----- Original Message -----
From: "Sven Kieske" <S.Kieske@mittwald.de> To: "Doron Fediuck" <dfediuck@redhat.com>, "Nicolas Ecarnot" <nicolas@ecarnot.net> Cc: users@ovirt.org Sent: Monday, June 23, 2014 9:21:05 AM Subject: Re: [ovirt-users] What prevents from using a very very low-end hardware for manager?
Am 22.06.2014 10:06, schrieb Doron Fediuck:
Nicolas (and other on this thread), I'd like to clarify one thing, as indeed this sometimes comes up as a question- Where did oVirt prerequisites come from?
Since the engine may be installed with DWH & reporting, we need to consider all components' needs including the DB;
The application server is configured to use 1 GiB of heap by default, plus around 500 threads, which should result around 2 GiB of RSS in the worst case. To that you have to add the RSS taken by the database, the operating system, etc.
well, yeah, "worst case" but the 4 GB you mention, aren't specified as worst case, but as a minimum. how can a worst case scenario be the minimum?
See below; 4 GiB is the minimum to allow DWH & reporting, and 8 GiB is the recommended amount of RAM.
On CentOS you're not able imho until some release to even install DWH without third party repos.
This is being worked on for 3.5.0. Either way you will get warnings in the installation now but it will not be blocked.
Anyway thanks for the interesting insight where all those numbers come from!
Adding Jasper requirements as well:
Resource Footprint Minimum Recommended Disk ~1.3 GiB 10GB free 40GB + RAM 4GB 8GB + Processor 2 core minimum 2.5GHz + multi-core Pentium
So the end results[1] is around the above numbers to make sure we allow this installation to work. It is possible to get along with less, if you will not install some of the components, but this is what we should expect from a standard installation.
Doron
-- Mit freundlichen Grüßen / Regards
Sven Kieske
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