From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: virtio-dev-return-3252-cohuck=redhat.com@lists.oasis-open.org Sender: List-Post: List-Help: List-Unsubscribe: List-Subscribe: Received: from lists.oasis-open.org (oasis-open.org [66.179.20.138]) by lists.oasis-open.org (Postfix) with ESMTP id 3A6195818203 for ; Wed, 21 Feb 2018 09:44:31 -0800 (PST) Date: Wed, 21 Feb 2018 18:44:17 +0100 From: =?UTF-8?B?VG9tw6HFoSBHb2xlbWJpb3Zza8O9?= Message-ID: <20180221184417.7d5bf2df@fiorina> In-Reply-To: <20180221113328.GB19501@stefanha-x1.localdomain> References: <61ea318df06f6e50c5f9cfffaaae85aa51ae5b58.1519045824.git.tgolembi@redhat.com> <20180220171544.GC12161@stefanha-x1.localdomain> <20180221001135.41bc13a1@fiorina> <20180221113328.GB19501@stefanha-x1.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: Re: [virtio-dev] [PATCH] content: document balloon memory statistics To: Stefan Hajnoczi Cc: virtio-dev@lists.oasis-open.org, Jonathan Helman , "Michael S. Tsirkin" List-ID: On Wed, 21 Feb 2018 11:33:28 +0000 Stefan Hajnoczi wrote: > On Wed, Feb 21, 2018 at 12:11:35AM +0100, Tom=C3=A1=C5=A1 Golembiovsk=C3= =BD wrote: > > On Tue, 20 Feb 2018 17:15:44 +0000 > > Stefan Hajnoczi wrote: > >=20 > > > On Mon, Feb 19, 2018 at 02:10:29PM +0100, Tom=C3=A1=C5=A1 Golembiovsk= =C3=BD wrote: > > > > +\item[VIRTIO_BALLOON_S_CACHES (7)] The amount of memory currently = used for > > > > + caching files and other data from disk (in bytes). > > > > \end{description} =20 > > >=20 > > > This one is somewhat vague. I'm not sure if it means guest page cache > > > specifically or something more general. > > >=20 > > > On the other hand, the numbers tend to be OS specific... > >=20 > > We should come up with a definition that is as definite as possible > > while leaving room for all systems to substitute a value that is > > natively available. So if anyone has a better formulation then please > > advise. The original intent was not to create a Linux specific field. > >=20 > > On Linux the value corresponds to Buffers + Cached + SwapCached memory > > stats. Correct me if I'm wrong but that should be all clean pages that > > have a counterpart on disk and can be quickly reclaimed and used for > > something else (without additional IO). >=20 > Thanks for clarifying. Based on what you posted, how about: >=20 > "The amount of memory, in bytes, that can be quickly reclaimed without > additional I/O. Typically these pages are used for caching files from > disk." >=20 > ? Sounds reasonable, thanks Tomas >=20 > > On Windows this roughly corresponds to the standby list. Or maybe > > standby list plus something else. I suppose there may be some > > alternative on BSD too. > >=20 > > Tomas > >=20 > >=20 > > --=20 > > Tom=C3=A1=C5=A1 Golembiovsk=C3=BD --=20 Tom=C3=A1=C5=A1 Golembiovsk=C3=BD --------------------------------------------------------------------- To unsubscribe, e-mail: virtio-dev-unsubscribe@lists.oasis-open.org For additional commands, e-mail: virtio-dev-help@lists.oasis-open.org