From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751157AbWFBFzt (ORCPT ); Fri, 2 Jun 2006 01:55:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751158AbWFBFzs (ORCPT ); Fri, 2 Jun 2006 01:55:48 -0400 Received: from omta01ps.mx.bigpond.com ([144.140.82.153]:60002 "EHLO omta01ps.mx.bigpond.com") by vger.kernel.org with ESMTP id S1751157AbWFBFzs (ORCPT ); Fri, 2 Jun 2006 01:55:48 -0400 Message-ID: <447FD2E1.7060605@bigpond.net.au> Date: Fri, 02 Jun 2006 15:55:45 +1000 From: Peter Williams User-Agent: Thunderbird 1.5.0.2 (X11/20060501) MIME-Version: 1.0 To: sekharan@us.ibm.com CC: balbir@in.ibm.com, dev@openvz.org, Andrew Morton , Srivatsa , Sam Vilain , ckrm-tech@lists.sourceforge.net, Balbir Singh , Mike Galbraith , Con Kolivas , Linux Kernel , Kingsley Cheung , "Eric W. Biederman" , Ingo Molnar , Rene Herman Subject: Re: [ckrm-tech] [RFC 3/5] sched: Add CPU rate hard caps References: <20060526042021.2886.4957.sendpatchset@heathwren.pw.nest> <20060526042051.2886.70594.sendpatchset@heathwren.pw.nest> <661de9470605262348s52401792x213f7143d16bada3@mail.gmail.com> <44781167.6060700@bigpond.net.au> <447D95DE.1080903@sw.ru> <447DBD44.5040602@in.ibm.com> <447E9A1D.9040109@openvz.org> <447EA694.8060407@in.ibm.com> <1149187413.13336.24.camel@linuxchandra> In-Reply-To: <1149187413.13336.24.camel@linuxchandra> Content-Type: multipart/mixed; boundary="------------050405030407020507070308" X-Authentication-Info: Submitted using SMTP AUTH PLAIN at omta01ps.mx.bigpond.com from [147.10.133.38] using ID pwil3058@bigpond.net.au at Fri, 2 Jun 2006 05:55:45 +0000 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org This is a multi-part message in MIME format. --------------050405030407020507070308 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Chandra Seetharaman wrote: > On Thu, 2006-06-01 at 14:04 +0530, Balbir Singh wrote: >> Hi, Kirill, >> >> Kirill Korotaev wrote: >>>> Do you have any documented requirements for container resource >>>> management? >>>> Is there a minimum list of features and nice to have features for >>>> containers >>>> as far as resource management is concerned? >>> Sure! You can check OpenVZ project (http://openvz.org) for example of >>> required resource management. BTW, I must agree with other people here >>> who noticed that per-process resource management is really useless and >>> hard to use :( > > I totally agree. "nice" seems to be doing quite nicely :-) To me this capping functionality is a similar functionality to that provided by "nice" and all that's needed to make it useful is a command (similar to "nice") that runs tasks with caps applied. To that end I've written a small script (attached) that does this. As this is something that a user might like to combine with "nice" the command has an option for setting "nice" as well as caps. Usage: withcap [options] command [arguments ...] withcap -h Options: [-c ] [-C ] [-n ] -c Set CPU usage rate soft cap -C Set CPU usage rate hard cap -n Set nice value -h Display this help Peter -- Peter Williams pwil3058@bigpond.net.au "Learning, n. The kind of ignorance distinguishing the studious." -- Ambrose Bierce --------------050405030407020507070308 Content-Type: application/x-shellscript; name="withcap.sh" Content-Transfer-Encoding: base64 Content-Disposition: inline; filename="withcap.sh" IyEvYmluL3NoCiMKIyBDb3B5cmlnaHQgKGMpIDIwMDYgYnkgUGV0ZXIgV2lsbGlhbXMKIyBB bGwgcmlnaHRzIHJlc2VydmVkCiMKIyBBdXRob3I6IFBldGVyIFdpbGxpYW1zIDxwd2lsMzA1 OEBiaWdwb25kLm5ldC5hdT4KIwojIFRoaXMgcHJvZ3JhbSBpcyBmcmVlIHNvZnR3YXJlOyB5 b3UgY2FuIHJlZGlzdHJpYnV0ZSBpdCBhbmQvb3IgbW9kaWZ5CiMgaXQgdW5kZXIgdGhlIHRl cm1zIG9mIHRoZSBHTlUgR2VuZXJhbCBQdWJsaWMgTGljZW5zZSBhcyBwdWJsaXNoZWQgYnkK IyB0aGUgRnJlZSBTb2Z0d2FyZSBGb3VuZGF0aW9uOyB2ZXJzaW9uIDIgb2YgdGhlIExpY2Vu c2Ugb25seS4KIwojIFRoaXMgcHJvZ3JhbSBpcyBkaXN0cmlidXRlZCBpbiB0aGUgaG9wZSB0 aGF0IGl0IHdpbGwgYmUgdXNlZnVsLAojIGJ1dCBXSVRIT1VUIEFOWSBXQVJSQU5UWTsgd2l0 aG91dCBldmVuIHRoZSBpbXBsaWVkIHdhcnJhbnR5IG9mCiMgTUVSQ0hBTlRBQklMSVRZIG9y IEZJVE5FU1MgRk9SIEEgUEFSVElDVUxBUiBQVVJQT1NFLiAgU2VlIHRoZQojIEdOVSBHZW5l cmFsIFB1YmxpYyBMaWNlbnNlIGZvciBtb3JlIGRldGFpbHMuCgpteXVzYWdlX2xvdyAoKSB7 CgllY2hvICJVc2FnZToiCgllY2hvIC1lICJcdHdpdGhjYXAgW29wdGlvbnNdIGNvbW1hbmQg W2FyZ3VtZW50cyAuLi5dIgoJZWNobyAtZSAiXHR3aXRoY2FwIC1oIgoJZWNobyAiT3B0aW9u czoiCgllY2hvIC1lICJcdFstYyA8Q1BVIHJhdGUgc29mdCBjYXA+XSIKCWVjaG8gLWUgIlx0 Wy1DIDxDUFUgcmF0ZSBoYXJkIGNhcD5dIgoJZWNobyAtZSAiXHRbLW4gPG5pY2UgdmFsdWU+ XSIKfQoKbXl1c2FnZSAoKSB7CglteXVzYWdlX2xvdwp9CgpteWhlbHAgKCkgewoJbXl1c2Fn ZV9sb3cKCWVjaG8KCWVjaG8gLWUgIlx0LWMgU2V0IENQVSB1c2FnZSByYXRlIHNvZnQgY2Fw IgoJZWNobyAtZSAiXHQtQyBTZXQgQ1BVIHVzYWdlIHJhdGUgaGFyZCBjYXAiCgllY2hvIC1l ICJcdC1uIFNldCBuaWNlIHZhbHVlIgoJZWNobyAtZSAiXHQtaCBEaXNwbGF5IHRoaXMgaGVs cCIKfQoKY2ZsYWc9CkNmbGFnPQpuZmxhZz0KaGZsYWc9CndoaWxlIGdldG9wdHMgYzpDOmhu OiBuYW1lCmRvCgkjIG5vIG9wdGlvbnMgYWZ0ZXIgLWgKCWlmIFsgISAteiAiJGhmbGFnIiBd IDsgdGhlbgoJCW15dXNhZ2UKCQlleGl0IDEKCWZpCgoJIyBwcmV2ZW50IGR1cGxpY2F0ZSBh cmd1bWVudHMKCWV2YWwgdGhpc2ZsYWc9XCQke25hbWV9ZmxhZwoJaWYgWyAhIC16ICIkdGhp c2ZsYWciIF0gJiYgWyAiJHRoaXNmbGFnIiAhPSAiMGZsYWciIF07Cgl0aGVuCgkJZWNobyAt ZSAiRXJyb3I6IG11bHRpcGxlIHVzZSBvZiAtJG5hbWUgb3B0aW9uXG4iCgkJbXl1c2FnZQoJ CWV4aXQgMQoJZmkKCWNhc2UgJG5hbWUgaW4KCWMpCWlmIFsgISAteiAiYGVjaG8gIiRPUFRB UkciIHwgZ3JlcCAnXlswLTldWzAtOV0qJCdgIiBdOwoJCXRoZW4KCQkJY2ZsYWc9MQoJCQlz b2Z0X2NhcD0iJE9QVEFSRyIKCQllbHNlCgkJCWVjaG8gLWUgIi1jICRPUFRBUkc6IHBvc2l0 aXZlIGludGVnZXIgZXhwZWN0ZWQiCgkJCWV4aXQgMgoJCWZpCgkJOzsKCUMpCWlmIFsgISAt eiAiYGVjaG8gIiRPUFRBUkciIHwgZ3JlcCAnXlswLTldWzAtOV0qJCdgIiBdOwoJCXRoZW4K CQkJQ2ZsYWc9MQoJCQloYXJkX2NhcD0iJE9QVEFSRyIKCQllbHNlCgkJCWVjaG8gLWUgIi1D ICRPUFRBUkc6IHBvc2l0aXZlIGludGVnZXIgZXhwZWN0ZWQiCgkJCWV4aXQgMgoJCWZpCgkJ OzsKCWgpCWhmbGFnPTEKCQk7OwoJbikJbmZsYWc9MQoJCW5pY2U9IiRPUFRBUkciCgkJZWNo byAibiBzZWVuIgoJCTs7Cgk/KQlteXVzYWdlCgkJZXhpdCAxCgkJOzsKCWVzYWMKZG9uZQpz aGlmdCBgZXhwciAkT1BUSU5EIC0gMWAKaWYgWyAhIC16ICIkaGZsYWciIF07IHRoZW4KCW15 aGVscAoJZXhpdCAwCmZpCiMgbXVzdCBoYXZlIHNvbWUgYXJndW1lbnRzIGFmdGVyIHRoZSBv cHRpb25zCmlmIFsgLXogIiQqIiBdOyB0aGVuCgllY2hvIC1lICJFcnJvcjogY29tbWFuZCBl eHBlY3RlZFxuIgoJbXl1c2FnZQoJZXhpdCAxCmZpCgppZiBbICEgLXogIiRjZmxhZyIgXTsg dGhlbgoJaWYgISBlY2hvICRzb2Z0X2NhcCA+IC9wcm9jLyQkL3Rhc2svJCQvY3B1X3JhdGVf Y2FwOyB0aGVuCgkJZWNobyAiRXJyb3I6IHNldHRpbmcgc29mdCBjYXAgb2YgJHNvZnRfY2Fw IgoJCWV4aXQgMwoJZmkKZmkKCmlmIFsgISAteiAiJENmbGFnIiBdOyB0aGVuCglpZiAhIGVj aG8gJGhhcmRfY2FwID4gL3Byb2MvJCQvdGFzay8kJC9jcHVfcmF0ZV9oYXJkX2NhcDsgdGhl bgoJCWVjaG8gIkVycm9yOiBzZXR0aW5nIGhhcmQgY2FwIG9mICRoYXJkX2NhcCIKCQlleGl0 IDMKCWZpCmZpCgppZiBbICEgLXogIiRuZmxhZyIgXTsgdGhlbgoJaWYgISByZW5pY2UgJG5p Y2UgJCQgPiAvZGV2L251bGw7IHRoZW4KCQllY2hvICJFcnJvcjogc2V0dGluZyBuaWNlIG9m ICRuaWNlIgoJCWV4aXQgMwoJZmkKZmkKCmV4ZWMgJCoK --------------050405030407020507070308--