From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clark Williams Subject: Re: Seeing 800us of latency with cyclictest on a PC with 2.6.26.8 rt patch. Is that normal? Date: Thu, 12 Mar 2009 07:24:19 -0500 Message-ID: <20090312072419.3c4447b1@redhat.com> References: <14400.1236703161@vtxmail.ch> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: base64 Cc: linux-rt-users@vger.kernel.org, Jon Masters To: Brian Hutchinson Return-path: Received: from mx2.redhat.com ([66.187.237.31]:36518 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752632AbZCLMYg (ORCPT ); Thu, 12 Mar 2009 08:24:36 -0400 In-Reply-To: Sender: linux-rt-users-owner@vger.kernel.org List-ID: LS0tLS1CRUdJTiBQR1AgU0lHTkVEIE1FU1NBR0UtLS0tLQ0KSGFzaDogU0hBMQ0KDQpPbiBXZWQs IDExIE1hciAyMDA5IDE5OjMxOjAxICswMDAwIChVVEMpDQpCcmlhbiBIdXRjaGluc29uIDxiLmh1 dGNobWFuQGdtYWlsLmNvbT4gd3JvdGU6DQo+IA0KPiBUaGFua3MgdG8gZXZlcnlvbmUgZm9yIGFs bCB0aGUgc3VnZ2VzdGlvbnMuICBJIHdvdWxkbid0IGhhdmUgdGhvdWdodCB0aGF0IDEwDQo+IHll YXIgb2xkIGRlc2t0b3AgaGFyZHdhcmUgY291bGQgYmVhdCB0aGUgcGFudHMgb2ZmIGEgbW9kZXJu IGxhcHRvcC4NCj4gDQo+DQoNCkFsbW9zdCBjZXJ0YWlubHkgaXQncyBiZWNhdXNlIHlvdXIgb2xk IGRlc2t0b3AgZG9lc24ndCBoYXZlIGxvdHMgb2YNCnRoaW5ncyBnb2luZyBvbiBiZWhpbmQtdGhl LXNjZW5lcyBpbiB0aGUgQklPUy4gTW9kZXJuIHg4Ni94ODZfNjQgaC93DQp2ZW5kb3JzIGhhdmUg YWRkZWQgbG90cyBvZiBvdXRzaWRlIHRoZSBPUyBmdW5jdGlvbnMgc3VjaCBhcyB0aGVybWFsDQpt b25pdG9yaW5nIGFuZCBzcGVjaWFsIGZ1bmN0aW9uIGtleXMgKGFsYSB0aGUgVGhpbmtsaWdodCBv biBtb3N0DQpUaGlua3BhZHMpIHRoYXQgYXJlIGhhbmRsZWQgdmlhIFN5c3RlbSBNYW5hZ2VtZW50 IEludGVycnVwdHMgKFNNSSkNCmRpcmVjdGx5IGJ5IHRoZSBCSU9TLiBJZiB0aGUgU01JIHNlcnZp Y2Ugcm91dGluZXMgdGFrZSBsb25nIHRpbWVzIHRvIGRvDQp3aGF0ZXZlciB0aGV5J3JlIGRvaW5n LCB5b3UgZ2V0IHVuZXhwbGFpbmVkIGxhdGVuY2llcy4gDQoNCkpvbiBNYXN0ZXJzIHdyb3RlIGFu IFNNSSBkZXRlY3RvciBtb2R1bGUgdGhhdCB3ZSd2ZSBiZWVuIHVzaW5nIHRvIGdvb2QNCmVmZmVj dCB0byBkZXRlY3QgYW5kIGNsYXNzaWZ5IFNNSXMgKC9tZSBydW1tYWdlcyBmb3IgTEtNTCBsaW5r KS4NCkFjdHVhbGx5LCBJIHRoaW5rIHdlJ3ZlIGFkZGVkIHNvbWUgc3R1ZmYgc2luY2UgaGUgcG9z dGVkIGl0IGxhc3QsIHNvDQpJJ2xsIHBva2UgaGltIHRvIHBvc3QgaXQgYWdhaW4uIEl0J3MgYSBz cGVjaWFsIHB1cnBvc2UgbW9kdWxlIHRoYXQgcnVucw0KYSBmdW5jdGlvbiBpbiB0aGUgc3RvcF9t YWNoaW5lKCkgbW9kZS4gVGhlIGZ1bmN0aW9uIGp1c3QgcG9sbHMgdGhlIFRTQw0KbG9va2luZyBm b3IgZ2FwcyB0aGF0IGV4Y2VlZCBhIGNlcnRhaW4gdGhyZXNob2xkLiBBbnkgZ2FwIGluIHRoZSBU U0MNCnZhbHVlcyBvbiBhIHBhcnRpY3VsYXIgY29yZSBhcmUgdmVyeSBnb29kIGNhbmRpZGF0ZXMg Zm9yIFNNSXMuDQoNCkNsYXJrDQotLS0tLUJFR0lOIFBHUCBTSUdOQVRVUkUtLS0tLQ0KVmVyc2lv bjogR251UEcgdjIuMC45IChHTlUvTGludXgpDQoNCmlFWUVBUkVDQUFZRkFrbTQvdm9BQ2drUUh5 dWovK1RURXAxL3h3Q2d3Z1k1TXByTnlRNlp0MVdUTXZmTlAwc1cNCmp3TUFvS1RxK2FpanFabE5B NE16TjJ2S2wvUUZmOGhEDQo9YXNnSg0KLS0tLS1FTkQgUEdQIFNJR05BVFVSRS0tLS0tDQo=