From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Koehrer Mathias (ETAS/ESW5)" Subject: Re: Kernel 4.6.7-rt13: Intel Ethernet driver igb causes huge latencies in cyclictest Date: Fri, 23 Sep 2016 11:40:46 +0000 Message-ID: References: <20160922151205.m3cch6re77tox3aw@linutronix.de> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Cc: "linux-rt-users@vger.kernel.org" To: "Koehrer Mathias (ETAS/ESW5)" , "Sebastian Andrzej Siewior" Return-path: Received: from smtp6-v.fe.bosch.de ([139.15.237.11]:17918 "EHLO smtp6-v.fe.bosch.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758771AbcIWLkv (ORCPT ); Fri, 23 Sep 2016 07:40:51 -0400 In-Reply-To: Content-Language: de-DE Sender: linux-rt-users-owner@vger.kernel.org List-ID: SGkgU2ViYXN0aWFuLA0KDQo+IHRoYW5rcyBmb3IgdGhlIGZlZWRiYWNrLg0KPiA+ID4gSSBydW4g dGhlIGN5Y2xpY3Rlc3Qgd2l0aCB0aGUgZm9sbG93aW5nIG9wdGlvbnM6DQo+ID4gPiAjIGN5Y2xp Y3Rlc3QgLWEgLWkgMTAwIC1kIDEwIC1tIC1uIC10IC1wIDgwDQo+ID4NCj4gPiB0aGVyZSBpcyAt Uy4gQW5kIHRoZW4gMTAwIG1pZ2h0IGJlIGEgbGl0dGxlIHRpZ2h0Lg0KPiA+DQo+ID4gPiBPZiBj b3Vyc2UgdGhlIDIgbWludXRlcyBydW4tdGltZSBvZiBjeWNsaWN0ZXN0IGlzIG9ubHkgYSByb3Vn aCBmaXJzdCBlc3RpbWF0ZS4NCj4gPg0KPiA+IGFuZCB3aXRoIG5vIGxvYWTigKYNCj4gPg0KPiA+ ID4gT25jZSBJIGNvbmZpZ3VyZSBvbmUgb2YgdGhlIGkzNTAgcG9ydHMgIyBpZmNvbmZpZyBldGgy IHVwDQo+ID4gPiAxOTIuMTY4LjEwMC4xMDAgdGhlIGN5Y2xpY3Rlc3Qgc2hvd3MgZGlyZWN0bHkg YW5kIHJlcHJvZHVjaWJseQ0KPiA+ID4gc2lnbmlmaWNhbnQgbGFyZ2VyIG1heCBsYXRlbmN5IHZh bHVlcyAoNDAgbWljcm9zZWNvbmRzLCB1c2luZyB0aGUNCj4gPiA+IHNhbWUNCj4gPiBjb25kaXRp b25zKS4NCj4gPiA+DQo+ID4gPg0KPiA+ID4gSSBkaWQgdGhlIHZlcnkgc2FtZSB0ZXN0IHdpdGgg a2VybmVsIHZlcnNpb24gMy4xOC4yNy1ydDI3Lg0KPiA+ID4gV2l0aCB0aGF0IHZlcnNpb24gSSBk aWQgbm90IHNlZSBhbnl0aGluZyBsaWtlIHRoYXQuDQo+ID4gPg0KPiA+ID4gQWxzbywgb25seSB0 aGUgaWdiIGRyaXZlciBzZWVtcyB0byBjYXVzZSB0aGUgdHJvdWJsZS4gSSBoYXZlIGFsc28gYW4N Cj4gPiA+IGUxMDAwZSBiYXNlZCBOSUMgaW4gdGhpcyBQQyBhbmQgdGhlIHVzYWdlIG9mIHRoaXMg ZHJpdmVyIGRvZXMgbm90DQo+ID4gPiBhZGQgYW55DQo+ID4gc2lnbmlmaWNhbnQgbGF0ZW5jeS4N Cj4gPiA+DQo+ID4gPiBBbnkgaWRlYSBvbiB0aGlzPw0KPiA+DQo+ID4gRG9lcyB0aGlzIGFsc28g aGFwcGVuIGlmIHlvdSBoYXZlIHRoZSBOSUMgdXAgYW5kIHlvdSBwbHVnIGluIC8gb3V0IHRoZQ0K PiA+IGNhYmxlPyBUaGVyZSBhcmUgdHdvIHRoaW5ncyB0aGF0IGNvbWUgdG8gbWluZDoNCj4gPiAg IGh0dHBzOi8vbGttbC5rZXJuZWwub3JnL3IvMTQ0NTQ2NTI2OC0xMDM0Ny0xLWdpdC1zZW5kLWVt YWlsLQ0KPiA+IGpvbmF0aGFuLmRhdmlkQG5pLmNvbQ0KPiA+DQo+ID4gaHR0cHM6Ly9sa21sLmtl cm5lbC5vcmcvci8xNDQ1ODg2ODk1LTM2OTItMS1naXQtc2VuZC1lbWFpbC1qb3NoY0BuaS5jbw0K PiA+IG0NCj4gDQo+IFRoaXMgaGFwcGVucyBldmVuIGlmIEkgaGF2ZSBkb25lICJpZmNvbmZpZyB1 cCIgb24gdGhlIE5JQyB3aXRob3V0IGhhdmluZyBhIGNhYmxlDQo+IHBsdWdnZWQgaW4uDQo+IEFs c28sIGl0IGhhcHBlbnMgaWYgSSBoYXZlIGEgY2FibGUgcGx1Z2dlZCBpbiBhbmQgdGhlIGxpbmsg aXMgdXAgYnV0IG5vIHRyYWZmaWMgaXMgcnVubmluZw0KPiB2aWEgdGhpcyBOSUMgcG9ydC4NCj4g SXQgbG9va3MgYXMgaWYgc29sZWx5IHRoZSBjb25maWd1cmVkIE5JQyBwb3J0IGlzIGNhdXNpbmcg dGhlIGFkZGl0aW9uYWwgbGF0ZW5jeSwgbm8NCj4gbWF0dGVyIGlmIHRyYWZmaWMgaXMgZmxvd2lu ZyB2aWEgdGhpcyBOSUMgb3Igbm90IGFuZCBubyBtYXR0ZXIgaWYgdGhlIGxpbmsgaXMgdXAgb3Ig bm90Lg0KPiANCj4gSSBkaWQgdGhlIHNhbWUgdGVzdCB3aXRoIHRoZSBrZXJuZWwvcnRfcHJlZW1w dCBwYXRjaCB2ZXJzaW9ucw0KPiA0LjEuMzMtcnQzNyBhbmQgNC40LjE5LXJ0MjcsIHRoZXkgc2hv dyB0aGUgdmVyeSBzYW1lIGJlaGF2aW9yLg0KPiBJbiBvcHBvc2l0ZSB0byB0aGF0LCB0aGUgdmVy c2lvbiAzLjE4LjI3LXJ0MjcgaXMgd29ya2luZyBzdGFibGUhDQo+IA0KPiBBcyBtZW50aW9uZWQg YmVmb3JlLCB0aGUgImlnYiIgZHJpdmVyIGlzIGNhdXNpbmcgdGhlIGlzc3VlLiBUaGUgImUxMDAw ZSIgZHJpdmVyIHdvcmtzDQo+IGZpbmUuDQo+IA0KSSBkaWQgc29tZSBmdXJ0aGVyIGFuYWx5c2lz Lg0KVGhlIGNvZGUgdGhhdCBpcyBjYXVzaW5nIHRoZSBsb25nIGxhdGVuY2llcyBzZWVtcyB0byBi ZSB0aGUgDQpmdW5jdGlvbiAiaWdiX3dhdGNoZG9nX3Rhc2siIHdpdGhpbiBpZ2JfbWFpbi5jIChM aW5lOiA0Mzg2KS4gDQpUaGlzIGZ1bmN0aW9uIHdpbGwgYmUgY2FsbGVkIHBlcmlvZGljYWxseS4N CldoZW4gSSBkbyBhIHJldHVybiBhdCB0aGUgYmVnaW5uaW5nIG9mIHRoaXMgZnVuY3Rpb24gdGhl IGFkZGl0aW9uYWwgbGF0ZW5jeSBpcyBub3Qgc2Vlbi4NCkluIHBhcnRpY3VsYXIgdGhhdCBmdW5j dGlvbiBjYWxscyAiaWdiX2hhc19saW5rIiB3aGljaCBzZWVtcyB0byBiZSBvbmUgY2FuZGlkYXRl IHRoYXQgaXMNCmNhdXNpbmcgYWRkaXRpb25hbCBsYXRlbmN5Lg0KRG8geW91IGhhdmUgYW55IGNs dWUgaG93IHRoaXMgY29kZSBjYW4gYmUgZXhlY3V0ZWQgcHJvcGVybHkgd2l0aG91dCBjYXVzaW5n IHRoZQ0KYWRkaXRpb25hbCBsYXRlbmNpZXM/DQoNClJlZ2FyZHMNCg0KTWF0aGlhcw0KDQo=