Re: Perplexing, regular decline in performance

2019-06-25 Thread Benjamin Scherrey
ion of the operating system or resources available to the database server itself. Regardless, if you have better suggestions please serve them up. :-) -- Ben Scherrey On Tue, Jun 25, 2019 at 11:01 PM Justin Pryzby wrote: > On Tue, Jun 25, 2019 at 10:55:22PM +0700, Benjamin Scherrey wrote: >

Re: Perplexing, regular decline in performance

2019-06-25 Thread Benjamin Scherrey
Have you done a VACUUM ANALYZE FULL on your database? This needs to be done periodically to inform the server of the statistics of how the data and relations are distributed across the database. Without this bad assumptions by the planner can cause degradation of performance. Also, if you are using

Re: Why HDD performance is better than SSD in this case

2018-07-16 Thread Benjamin Scherrey
What's the on disk cache size for each drive? The better HDD performance problem won't be sustained with large amounts of data and several different queries. - - Ben Scherrey On Tue, Jul 17, 2018, 12:01 PM Neto pr wrote: > Dear, > Some of you can help me understand this. > > This query plan i

Re: Latest advice on SSD?

2018-04-10 Thread Benjamin Scherrey
You don't mention the size of your database. Does it fit in memory? If so your disks aren't going to matter a whole lot outside of potentially being i/o bound on the writes. Otherwise getting your data into SSDs absolutely can have a few multiples of performance impact. The NVME M.2 drives can real