From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shailabh Nagar Subject: Re: [Patch][RFC] Disabling per-tgid stats on task exit in taskstats Date: Thu, 29 Jun 2006 18:13:53 -0400 Message-ID: <44A450A1.4090202@watson.ibm.com> References: <44892610.6040001@watson.ibm.com> <44999F5A.2080809@watson.ibm.com> <4499D7CD.1020303@engr.sgi.com> <449C2181.6000007@watson.ibm.com> <20060623141926.b28a5fc0.akpm@osdl.org> <449C6620.1020203@engr.sgi.com> <20060623164743.c894c314.akpm@osdl.org> <449CAA78.4080902@watson.ibm.com> <20060623213912.96056b02.akpm@osdl.org> <449CD4B3.8020300@watson.ibm.com> <44A01A50.1050403@sgi.com> <20060626105548.edef4c64.akpm@osdl.org> <44A020CD.30903@watson.ibm.com> <20060626111249.7aece36e.akpm@osdl.org> <44A026ED.8080903@sgi.com> <20060626113959.839d72bc.akpm@osdl.org> <44A2F50D.8030306@engr.sgi.com> <20060628145341.529a61ab.akpm@osdl.org> <44A2FC72.9090407@engr.sgi.com> <20060629014050.d3bf0be4.pj@sgi.com> <200606291230.k5TCUg45030710@turing-police.cc.vt.edu> <20060629094408.360ac157.pj@sgi.com> <20060629110107.2e56310b.akpm@osdl.org> <44A425A7.2060900@watson.ibm.com> <20060629123338.0d3552 97.akpm@osdl.org> <44A42D6D.6060108@watson.ibm.com> <20060629130046.c695c6c5.akpm@osdl.or! g> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: pj@sgi.com, Valdis.Kletnieks@vt.edu, jlan@engr.sgi.com, balbir@in.ibm.com, csturtiv@sgi.com, linux-kernel@vger.kernel.org, hadi@cyberus.ca, netdev@vger.kernel.org Return-path: To: Andrew Morton In-Reply-To: <20060629130046.c695c6c5.akpm@osdl.org> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Andrew Morton wrote: >>Yup...the per-cpu, high speed requirements are up relayfs' alley, unless >>Jamal or netlink folks >>are planning something (or can shed light on) how large flows can be >>managed over netlink. I suspect >>this discussion has happened before :-) > > > yeah. And now I remember why I didn't go down that path earlier. Relayfs is one-way kernel->user and lacks the ability to send query commands from user space that we need. Either we would need to send commands up through a separate interface (even a syscall) or try and ensure that the exiting genetlink interface can scale better with message volume (including throttling). --Shailabh