From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55079) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eBeDl-0007qY-IT for qemu-devel@nongnu.org; Mon, 06 Nov 2017 05:01:37 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eBeDf-000211-Pf for qemu-devel@nongnu.org; Mon, 06 Nov 2017 05:01:33 -0500 Received: from mail-oi0-x22f.google.com ([2607:f8b0:4003:c06::22f]:57182) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1eBeDf-00020q-LK for qemu-devel@nongnu.org; Mon, 06 Nov 2017 05:01:27 -0500 Received: by mail-oi0-x22f.google.com with SMTP id v9so6618326oif.13 for ; Mon, 06 Nov 2017 02:01:27 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <80415da5-4eef-bf85-b617-fadc3dae4475@redhat.com> References: <80415da5-4eef-bf85-b617-fadc3dae4475@redhat.com> From: Wanpeng Li Date: Mon, 6 Nov 2017 18:01:26 +0800 Message-ID: Content-Type: text/plain; charset="UTF-8" Subject: Re: [Qemu-devel] qemu core file size List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Paolo Bonzini Cc: Alexey Kardashevskiy , Fam Zheng , "qemu-devel@nongnu.org Developers" 2017-11-06 17:41 GMT+08:00 Paolo Bonzini : > On 06/11/2017 10:11, Wanpeng Li wrote: >> Hi all, >> >> qemu core dump, max_core="unlimited", dump_guest_core=0, kill -11 pid >> to generate a qemu core file, the Rss of qemu itself is ~40MB, the >> core file is almost ~40MB in centos 6.x, but ~400MB in cents 7.x, any >> idea? > > My suspicion is the memory API, which isn't used in CentOS 6.x. QEMU > 2.11 should fix that. Could you point out the patchset for the fix? Regards, Wanpeng Li