From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Justin T. Gibbs" Subject: Re: FreeBSD PVHVM call for testing Date: Wed, 19 Jun 2013 10:52:06 -0600 Message-ID: References: <519131D8.9010307@citrix.com> <519E54DE.5090304@citrix.com> <51B5E730.6070007@citrix.com> <51B9FF53.2020901@citrix.com> <2C70BC9B-5964-498F-AAE2-E5024160E3E5@dckd.nl> <51C1972B.50703@citrix.com> <51C1A223.6030305@citrix.com> <6E99C9B2-E28D-4793-81C2-97440AC5AD0E@dckd.nl> <51C1A7AA.2010307@citrix.com> <546D0358-4F92-4E8C-AED0-94FC5D36086F@dckd.nl> Mime-Version: 1.0 (Mac OS X Mail 6.5 \(1508\)) Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <546D0358-4F92-4E8C-AED0-94FC5D36086F@dckd.nl> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Jeroen van der Ham Cc: freebsd-xen@freebsd.org, xen-users@lists.xen.org, xen-devel , freebsd-virtualization@freebsd.org, =?windows-1252?Q?Roger_Pau_Monn=E9?= List-Id: xen-devel@lists.xenproject.org On Jun 19, 2013, at 10:50 AM, Jeroen van der Ham wrote: > Hi, > = > On 19 Jun 2013, at 18:15, Justin T. Gibbs wrote: >> = >> I've never seen a kernel build take 2 hours, much less 2 hours *longer*.= Are you talking about buildworld? It would be interesting to know your r= esults building stable/9 sources in your 10 environment to see if this is j= ust due to "build bloat" or a true performance regression. >> = > = > I copy/pasted the command from the wiki: > = >> # make kernel-toolchain && make buildkernel KERNCONF=3DXENHVM && make in= stallkernel KERNCONF=3DXENHVM > = > On the stable/9 I only did = > = >> make buildkernel KERNCONF=3DXENHVM && make installkernel KERNCONF=3DXENH= VM > = > = > I guess the kernel-toolchain takes a long time to build=85and from what I= can see it does a clean before rebuilding also. > = > I'm doing the kernel-toolchain step only now and will report how long it = took. > = > Jeroen. Oh. Without any parallelism (-j X), the build will take a really long time= . Even with only one core, you'll get a large speedup by performing a para= llel build since many steps of the build are I/O bound. -- Justin