From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51624) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dkj5c-0004VF-Cg for qemu-devel@nongnu.org; Wed, 23 Aug 2017 23:45:53 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dkj5Z-0007CI-A0 for qemu-devel@nongnu.org; Wed, 23 Aug 2017 23:45:52 -0400 Received: from ozlabs.org ([103.22.144.67]:54727) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dkj5Y-00076u-J9 for qemu-devel@nongnu.org; Wed, 23 Aug 2017 23:45:49 -0400 Date: Thu, 24 Aug 2017 13:01:16 +1000 From: David Gibson Message-ID: <20170824030116.GC5379@umbus.fritz.box> References: <3f0dc918-0f55-e2f4-bf47-fe4abf5453bb@redhat.com> <20170822112046.GC12356@umbus.fritz.box> <20170822134815.77020eb8.cohuck@redhat.com> <20170823002907.GC5379@umbus.fritz.box> <20170823091650.48e7c44e.cohuck@redhat.com> <54526d47-b436-79d5-7a38-9516eaa727a6@redhat.com> <5b0ff74a-08d6-558d-4c79-a93758e6302a@redhat.com> <0bb344a3-f8f8-3365-cef1-1c68cf7d160d@redhat.com> <85908531-fc26-5647-9b62-38485f77d11c@redhat.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="e7WmlSfQJTtHfSol" Content-Disposition: inline In-Reply-To: <85908531-fc26-5647-9b62-38485f77d11c@redhat.com> Subject: Re: [Qemu-devel] make check speed List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Paolo Bonzini Cc: Thomas Huth , Cornelia Huck , Peter Maydell , Laurent Vivier , "Michael S. Tsirkin" , Richard Henderson , QEMU Developers , Alex =?iso-8859-1?Q?Benn=E9e?= , Fam Zheng , Philippe =?iso-8859-1?Q?Mathieu-Daud=E9?= , Cleber Rosa , =?utf-8?B?THVrw6HFoQ==?= Doktor --e7WmlSfQJTtHfSol Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Aug 23, 2017 at 11:33:55AM +0200, Paolo Bonzini wrote: > On 23/08/2017 10:35, Thomas Huth wrote: > >> If you have a many-core machine, of course, there's no simpler solution > >> than throwing more CPUs at it. :) > > Is it safe nowadays to run "make check -j4" for example? Last time I > > tried (maybe 1 or 2 years ago), there were still issues since some tests > > were using hard-coded temporary file names, so the parallel tests were > > disturbing each other, for example... >=20 > I run -j18 all the time. :) Nice for those that have 18-way machines at their regular disposal... --=20 David Gibson | I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_ | _way_ _around_! http://www.ozlabs.org/~dgibson --e7WmlSfQJTtHfSol Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEdfRlhq5hpmzETofcbDjKyiDZs5IFAlmeQXwACgkQbDjKyiDZ s5I80w/8DCFngCGcjy+7P4Ld3bWTpSWsTklG5SqOE/zu6yqGn7txcoX8FwQyP69E hlo0xf6PBtBHsrOhdW1wahNG1K9xrz0TamoSIoS8YKP4Fft6Z8jdjkC06Bbf3Aox XJ7g+zquFyFWh2gcgj/PYmgFa2laHOi2rk9wbWf2pPpjCljVnuSiR5xIOQKGCjZl 0YYICCipRjxcl50Sy7lQKAUmnjX0j39LEkhiB2LBie1d4HcWaDU3dHONtH4i/8GD 7ODHfxDySIS0B7qIb0yBP9tG7NpgZM2Tz1WHkh942up/ecXhtXvrluCULpWMd8ul fuQOnFstbXfzFGGzOTpWO2VUmrNcPr4pLzxrGks+ue5fyhlmr04rUYt6OySEYMF6 iMsDEcQnX8Sej1yY8gkTqpPbkf40eCGh4AkUEPsfJHRhviallzVSasaTJpEpHR3n XCuN3eDOcs2Vp02GR866JiXTcAGqG9YxDZd7q/ppqCuB05PbS3MoySw8ajbPB+dT fR4A51WBVpgbEfYFwu7eZx5ta+CBs9JUYy/mCPCcoY7aE2F1AP79L3kYOoMn7gAn SMQYdfn3UbuozyCHfBdgkoR2QjbgUko9tNDgsy8qbVQukgyJcJvviSjx6Q5oh+pJ 3ek4LO/JIEtJMvkEeCDlWCh4oXSBhnR2VydRhRK2AfJGoGPzo8Y= =x7pE -----END PGP SIGNATURE----- --e7WmlSfQJTtHfSol--