm quite hopeful that the gap between XC and XL
for such workloads must have drastically reduced, if not crossed already.
For OLAP complex queries, XL should generally do better than XC.

Do you mind testing the latest XL 9.5 code base in your environment and let
us know if the performance is satisfactory? Our goal is to keep improving
performance for both OLAP as well as OLTP workloads. So if there are gaps,
those must be filled. The latest code is available here and I would suggest
using XL9_5_STABLE branch for the tests.
git://git.postgresql.org/git/postgres-xl.git

Thanks,
Pavan

On Thu, Jan 21, 2016 at 6:47 AM, Sandeep Gupta <gup...@gm...>
wrote:

> Hi,
>
> In the past we  had used postgres-xc to successfully
> scale our workload which mostly consisted of simple
> filter-join-groupby expression.
> All this required some careful data distribution strategies but on
> average we were
> able to extract good performance.
>
>  We tested our workloads with XL and the performance, at least for our
> workload, was
>  not at par. In this regard, I was wondering what is the future
> direction of XC.
>  If it is shelved, then shouldn't there be a way to match the
> performance in XL given
>  that XL has more generic framework compared to XC.
>
>
>
>  Best,
>  Sandeep
>
>
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