Re: Advice on machine specs for growth

2018-09-20 Thread Laurenz Albe
Steven Winfield wrote: > Just to be clear, are you suggesting (on linux) setting overcommit_memory = 2 > but leaving overcommit_ratio alone, which defaults to 50%? > I’ve tried setting them to 2 and 0% respectively in the past and it didn’t > end well… Yes, vm.overcommit_memory = 2 As for vm.ove

RE: Advice on machine specs for growth

2018-09-20 Thread Steven Winfield
> Disable memory overcommit and set swappiness to 0 on database servers. Just to be clear, are you suggesting (on linux) setting overcommit_memory = 2 but leaving overcommit_ratio alone, which defaults to 50%? I’ve tried setting them to 2 and 0% respectively in the past and it didn’t end well…

Re: Advice on machine specs for growth

2018-09-20 Thread Rory Campbell-Lange
On 18/09/18, Laurenz Albe (laurenz.a...@cybertec.at) wrote: > Rory Campbell-Lange wrote: > > We are looking to upgrade our current database server infrastructure so > > that it is suitable for the next 3 years or so. > > > > We envisage needing about 800GB of primary database storage in the next >

Re: Advice on machine specs for growth

2018-09-18 Thread Laurenz Albe
Rory Campbell-Lange wrote: > We are looking to upgrade our current database server infrastructure so > that it is suitable for the next 3 years or so. > > We envisage needing about 800GB of primary database storage in the next > three years, with 1000 databases in the cluster. 1000 is a lot, but

Advice on machine specs for growth

2018-09-18 Thread Rory Campbell-Lange
[I sent this to the performance list a couple of days ago and received no replies. Apologies for the cross-post] We are looking to upgrade our current database server infrastructure so that it is suitable for the next 3 years or so. Presently we have two physical servers with the same specs: