Database World

pgpool-II is a well-known tool to pool PostgreSQL connections and load-balance work loads. In this blog, we will verify whether pgpool works well on ARM64 architecture. ARM64 packages On Ubuntu, pgpool2 ARM64 debian package is made available by the Debian PostgreSQL Maintainers : $ dpkg -s pgpool2 Maintainer: Debian PostgreSQL Maintainers <team+postgresql@tracker.debian.org> Architecture: arm64 Version: 4.1.4-3.pgdg18.04+2 Replaces: pgpool Depends: libpgpool0 (= 4.1.4-3.pgdg18.04+2), lsb-base (>= 3.0-3), postgresql-common (>= 26), ucf, libc6 (>= 2.17), libmemcached11, libpam0g (>= 0.99.7.1), libpq5, libssl1.1 (>= 1.1.0) On CentOS, the ARM64 yum packages are not available. But you can always download the source from the repository or using git and then install from the source.   Installation from source pgpool build requires installed PostgreSQL on the same machine. The build uses 'pg_config' command to locate the required PostgreSQL header files, library

Query parallelism is supported in PostgreSQL since quite a while now. People in the PG community call it "Parallel query", but by now it is not limited to just SELECT queries. Index build leverages multiple cores; and even utilities like VACUUM now make use of parallelism. Furthermore, community is working on parallelizing COPY and INSERTs.                                                                                  I was interested to do kind-of "sanity" check of this capability specifically on ARM64 platform. Let's see how it goes. And also at the same time, we will try to understand little bit of how to interpret the parallelism part of the plan output. Subqueries and partitions are not covered in this blog; probably I will add it in another blog.                                                                                  For running the queries I generated a scale-5 TPC-H benchmark schema with the help of scripts taken from https://github.com/tvond