Benchmark Archives - 2ndQuadrant

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Sequential UUID Generators on SSD

January 9, 2019/4 Comments/in 2ndQuadrant, Tomas' PlanetPostgreSQL /by Tomas Vondra

After I shared the sequential UUID benchmarks a couple of weeks ago, one of the points raised in feedback was the choice of the storage space. I’ve intentionally used a fairly weak storage system (RAID10 on three 7.2k SATA drives) because I wanted to demonstrate the benefits. But a couple of readers suggested using SSDs might significantly reduce […]

PostgreSQL Meltdown Benchmarks

March 4, 2018/0 Comments/in 2ndQuadrant, PostgreSQL, Tomas' PlanetPostgreSQL /by Tomas Vondra

Two serious security vulnerabilities (code named Meltdown and Spectre) were revealed a couple of weeks ago. Initial tests suggested the performance impact of mitigations (added in the kernel) might be up to ~30% for some workloads, depending on the syscall rate. Those early estimates had to be done quickly, and so were based on limited […]

PostgreSQL Meltdown

January 10, 2018/0 Comments/in Simon's PlanetPostgreSQL /by Simon Riggs

Spectre and Meltdown have caused severe alarm in recent days. You may have read about up to 30% impact on PostgreSQL databases, which I believe to be overstated because of misunderstandings in the media. Let’s dig into this in more detail. TL;DR Summary: no PostgreSQL patch required, -7% performance hit In response to these new […]

Benchmark on a Parallel Processing Monster!

February 28, 2017/8 Comments/in David's PlanetPostgreSQL /by David Rowley

Last year I wrote about a benchmark which I performed on the Parallel Aggregate feature that I worked on for PostgreSQL 9.6. I was pretty excited to see this code finally ship in September last year, however something stood out on the release announcement that I didn’t quite understand: Scale Up with Parallel Query Version 9.6 […]

Tables and indexes vs. HDD and SSD

March 17, 2016/3 Comments/in 2ndQuadrant, PostgreSQL, Tomas' PlanetPostgreSQL /by Tomas Vondra

Although in the future most database servers (particularly those handling OLTP-like workloads) will use a flash-based storage, we’re not there yet – flash storage is still considerably more expensive than traditional hard drives, and so many systems use a mix of SSD and HDD drives. That however means we need to decide how to split […]

On pglogical performance

January 8, 2016/1 Comment/in pglogical, PostgreSQL, Tomas' PlanetPostgreSQL /by Tomas Vondra

A few days ago we released pglogical, a fully open-source logical replication solution for PostgreSQL, that’ll hopefully get included into the PostgreSQL tree in a not-too-distant future. I’m not going to discuss about all the things enabled by logical replication – the pglogical release announcement presents a quite good overview, and Simon also briefly explained […]

Benchmarking Postgres-XL

November 9, 2015/5 Comments/in 2ndQuadrant, Featured, Pavan's PlanetPostgreSQL, PostgreSQL /by Pavan Deolasee

As you may have noted from my previous blog, the last few months were busy in getting Postgres-XL up-to-date with the latest 9.5 release of PostgreSQL. Once we had a reasonably stable version of Postgres-XL 9.5, we shifted our attention to measure performance of this brand new version of Postgres-XL. Our choice of the benchmark […]

Posts

Sequential UUID Generators on SSD

PostgreSQL Meltdown Benchmarks

PostgreSQL Meltdown

Benchmark on a Parallel Processing Monster!

Tables and indexes vs. HDD and SSD

On pglogical performance

Benchmarking Postgres-XL

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