From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 03241C433EF for ; Thu, 4 Nov 2021 16:23:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D6F0C61212 for ; Thu, 4 Nov 2021 16:23:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231689AbhKDQZv (ORCPT ); Thu, 4 Nov 2021 12:25:51 -0400 Received: from out5-smtp.messagingengine.com ([66.111.4.29]:37093 "EHLO out5-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231642AbhKDQZt (ORCPT ); Thu, 4 Nov 2021 12:25:49 -0400 Received: from compute6.internal (compute6.nyi.internal [10.202.2.46]) by mailout.nyi.internal (Postfix) with ESMTP id 4A01A5C00EB; Thu, 4 Nov 2021 12:23:11 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute6.internal (MEProxy); Thu, 04 Nov 2021 12:23:11 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm1; bh=F7ThL3 bEF0AwmWK+5lDaywNOm4dgdIO3a3tYFPwmG3o=; b=NpcSFCK0fMEOT44lm2kABk 7iIBZ1uXApevFBQirHZtrK+BmmBviHHZrxe73HV5x6R29UM6SCFu1nh6mUNYWGEj v8D1Ei95G900i3Ga00+cC1zz7Oy+WdOsor199CfoiDmSN21Ou1cMIkz/l5Rb3Ixd +C4ESfHMyYfZBEE3dhkCW2GzEe0XlrR1xkWU3T9LRSMzgjhgpRuVjciVlT8V0pkn UoUe1qP38PxukvedPDS1Ja3CO66Vb73QjaG22rfkkmW6t6Zd/rrharXZFMi47tSe /LHLZZPKkeXI5divGR5geziI4u0edTHd/N6ZqGVF40NC4a/egzjUWP2LuDZ3IoHw == X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvuddrtdeggdekfecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenuc fjughrpeffhffvuffkfhggtggujgesghdtreertddtjeenucfhrhhomhepofgrrhgvkhcu ofgrrhgtiiihkhhofihskhhiqdfikphrvggtkhhiuceomhgrrhhmrghrvghksehinhhvih hsihgslhgvthhhihhnghhslhgrsgdrtghomheqnecuggftrfgrthhtvghrnhepheevvdeu veehkeehhfevgffggfevudegteeugfeliedvhefgueeiuefgteetieffnecuffhomhgrih hnpehkvghrnhgvlhdrohhrghenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhep mhgrihhlfhhrohhmpehmrghrmhgrrhgvkhesihhnvhhishhisghlvghthhhinhhgshhlrg gsrdgtohhm X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Thu, 4 Nov 2021 12:23:08 -0400 (EDT) Date: Thu, 4 Nov 2021 17:23:04 +0100 From: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= To: Boris Ostrovsky Cc: Juergen Gross , xen-devel@lists.xenproject.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Jonathan Corbet , Stefano Stabellini , stable@vger.kernel.org Subject: Re: [PATCH v4] xen/balloon: add late_initcall_sync() for initial ballooning done Message-ID: References: <20211102091944.17487-1-jgross@suse.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="dtfzIy7fiid+QMXP" Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org --dtfzIy7fiid+QMXP Content-Type: text/plain; protected-headers=v1; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Date: Thu, 4 Nov 2021 17:23:04 +0100 From: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= To: Boris Ostrovsky Cc: Juergen Gross , xen-devel@lists.xenproject.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Jonathan Corbet , Stefano Stabellini , stable@vger.kernel.org Subject: Re: [PATCH v4] xen/balloon: add late_initcall_sync() for initial ballooning done On Thu, Nov 04, 2021 at 11:55:34AM -0400, Boris Ostrovsky wrote: > This appears to have noticeable effect on boot time (and boot experience = in general). Yes, this is kind of intentional. It avoids killing the domain ("out of PoD memory") for the price of increased boot time. I still wonder why it wasn't an issue before, although it could just be a race that was less likely to loose before. You can find some analysis of mine here: https://lore.kernel.org/xen-devel/YXFxKC4shCATB913@mail-itl/ --=20 Best Regards, Marek Marczykowski-G=C3=B3recki Invisible Things Lab --dtfzIy7fiid+QMXP Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEhrpukzGPukRmQqkK24/THMrX1ywFAmGECOgACgkQ24/THMrX 1yyYIQf+PK+WvewHZdnNVSkmaod5zSxBqVeO47i4A1ZdTACkgC6EgUbGDQtW3KtD DARSfTbbDwto5VbzM13WfSiY9/0dNCSS79La3iYcIpML6q4jTGDC1/bu0mWlPFSN GAn+RdG5XUN3c/YYlcqt/T+I/KGlEqazXo9P0q/704xDs6NQ3KFQB8bPq5cs9lp4 kpavY28wk2cSHT7c1LTiMkNQQRDM5VHdrH+NAf6sqZIj8GxJDk7v/FKki4sUxa7R FdjiI0dgFGISxy48+6HXnw0mZHKNZXdA8pa0P7Lyw71AGq4PRmMzPjc36Zp0x8Om RAeCy9mXJL2bbd17vEoH11N+53Eh3A== =Vps0 -----END PGP SIGNATURE----- --dtfzIy7fiid+QMXP--