From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f70.google.com (mail-wm0-f70.google.com [74.125.82.70]) by kanga.kvack.org (Postfix) with ESMTP id C36826B0006 for ; Thu, 21 Jun 2018 11:13:11 -0400 (EDT) Received: by mail-wm0-f70.google.com with SMTP id f9-v6so2025064wmc.7 for ; Thu, 21 Jun 2018 08:13:11 -0700 (PDT) Received: from mx2.suse.de (mx2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id j34-v6si2803757edd.367.2018.06.21.08.13.10 for (version=TLS1 cipher=AES128-SHA bits=128/128); Thu, 21 Jun 2018 08:13:10 -0700 (PDT) Date: Thu, 21 Jun 2018 17:13:09 +0200 From: Michal Hocko Subject: Re: [Bug 200105] New: High paging activity as soon as the swap is touched (with steps and code to reproduce it) Message-ID: <20180621151309.GC13063@dhcp22.suse.cz> References: <20180618161735.72a1c9036057ee08d17aaaf4@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180618161735.72a1c9036057ee08d17aaaf4@linux-foundation.org> Sender: owner-linux-mm@kvack.org List-ID: To: terragonjohn@yahoo.com Cc: linux-mm@kvack.org, bugzilla-daemon@bugzilla.kernel.org, Andrew Morton On Mon 18-06-18 16:17:35, Andrew Morton wrote: [...] > > I've verified this on various desktop systems, all using SSDs. > > Obviously, I'm willing to provide more info and to test patches. Could you snapshot /proc/vmstat during your test please? Once per second or so should tell us more what is going on. -- Michal Hocko SUSE Labs