From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clark Williams Subject: Re: Measuring timer interrupt latency Date: Mon, 13 Apr 2009 09:14:05 -0500 Message-ID: <20090413091405.380e42f8@torg> References: <002901c9bc03$54aa23d0$3f52c70a@dlh.st.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: base64 Cc: "'rt-users'" To: Suresh Kumar SHUKLA Return-path: Received: from mx2.redhat.com ([66.187.237.31]:41349 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751944AbZDMOOQ (ORCPT ); Mon, 13 Apr 2009 10:14:16 -0400 In-Reply-To: <002901c9bc03$54aa23d0$3f52c70a@dlh.st.com> Sender: linux-rt-users-owner@vger.kernel.org List-ID: LS0tLS1CRUdJTiBQR1AgU0lHTkVEIE1FU1NBR0UtLS0tLQ0KSGFzaDogU0hBMQ0KDQpPbiBNb24s IDEzIEFwciAyMDA5IDEyOjE0OjQyICswNTMwDQpTdXJlc2ggS3VtYXIgU0hVS0xBIDxzdXJlc2gu c2h1a2xhQHN0LmNvbT4gd3JvdGU6DQoNCj4gSGksDQo+IA0KPiBJIHdhbnQgdG8gcHJvZmlsZSB0 aGUgaW1wcm92ZW1lbnRzIGluIGludGVycnVwdCBsYXRlbmN5IHdpdGggYW5kIHdpdGhvdXQgUlQN Cj4gcGF0Y2hlcy4NCj4gDQo+IFRoZSBhcHByb2FjaCBJIGhhdmUgaW4gbWluZCBpcyB0aGF0IHRp bWUgZ2FwIGJldHdlZW4gSVJRIGZpcmluZyBhbmQgSVJRDQo+IGhhbmRsZXIgcmVhZGluZyB2YWx1 ZSBvZiBjb3VudGVyIHdvdWxkIGJlIHN1ZmZpY2llbnQgdG8gcmV2ZWFsIHRoZSBpbnRlcnJ1cHQN Cj4gbGF0ZW5jeS4gVGhlc2UgdmFsdWVzIGNhbiBiZSBhbmFseXNlZCBmb3IgbWluL21heC9hdmcu DQo+IA0KPiBJcyB0aGVyZSBhbnkgdGVzdCBwcm9ncmFtIHdoaWNoIGNhcHR1cmVzIGludGVycnVw dCBsYXRlbmN5IChmb3IgeDg2KSA/IA0KPiBJIGNoZWNrZWQgcmVhbGZlZWwgYnV0IGl0IGlzIHVz ZXIgbW9kZSBwcm9ncmFtIGFuZCBhbSBub3Qgc3VyZSBvZiBpdHMNCj4gYWNjdXJhY3kuDQo+IA0K PiByZWdhcmRzLA0KPiBTdXJlc2gNCj4gDQoNCkhhdmUgeW91IHRyaWVkIGN5Y2xpY3Rlc3Q/IEl0 J3MgcGFydCBvZiB0aGUgcnQtdGVzdHMgcGFja2FnZSB0aGF0DQpUaG9tYXMgR2xlaXhuZXIgd3Jv dGUgYW5kIHRoYXQgSSBub3cgbWFpbnRhaW4uIA0KDQpZb3UgY2FuIHBpY2sgdXAgdGhlIGxhdGVz dCB0YXJiYWxsIGhlcmU6DQoNCmh0dHA6Ly93d3cua2VybmVsLm9yZy9wdWIvbGludXgvL2tlcm5l bC9wZW9wbGUvY2xya3dsbG1zL3J0LXRlc3RzL3J0LXRlc3RzLTAuMzUudGFyLmJ6Mg0KDQpUaGUg dGhpbmcgaXMsIEknbSBub3Qgc3VyZSBob3cgdXNlZnVsIG1lYXN1cmluZyB0aGUgaW50ZXJ2YWwg YmV0d2Vlbg0KaW50ZXJydXB0IGFuZCBJU1IuIEl0J3Mgc3VjaCBhIHNtYWxsIGNvbXBvbmVudCBv ZiB0aGUgdG90YWwgbGF0ZW5jeQ0KdmFsdWUgdGhhdCBpdCB1c3VhbGx5IGdldHMgbG9zdCBpbiB0 aGUgbm9pc2UuIEN5Y2xpY3Rlc3QgbWVhc3VyZXMgdGhlDQp0aW1lIGJldHdlZW4gYSB0aW1lciBm aXJlcyBhbmQgd2hlbiB0aGUgdXNlci1zcGFjZSBwcm9ncmFtIChjeWNsaWN0ZXN0KQ0KYWN0dWFs bHkgZ2V0cyB0byBydW4gYWZ0ZXIgYSBzbGVlcCwgd2hpY2ggaXMgdGhlIGVudGlyZSBsYXRlbmN5 IHZhbHVlLg0KV2hhdCB5b3UncmUgdGFsa2luZyBhYm91dCBtZWFzdXJpbmcgb24gUlQgaXMgYmFz aWNhbGx5IGEgbG9va3VwIGFuZA0Kc2NoZWR1bGUoKSBjYWxsLCBzaW5jZSBhbGwgaW50ZXJydXB0 cyBoYXZlIHRocmVhZGVkIGhhbmRsZXJzIG9uIFJULg0KDQpJZiB5b3UgYXJlIHdhbnRpbmcgdG8g ZGVjb21wb3NlIHRoZSBsYXRlbmN5IGludG8gaXQncyBjb21wb25lbnRzIG9uIFJULA0KSSB0aGlu ayB5b3UnZCBoYXZlOg0KDQoJMS4gSVNSIGxhdGVuY3kNCgkyLiBTY2hlZHVsZXIgbGF0ZW5jeSBm b3IgSVJRIHRocmVhZA0KCTMuIElSUSBoYW5kbGVyIHRpbWUNCgk0LiBTY2hlZHVsZXIgbGF0ZW5j eSBmb3IgdXNlci1zcGFjZSB0aHJlYWQNCg0KQ3ljbGljdGVzdCBtZWFzdXJlcyB0aGUgYWdncmVn YXRlIG9mIGFsbCB0aGVzZS4gDQoNCkNsYXJrDQotLS0tLUJFR0lOIFBHUCBTSUdOQVRVUkUtLS0t LQ0KVmVyc2lvbjogR251UEcgdjIuMC4xMCAoR05VL0xpbnV4KQ0KDQppRVlFQVJFQ0FBWUZBa25q U0xFQUNna1FIeXVqLytUVEVwMWt1QUNmU2kxM1dhUnQ2blpEYzUzTFhXcVNzYnNLDQpUdjBBb0pI cGVYQWpPa0NQdTV5Qk1FbE5ETXIzSWoweQ0KPTVMSWENCi0tLS0tRU5EIFBHUCBTSUdOQVRVUkUt LS0tLQ0K