From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33502 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725385AbgE0WWA (ORCPT ); Wed, 27 May 2020 18:22:00 -0400 Subject: Re: [PATCH v3 0/7] Statsfs: a new ram-based file system for Linux kernel statistics References: <20200526110318.69006-1-eesposit@redhat.com> <20200526153128.448bfb43@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net> <6a754b40-b148-867d-071d-8f31c5c0d172@redhat.com> <20200527132321.54bcdf04@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net> From: David Ahern Message-ID: Date: Wed, 27 May 2020 16:21:55 -0600 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-s390-owner@vger.kernel.org List-ID: To: Paolo Bonzini , Jakub Kicinski , Emanuele Giuseppe Esposito Cc: kvm@vger.kernel.org, Christian Borntraeger , Jim Mattson , Alexander Viro , Emanuele Giuseppe Esposito , David Rientjes , Jonathan Adams , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, kvm-ppc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-fsdevel@vger.kernel.org, netdev@vger.kernel.org, Andrew Lunn On 5/27/20 3:07 PM, Paolo Bonzini wrote: > I see what you meant now. statsfs can also be used to enumerate objects > if one is so inclined (with the prototype in patch 7, for example, each > network interface becomes a directory). there are many use cases that have 100's to 1000's have network devices. Having a sysfs entry per device already bloats memory usage for these use cases; another filesystem with an entry per device makes that worse. Really the wrong direction for large scale systems.