From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1165041AbeE1LEw (ORCPT ); Mon, 28 May 2018 07:04:52 -0400 Received: from heliosphere.sirena.org.uk ([172.104.155.198]:59316 "EHLO heliosphere.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1164596AbeE1LEj (ORCPT ); Mon, 28 May 2018 07:04:39 -0400 Date: Mon, 28 May 2018 12:04:35 +0100 From: Mark Brown To: Arnd Bergmann Cc: Stephen Rothwell , Linux-Next Mailing List , Linux Kernel Mailing List Subject: Re: linux-next: Tree for May 24 Message-ID: <20180528110435.GA6542@sirena.org.uk> References: <20180525173025.GO4828@sirena.org.uk> <20180527184639.GD1564@sirena.org.uk> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="vkogqOf2sHV7VnPd" Content-Disposition: inline In-Reply-To: X-Cookie: You will wish you hadn't. User-Agent: Mutt/1.9.5 (2018-04-13) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --vkogqOf2sHV7VnPd Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, May 28, 2018 at 11:08:22AM +0200, Arnd Bergmann wrote: > One possible reason for slowdown on ARM allmodconfig might be the additio= n of > KCOV, though that is only enabled in mmotm at the end of your builds. It's not that - it's slow on just the main builds (x86 allmodconfig, arm multi_v7_defconfig and arm64 defconfig when I'm doing it). I think it's due to a combination of some degree of natural growth in build size and the builds now all being forked off at once rather than being run sequentially - the system ends up either context thrashing at the start of the build or using too few cores for the allmodconfig but I was too busy running the builds to experiment much. =20 My system isn't nearly so fancy as Stephen's which probably doesn't help here, I do keep thinking about upgrading so there's a good chance that next time I try I'll have done so. --vkogqOf2sHV7VnPd Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAlsL4kMACgkQJNaLcl1U h9A9gwf+IteG36TZOPXJaHT7S6Gn+XENXkC5i26K9islcaQROR7DA04R19dWrpcX 4g8g5hDXwHRzS6QpXwFL2Nx4RD3ktVlOniN8pT9ETGLU9l2V9tAKswPFDRS2j9Yq aBU2329dD09oWzBt0yKUCePn64vMcH3zUFOeml2gQ2aeSRFGnJXlYdhIJzL9yKoy cpBleRb88ZCbu0CBHDjZlYaUdc+LAxgpGe3zb3CYWdpdpTI6RyDJP29yqY1XMeBq OO3Uy2lRRzq1DAcap5RSLzi4IPaLxnqyiSxduoEM9cvnizDu2FTIxKGrLkH4eE4U /ju4TGQlQUhyKBbLClSnQutFcLB5wQ== =Avbj -----END PGP SIGNATURE----- --vkogqOf2sHV7VnPd--