On Tue, Jul 30, 2024 at 03:04:54PM +0300, Kihaguru Gathura wrote: > Hi, > > I am seeking advice on optimizing a PostgreSQL query that is consuming a > significant amount of CPU resources on my Dell PowerEdge T340 server. The > server has an Intel Xeon E-2124 CPU @ 3.30GHz (4 cores, no Hyper-Threading) > and 16GB RAM, running OpenBSD 7.3 (GENERIC.MP) #1125. > > The query in question occasionally utilizes around 40% of the CPU, with > CPU1 and CPU2 being more utilized compared to CPU0 and CPU3. This suggests > that the workload might not be well-balanced across all cores. > > I am monitoring the system to ensure that CPU usage by PostgreSQL does not > lead to performance issues, especially if more queries are executed > simultaneously. Other processes (such as httpd, relayd, etc.) are consuming > minimal CPU time, indicating they are not contributing significantly to the > overall load. > > The *top output* and *dmesg output* are included below. Given this setup, > could someone please provide guidance on the best practices for optimizing > PostgreSQL performance under OpenBSD? Are there specific kernel or > PostgreSQL configurations that might help distribute the load more evenly > across all CPU cores, or is this a case that requires a more powerful CPU?
Did you EXPLAIN ANALYZE your query to see why it performs so bad? In other words: Are you using the right indexes? -- :wq Claudio
