From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clark Williams Subject: Re: Measuring timer interrupt latency Date: Wed, 15 Apr 2009 10:46:51 -0500 Message-ID: <20090415104651.701ac397@torg> References: <002901c9bc03$54aa23d0$3f52c70a@dlh.st.com> <20090413091405.380e42f8@torg> <200904131822.02125.tstone@vlsi.informatik.tu-darmstadt.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: base64 Cc: "'rt-users'" To: Tim Sander Return-path: Received: from mx2.redhat.com ([66.187.237.31]:49955 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751284AbZDOPrB (ORCPT ); Wed, 15 Apr 2009 11:47:01 -0400 In-Reply-To: <200904131822.02125.tstone@vlsi.informatik.tu-darmstadt.de> Sender: linux-rt-users-owner@vger.kernel.org List-ID: LS0tLS1CRUdJTiBQR1AgU0lHTkVEIE1FU1NBR0UtLS0tLQ0KSGFzaDogU0hBMQ0KDQpPbiBNb24s IDEzIEFwciAyMDA5IDE4OjIyOjAxICswMjAwDQpUaW0gU2FuZGVyIDx0c3RvbmVAdmxzaS5pbmZv cm1hdGlrLnR1LWRhcm1zdGFkdC5kZT4gd3JvdGU6DQoNCj4gSGkNCj4gPiBIYXZlIHlvdSB0cmll ZCBjeWNsaWN0ZXN0PyBJdCdzIHBhcnQgb2YgdGhlIHJ0LXRlc3RzIHBhY2thZ2UgdGhhdA0KPiA+ IFRob21hcyBHbGVpeG5lciB3cm90ZSBhbmQgdGhhdCBJIG5vdyBtYWludGFpbi4NCj4gSSB0aGlu ayBjeWNsaWN0ZXN0IGlzIG5pY2UgdG8gZ2V0IHNvbWUgZmlyc3QgaW1wcmVzc2lvbnMgYW5kIGkg cmVhbGx5IGxpa2UgDQo+IGl0Li4uIGJ1dCBpdCBvbmx5IGdpdmUgdGhlIGFnZ3JlZ2F0ZS4NCg0K V2VsbCwgSSB0aGluayBpdCdzIG1vcmUgdXNlZnVsIHRoYW4gZmlyc3QgaW1wcmVzc2lvbnMsIGJ1 dCBJJ20gYmlhc2VkIDopDQoNCj4gDQo+ID4gVGhlIHRoaW5nIGlzLCBJJ20gbm90IHN1cmUgaG93 IHVzZWZ1bCBtZWFzdXJpbmcgdGhlIGludGVydmFsIGJldHdlZW4NCj4gPiBpbnRlcnJ1cHQgYW5k IElTUi4gSXQncyBzdWNoIGEgc21hbGwgY29tcG9uZW50IG9mIHRoZSB0b3RhbCBsYXRlbmN5DQo+ ID4gdmFsdWUgdGhhdCBpdCB1c3VhbGx5IGdldHMgbG9zdCBpbiB0aGUgbm9pc2UuIA0KPiBJIGRv bid0IHRoaW5rIHRoYXQgeW91IGNhbiBuZWdsZWN0IHRoZXNlIG51bWJlcnMgaW4gYSBoYXJkIHJ0 IGVudmlyb25tZW50Lg0KPiBBcyBmYXIgYXMgaSB1bmRlcnN0YW5kLCB0aGUgaXJxLXRhc2tsZXQg aGFzIHRvIGJlIHNjaGVkdWxlZCBieSB0aGUga2VybmVsLg0KDQpXaGF0IEkgbWVhbiBpcyB0aGF0 IHRoZSBsYXRlbmN5IGZyb20gaW50ZXJycnVwdCBzaWduYWwgdG8gc3lzdGVtIElTUiBpcw0Kc28g c21hbGwgdGhhdCB5b3UnZCBiZSBiZXR0ZXIgb2ZmIHRyeWluZyB0byByZWR1Y2Ugc29tZSBvZiB0 aGUgb3RoZXINCmNvbXBvbmVudHMgdG8gdHJ5IGFuZCByZWR1Y2UgdG90YWwgbGF0ZW5jeS4gDQoN Ck9mIGNvdXJzZSBJIGRvbid0IGhhdmUgYW55IGhhcmQgbnVtYmVycyBvbiBob3cgc21hbGwgdGhl IElTUiBsYXRlbmN5IGlzDQpjb21wYXJlZCB0byBzY2hlZHVsaW5nIHRoZSBJUlEgdGhyZWFkIGFu ZCBzY2hlZHVsaW5nIHRoZSB1c2VyLXRocmVhZA0KdGhhdCB3YXMgd2FpdGluZyBmb3IgdGhlIGlu dGVycnVwdCBldmVudC4gIEkgd29uZGVyIGlmIHRoZXJlIGFyZSBhbnkNCm1hcmtlcnMgYWxyZWFk eSBpbiB0aGUgUlQga2VybmVsIHRoYXQgd291bGQgbGV0IHVzIG1lYXN1cmUgdGhvc2UNCmNvbXBv bmVudHM/IFRoYXQgd2F5IHdlIGNvdWxkIGFyZ3VlIGNvbmNyZXRlIG51bWJlcnMgcmF0aGVyIHRo YW4ganVzdA0KYWJzdHJhY3QgaWRlYXMuDQoNCkknbGwgYXNrIHJvc3RlZHQuLi4NCg0KDQo+ID4g SWYgeW91IGFyZSB3YW50aW5nIHRvIGRlY29tcG9zZSB0aGUgbGF0ZW5jeSBpbnRvIGl0J3MgY29t cG9uZW50cyBvbiBSVCwNCj4gPiBJIHRoaW5rIHlvdSdkIGhhdmU6DQo+ID4gCTEuIElTUiBsYXRl bmN5DQo+ID4gCTIuIFNjaGVkdWxlciBsYXRlbmN5IGZvciBJUlEgdGhyZWFkDQo+ID4gCTMuIElS USBoYW5kbGVyIHRpbWUNCj4gPiAJNC4gU2NoZWR1bGVyIGxhdGVuY3kgZm9yIHVzZXItc3BhY2Ug dGhyZWFkDQo+ID4gQ3ljbGljdGVzdCBtZWFzdXJlcyB0aGUgYWdncmVnYXRlIG9mIGFsbCB0aGVz ZS4NCg0KPiBPbmUgZ29vZCBhcHJvYWNoIHRvIG1pbmltaXplIHVzZXIgbW9kZSBsYXRlbmN5IGFy ZSBwcm9iYWJseSB1c2VyIG1vZGUgZHJpdmVycy4gDQo+IFRoaXMgYXBwcm9hY2ggaGFzIGJlZW4g cHJlc2VudGVkIGF0IHRoZSBFbWJlZGRlZCBpbiBO/HJuYmVyZyB0aGlzIHllYXIgYnkgDQo+IGxp bnV0cm9uaXguIFNvIHlvdSBjYW4gc2hhdmUgb2ZmICMyIG9mIHRoZSBhYm92ZSBsaXN0LiBXaGlj aCBtZWFucyBvbmx5IG9uZSANCj4gcmVzY2hlZHVsaW5nIHJ1bnMgaW5zdGVhZCBvZiB0d28uIFVz ZXJtb2RlIGhhcyBvZiBjb3Vyc2UgdG8gYmUgcnVuIHdpdGggcnQgDQo+IHByaW9yaXR5Lg0KPiAN Cg0KWWVhaCwgYnV0IHlvdSdyZSBsaW1pdGVkIHRvIHBvbGxpbmcgdGhlIGgvdyBhdCB0aGF0IHBv aW50LiBHb29kIGlmIHlvdQ0KaGF2ZSBhIHNwYXJlIGNvcmUgYW5kIGEgaGlnaCBkYXRhIHJhdGUs IGJhZCBpZiB5b3UncmUgY3B1LWxpbWl0ZWQgYW5kDQpoYXZlIGEgc3BvcmFkaWMgZGF0YSByYXRl LiANCg0KQ2xhcmsNCi0tLS0tQkVHSU4gUEdQIFNJR05BVFVSRS0tLS0tDQpWZXJzaW9uOiBHbnVQ RyB2Mi4wLjEwIChHTlUvTGludXgpDQoNCmlFWUVBUkVDQUFZRkFrbm1BVzhBQ2drUUh5dWovK1RU RXAwOERBQ2ZZQURuRkwxQlNEZmdFcjN0WmpTOHFGR1UNCnVkTUFvS3FwMmJSTzZGL3RaT09EbUVZ Q3prazBMREZkDQo9MU8yTA0KLS0tLS1FTkQgUEdQIFNJR05BVFVSRS0tLS0tDQo=