Re: Hugepages usage
From: Mladen Gogala <gogala.mladen_at_gmail.com>
Date: Tue, 11 Feb 2020 11:46:55 -0500
Message-ID: <173466be-d522-135e-6cef-2d6a4a1844a0_at_gmail.com>
Date: Tue, 11 Feb 2020 11:46:55 -0500
Message-ID: <173466be-d522-135e-6cef-2d6a4a1844a0_at_gmail.com>
Of course you do see that. Using huge page will significantly shrink page tables and minimize paging. That saves CPU, particularly on the virtual machines which have expensive nested paging.
Regards
On 2/11/20 11:23 AM, Andrew Kerber wrote:
> Well, by that comment I was referring to the pre-page sga setting
> only. With regard to the hugepage settings, typically you notice
> substantially less CPU usage, especially on VMs. in my experience, it
> was about a 5% reduction of CPU usage on physical servers, and
> somewhere between 10-20% reduction on virtual servers.
-- http://www.freelists.org/webpage/oracle-lReceived on Tue Feb 11 2020 - 17:46:55 CET