From ihalfar@fit.vutbr.cz Sun Jul 10 04:36:13 2011 Return-Path: X-Original-To: tmrg@ietfa.amsl.com Delivered-To: tmrg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id BF57B21F85D8 for ; Sun, 10 Jul 2011 04:36:13 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.399 X-Spam-Level: X-Spam-Status: No, score=-1.399 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, J_CHICKENPOX_17=0.6, J_CHICKENPOX_47=0.6] Received: from mail.ietf.org ([64.170.98.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hcrCG2tjy4Gk for ; Sun, 10 Jul 2011 04:36:12 -0700 (PDT) Received: from kazi.fit.vutbr.cz (kazi6.fit.vutbr.cz [IPv6:2001:67c:1220:808::93e5:80c]) by ietfa.amsl.com (Postfix) with ESMTP id 0715721F85CF for ; Sun, 10 Jul 2011 04:36:08 -0700 (PDT) Received: from localhost (cst-prg-132-17.vodafone.cz [46.135.132.17]) (authenticated user=ihalfar mech=PLAIN bits=0) by kazi.fit.vutbr.cz (envelope-from ihalfar@fit.vutbr.cz) (8.14.5/8.14.4) with ESMTP id p6ABZO55001854 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sun, 10 Jul 2011 13:35:29 +0200 (CEST) Date: Sun, 10 Jul 2011 13:30:17 +0200 Message-ID: <5sf3xfrxuflxo25i6udjfdyh.1310297417642@email.android.com> From: Patrik Halfar To: "IRTF's transport modeling research group" MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: base64 X-Scanned-By: MIMEDefang 2.71 on 147.229.8.12 Subject: Re: [tmrg] TCP Evaluation Suite X-BeenThere: tmrg@irtf.org X-Mailman-Version: 2.1.12 Precedence: list Reply-To: IRTF's transport modeling research group List-Id: IRTF's transport modeling research group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 10 Jul 2011 11:36:13 -0000 ClNlbnQgZnJvbSBteSBTdHJlYWsKCk1pY2hhZWwgV2VsemwgPG1pY2hhd2VAaWZpLnVpby5ubz4g d3JvdGU6Cgo+SGkhCj4KPkkgdGhpbmsgaXQncyBncmVhdCB0byBzZWUgdGhhdCB0aGlzIGlzIGJl aW5nIHRha2VuIGFoZWFkIQo+Cj5TdGVmYW4gSGlyc2NobWFubiBoYXMgZG9uZSBhIG1hc3RlciB0 aGVzaXMgd2l0aCBtZSwgaW4gd2hpY2ggaGUgCj5pbnZlc3RpZ2F0ZWQgYSBkaWZmZXJlbnQgYXBw cm9hY2ggdG8gU2xvdyBTdGFydC4gQXMgYSBzdGFydGluZyBwb2ludCwgSSAKPnRvbGQgaGltIHRv IGxvb2sgYXQgdGhpcyB0ZXN0IHN1aXRlIGZvciBldmFsdWF0aW9ucyAtIGJ1dCwgCj51bnN1cnBy aXNpbmdseSwgd2UgZm91bmQgaXQgaW5hZGVxdWF0ZSBmb3IgdGhlIHR5cGVzIG9mIGFuYWx5c2Vz IG5lZWRlZCAKPnRvIGNvbXBhcmUgdmFyaWF0aW9ucyBvZiBTbG93IFN0YXJ0LiBIZSB0aGVyZWZv cmUgZXh0ZW5kZWQgaXQgdG8gY292ZXIgCj5zb21lIG5lY2Vzc2FyeSBzY2VuYXJpb3MgLSBhbGwg b2YgdGhpcyBjYW4gYmUgZm91bmQgaW4gaGlzIHRoZXNpczoKPmh0dHA6Ly9oZWltLmlmaS51aW8u bm8vfm1pY2hhd2UvdGVhY2hpbmcvZGlwbHMvaGlyc2NobWFubi5wZGYKPgo+VGhpcyBtYXkgb3Ig bWF5IG5vdCBoYXZlIHNvbWUgcmVsZXZhbmNlIGZvciB0aGUgdGVzdCBzdWl0ZS4uLiBJJ20gbm90 IAo+c3VnZ2VzdGluZyB0byBjaGFuZ2Ugb3IgZXh0ZW5kIHRoZSBzY29wZSBiZWNhdXNlIHRoaXMg d29yayBoYXMgYmVlbiAKPmdvaW5nIG9uIGZvciB0b28gbG9uZyBhbHJlYWR5IGFuZCBpdCB3b3Vs ZCBiZSBqdXN0IGdyZWF0IGlmIHNvbWVvbmUgCj5jb3VsZCBxdWlja2x5IGZpbmlzaCBpdCBub3cu IFN0aWxsLCB0aGVyZSBjb3VsZCBiZSBzb21lIHVzZWZ1bCAKPmluZm9ybWF0aW9uIGZvciB5b3Ug aW4gdGhpcyB0aGVzaXMsIHNvIEkgZmVsdCBsaWtlIHNoYXJpbmcgaXQuCj4KPkNoZWVycywKPk1p Y2hhZWwKPgo+UFM6IFNpbmNlIFN0ZWZhbiBhY3RpdmVseSB1c2VkIHRoZSB0ZXN0IHN1aXRlLCBo ZSBtYXkgYmUgYWJsZSB0byBnaXZlIAo+c29tZSBkaXJlY3QgYW5zd2VycyB0byB0aGUgcXVlc3Rp b25zIGJlbG93LiBJIHRoaW5rIGhlJ3Mgb24gdGhpcyBsaXN0Li4uCj4KPgo+T24gNi8yOC8xMSA5 OjA1IEFNLCBEYXZpZCB3cm90ZToKPj4gSGkgRXZlcnlvbmUsCj4+Cj4+IEkgaGF2ZSBiZWVuIHdv cmtpbmcgb24gYSByZXZpc2VkIHZlcnNpb24gb2YgdGhlIFRDUCB0ZXN0IHN1aXRlIChzZWUKPj4g aHR0cDovL3Rvb2xzLmlldGYub3JnL2h0bWwvZHJhZnQtaXJ0Zi10bXJnLXRlc3RzLTAyKSBhcyB3 ZWxsIGFzIGl0cyBucy0yCj4+IGltcGxlbWVudGF0aW9uLiBJbiB0aGUgcHJvY2VzcyB3ZSBoYXZl IGlkZW50aWZpZWQgYSBudW1iZXIgb2YgZGVzaWduIGRlY2lzaW9ucwo+PiB0byBiZSBtYWRlLiAg QmVsb3csIHdlIHByb3Bvc2Ugc29tZSBwb3NzaWJpbGl0aWVzLCBidXQgd291bGQgbGlrZSB0byBn ZXQKPj4gcmVzZWFyY2ggZ3JvdXAgY29uc2Vuc3VzIG9uIHRoZW0gYmVmb3JlIHJlbGVhc2luZyB0 aGUgbmV4dCBkcmFmdC4KPj4KPj4gU29tZSBvZiB0aGVzZSBwb3NzaWJpbGl0aWVzIGFyZSBiYXNl ZCBvbiBwcmFjdGljYWwgaXNzdWVzIHRvIGRvIHdpdGggdGhlCj4+IGltcGxlbWVudGF0aW9uIG9m IHRoZSBkcmFmdCBpbiBucy0yLiBUaGlzIGVtYWlsIGlzIG1lYW50IHRvIGJyaW5nIGV2ZXJ5b25l IHVwIHRvCj4+IGRhdGUgd2l0aCB0aGUgcHJvZ3Jlc3MsIGV4cGxhaW4gc29tZSBvZiB0aGUgcHJh Y3RpY2FsIGJhY2tncm91bmQsIGFuZCBvcGVuIHRoZQo+PiBmbG9vciBmb3IgY29tbWVudHMsIGNy aXRpY2lzbXMsIHN1Z2dlc3Rpb25zLCBldGMuIEkgZXNwZWNpYWxseSBlc3BlY2lhbGx5Cj4+IHNv bGljaXQgcmVzcG9uc2VzIHRvIHRoZSBxdWVzdGlvbnMgYmV0d2VlbiAiKioqIi4KPj4KPj4gU28g ZmFyLCBtb3N0IG9mIHRoZSB3b3JrIGhhcyBiZWVuIHdpdGggdGhlIGJhc2ljIGR1bWJiZWxsIHNj ZW5hcmlvcy4KPj4KPj4KPj4gTm90ZSB0aGVyZSBhcmUgc29tZSBhc2NpaSBkaWFncmFtcyB0aGF0 IHJlcXVpcmUgYSBmaXhlZCB3aXRoIGZvbnQgdG8gYmUgdmlld2VkCj4+IGNvcnJlY3RseS4KPj4K Pj4KPj4gMS4gVE1JWCBUUkFGRklDCj4+Cj4+IDEuMSBCYWNrZ3JvdW5kIG9uIHRoZSB0cmFmZmlj IHRyYWNlczoKPj4KPj4gVGhlIHRlc3Qgc3VpdGUgdXNlcyBUbWl4IHRvIHJlcGxheSB0cmFjZXMg b2YgVENQIGNvbm5lY3Rpb24gYXJyaXZhbHMgYW5kIHRoZWlyCj4+IHJlc3VsdGluZyBvcmlnaW4t ZGVzdGluYXRpb24gaW50ZXJhdGFjdGlvbnMsIGluY2x1ZGluZyB0aGUgYW1vdW50IG9mIGRhdGEg Zm9yCj4+IGVhY2ggaW50ZXJhY3Rpb24uIFRoZSBUbWl4IHRyYWZmaWMgdXNlZCBpbiB0aGUgc2Nl bmFyaW9zIGlzIG5vdCBzeW1tZXRyaWMgYW5kCj4+IG5vdCBzdGF0aW9uYXJ5Lgo+Pgo+PiBTb21l IGFuYWx5c2lzIG9mIHRoZSB0cmFmZmljIHdvdWxkIGJlIGdvb2QgdG8gaGF2ZSBhcyBwYXJ0IG9m IHRoZSBzdWl0ZSwgYW5kIGlzCj4+IGJlaW5nIGludmVzdGlnYXRlZC4KPj4KPj4KPj4gMS4yIEJh Y2tncm91bmQgY29uY2VybmluZyBzY2FsaW5nIHRoZSB0cmFmZmljLgo+Pgo+PiBUbyBhZGp1c3Qg dGhlIHRyYWZmaWMgbG9hZCBmb3IgdGhlIGdpdmVuIHNjZW5hcmlvcywgdGhlIGNvbm5lY3Rpb24g YXJyaXZhbCB0aW1lcwo+PiBhcmUgc2NhbGVkLgo+PiBDb25uZWN0aW9ucyBhcmUgc3RhcnRlZCBh dDoKPj4gCSAgICAgICAgICB0aW1lID0gc2NhbGUgKiBjb25uZWN0aW9uX3N0YXJ0X3RpbWUKPj4K Pj4gVGhlIHNtYWxsZXIgdGhlIHNjYWxlIHRoZSBoaWdoZXIgKGluIGdlbmVyYWwpIHRoZSB0cmFm ZmljLgo+Pgo+PiBOb3RlIHRoYXQgY2hhbmdpbmcgdGhlIGNvbm5lY3Rpb24gc3RhcnQgdGltZXMg YWxzbyBjaGFuZ2VzIHRoZSB3YXkgdGhlIHRyYWZmaWMKPj4gaW50ZXJhY3RzLCBwb3RlbnRpYWxs eSBjaGFuZ2luZyB0aGUgImNsdW1waW5nIiBvZiB0cmFmZmljIGJ1cnN0cy4KPj4KPj4KPj4gMS4z IFNpbXVsYXRpb24gc3RhcnQgdXAKPj4KPj4gQmFja2dyb3VuZDoKPj4KPj4gVG8gYWNjZWxlcmF0 ZSB0aGUgc3lzdGVtIHN0YXJ0IHVwLCB0aGUgc3lzdGVtIGlzICJwcmVmaWxsZWQiIHRvIGFwcHJv eGltYXRlIGEKPj4gInN0ZWFkeSBzdGF0ZSIgb2YgY29uZ2VzdGlvbi4gQWxsIGNvbm5lY3Rpb25z IHRoYXQgd291bGQgaGF2ZSBzdGFydGVkIGluIHRpbWU9MHMKPj4gdG8gdGltZT1wcmVmaWxsIGFy ZSBzdGFydGVkIG1vcmUgY2xvc2VseSB0b2dldGhlciBzcGFjZWQgb3ZlciBhIE1heFJUVCBwZXJp b2QKPj4gYmVmb3JlIHRpbWU9cHJlZmlsbC4gIFRoZSBpZGVhIGJlaGluZCB0aGlzIGlzIHRvIGxl c3NlbiB0aGUgdGltZSB0YWtlbiBiZWZvcmUKPj4gbWVhc3VyZW1lbnRzIGNhbiBiZSB0YWtlbi4g TWVhc3VyZW1lbnRzIGFyZSBiZWdpbiBhZnRlciB0aW1lPTIqcHJlZmlsbAo+Pgo+Pgo+PiBGaXhl ZCB3aXRoIGZvbnQgcmVxdWlyZWQuCj4+IGVnLgo+PiAgICAgICAgICAgICAgICAgICAgICAgPC0t LS0+Cj4+IAkJCU1heFJUVAo+PiB8LS0tLS0tLS0tLS0tLS0tLS0tLS18LS0tLXwtLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tfAo+PiB0PTAgICAgICAgICAgICAgICAgICAgICAgIHQ9cHJlZmlsbCAg ICAgICAgICAgICAgICAgdD0yKnByZWZpbGwKPj4gICAgICAgICAgICAgICAgICAgICAgIF4KPj4g ICAgICAgICAgICAgICAgICAgICAgIHwgc3RhcnQgY29ubmVjdGlvbnMgaGVyZS4KPj4KPj4KPj4K Pj4gKioqIERvZXMgYW55IG9uZSBmb3Jlc2VlIHByb2JsZW1zIHdpdGggYXR0ZW1wdGluZyB0byBy ZWR1Y2UgdGhlIG5lY2Vzc2FyeQo+PiAgICBzaW11bGF0aW9uIHdhcm11cCB0aW1lIHdpdGggdGhp cyBtZXRob2Q/ICoqKgo+Pgo+Pgo+PiAxLjQuIFBhY2tldCBzaXplcwo+Pgo+PiBUaGUgZHJhZnQg Y2FsbHMgZm9yIDEwJSA1MzZCIGFuZCA5MCUgMTUwMEIgVENQIHBhY2tldHMuIFRvIGFjaGlldmUg dGhpcywgd2UgaGF2ZQo+PiBhZGRlZCBhIG5ldyBNU1MgcmVjb3JkIGhhcyBiZWVuIGFkZGVkIHRv IHRoZSBUbWl4IHRyYWZmaWMgdmVjdG9yIGZpbGVzLCBhbmQgVG1peAo+PiBlbmhhbmNlZCB0byB1 c2UgaXQuIFRoZSBvcmlnaW5hbCB0cmFjZXMgaGF2ZSBiZWVuIHByb2Nlc3NlZCBzbyB0aGF0IHRo ZSBUQ1AgTVNTCj4+IGZvciBlYWNoIHRtaXggY29ubmVjdGlvbiBpcyBzZWxlY3RlZCByYW5kb21s eSAoaS5pLmQuKSB3aXRoIDEwJSA0OTZCIGFuZCA5MCUKPj4gMTQ2MEIuCj4+Cj4+IFJhdGlvbmFs ZTogVGhlIG1heGltdW0gc2VnbWVudCBzaXplIGlzIGdlbmVyYWxseSBjb25zdGFudCBmb3IgYW55 IHBhcnRpY3VsYXIKPj4gCSAgICAgIGNvbm5lY3Rpb24uCj4+Cj4+ICoqKiBJcyBpdCBlbm91Z2gg dG8gcmFuZG9tbHkgc2VsZWN0IHRoZSBNU1MgZm9yIGVhY2ggY29ubmVjdGlvbiBpbiB0aGUgdHJh Y2UKPj4gICAgICBmaWxlIHdpdGhvdXQgYmVpbmcgY29uY2VybmVkIGhvdyBtdWNoIHRyYWZmaWMg ZWFjaCBjb25uZWN0aW9uIGdlbmVyYXRlcz8KPj4gICAgICAqKioKPj4KPj4gMi4gU0NBTEUgU0VM RUNUSU9OIGFuZCBMT1NTIFRBUkdFVFMKPj4KPj4gVGhlIGNvbm5lY3Rpb24gYXJyaXZhbCB0aW1l cyBhcmUgc2NhbGVkIGZvciBlYWNoIHNjZW5hcmlvIHNvIGFzIHRvIGFjaGlldmUgYQo+PiBjZXJ0 YWluIGF2ZXJhZ2UgbG9zcyByYXRlIGF0IHRoZSBtb3N0IGNvbmdlc3RlZCBxdWV1ZSBvbiB0aGUg Y2VudHJhbCBsaW5rLiBUaGUKPj4gZHJhZnQgaW4gZ2VuZXJhbCBvbWl0dGVkIHRoZSB0YXJnZXQg bG9zcyByYXRlcywgYnV0IG5vdGVkIHRoYXQgbW9kZXJhdGUKPj4gY29uZ2VzdGlvbiBoYWQgYWJv dXQgYSAxLTIlIGxvc3MgcmF0ZSBmb3IgdGhlIGFjY2VzcyBsaW5rLgo+Pgo+PiBJbiB0aGVzZSBz Y2VuYXJpb3MgcGFja2V0IGxvc3MgaXMgbm90IHByaW1hcmlseSBjYXVzZWQgYnkgbG9uZyBsaXZl ZCBUQ1AKPj4gc2Vzc2lvbnMgaW4gY29uZ2VzdGlvbiBhdm9pZGFuY2UgbW9kZSBjeWNsaWNhbGx5 IGZpbGxpbmcgdGhlIGJ1ZmZlci4gSXQgaXMgb2Z0ZW4KPj4gY2F1c2VkIGJ5IHRoZSAiY29sbGlz aW9uIiBvZiBtdWx0aXBsZSBUQ1Agc2Vzc2lvbnMgc3RhcnRpbmcgdG9nZXRoZXIuCj4+Cj4+IEl0 IHdhcyBkaWZmaWN1bHQgdG8gYWNoaWV2ZSBhbnkgc3RhYmxlIHJlc3VsdHMgd2l0aCB0aGVzZSB0 YXJnZXRzIGZvciB0aGUKPj4gZGlhbC11cCBhbmQgZ2Vvc3RhdGlvbmFyeSBzYXRlbGxpdGUgY2Fz ZXMuIEJvdGggb2YgdGhlc2Ugc2NlbmFyaW9zIGV4cGVyaWVuY2UKPj4gdmVyeSBidXJzdHkgbG9z cywgd2l0aCB0aGUgZGlhbC11cCBzY2VuYXJpbyBieSBiZWluZyBieSBmYXIgdGhlIHdvcnN0LiBG b3IgdGhlc2UKPj4gc2NlbmFyaW9zIHdlIHByb3Bvc2U6Cj4+Cj4+IEdlb3N0YXRpb25hcnkgc2F0 ZWxsaXRlOiBNaWxkIGNvbmdlc3Rpb24gMiUsIE1vZGVyYXRlIGNvbmdlc3Rpb24gNiUgRGlhbC11 cCBsaW5rCj4+ICg2NGticHMpOiBNaWxkIGNvbmdlc3Rpb24gNSUsIE1vZGVyYXRlIGNvbmdlc3Rp b24gMTUlCj4+Cj4+IFdpcmVsZXNzIGxpbms6IHRvIGJlIHN0dWRpZWQuCj4+Cj4+IFRoZSBydWxl IG9mIHRodW1iIHdhcyBtb2RlcmF0ZSBjb25nZXN0aW9uIGlzIHRocmVlIHRpbWVzIHRoZSBsb3Nz IG9mIG1pbGQKPj4gY29uZ2VzdGlvbi4gRm9yIHRoZSBub24tY29uZ2VzdGVkIGxpbmsgdHJhZmZp YyB3ZSBwcm9wb3NlIGEgY29ubmVjdGlvbiBhcnJpdmFsCj4+IHJhdGUgb2YgaGFsZiB0aGF0IG9m IHRoZSBtaWxkLWNvbmdlc3Rpb24gc2NlbmFyaW8uCj4+Cj4+Cj4+ICoqKiBEbyB0aGVzZSB0YXJn ZXRzIHNlZW0gcmVhc29uYWJseSBwcmFjdGljYWw/IENvbW1lbnRzPyBTdWdnZXN0aW9ucz8gKioq Cj4+Cj4+IDMuIFNJTVVMQVRJT04gVElNRVMKPj4KPj4gVGhlIGRyYWZ0IHJlY29tbWVuZGVkIGF0 IGxlYXN0IDEwMHMuIFdlIGhhdmUgZm91bmQgdGhhdCB0aGlzIGlzIG5vdCBzdWZmaWNpZW50Cj4+ IGluIGFueSBidXQgdGhlIGRhdGEgY2VudGVyIGFuZCB0cmFuc29jZWFuaWMgc2NlbmFyaW9zLgo+ Pgo+PiBUaGUgc2ltdWxhdGlvbiB0aW1lcyBsaXN0ZWQgYmVsb3cgYXJlIHJvdWdoIG1pbmltYSB3 aGljaCBwcm92aWRlIGVub3VnaAo+PiBhdmVyYWdpbmcgZm9yIGEgcmVsaWFibGUgZGV0ZXJtaW5h dGlvbiBvZiB0aGUgY29ubmVjdGlvbiBhcnJpdmFsIHRpbWUgc2NhbGluZwo+PiBmb3IgdGhlIHRh cmdldCBsb3NzIHJhdGVzLiBGaW5hbCB2YWx1ZXMgcmVxdWlyZSBmdXJ0aGVyIHN0dWR5Lgo+Pgo+ PiBBcHByb3hpbWF0ZSBzaW11bGF0aW9uIHRpbWVzOgo+PiAgIC0gZGF0YSBjZW50ZXI6IH44NXMg KGluY2x1ZGluZyAzNXMgd2FybXVwKQo+PiAgIC0gdHJhbnNvY2VhbmljOiB+MTAwcyAoNDBzIHdh cm11cCkKPj4gICAtIGFjY2VzcyBsaW5rOiB+MzYwcyAoNjBzIHdhcm11cCkKPj4gICAtIGdlb3N0 YXRpb25hcnk6IH43NDBzICg0MHMgd2FybXVwKQo+PiAgIC0gZGlhbC11cDogfjUxMDBzICgxMDBz IHdhcm11cCkKPj4KPj4gTk9URVMKPj4gCTEuIFRoZSB0cmFmZmljIGlzIG5vdCBzdGF0aW9uYXJ5 Lgo+PiAJMi4gZGF0YSBjZW50ZXIgYW5kIHRyYW5zb2NlYW5pYyBsaW5rcyBoYXZlIHRob3VzYW5k cyBvZiBjb25jdXJyZW50Cj4+IAlUQ1Agc2Vzc2lvbnMgYW5kIHRha2UgYSBzaWduaWZpY2FudCBh bW91bnQgb2YgcmVhbCB0aW1lLgo+Pgo+Pgo+PiAqKiogSXMgZXZlcnlvbmUgaGFwcHkgd2l0aCBz aW11bGF0aW9uIHRpbWVzIHZhcnlpbmcgYWNjb3JkaW5nIHRvIHRoZSBzY2VuYXJpbz8KPj4gICAg ICBDb21tZW50cz8gU3VnZ2VzdGlvbnM/ICoqKgo+Pgo+Pgo+PiAzLiBCQVNJQyBEVU1CQkVMTCBT Q0VOQVJJT1M6Cj4+Cj4+IDMuMSBUb3BvbG9neToKPj4KPj4gVG9wb2xvZ2llcyBtYWlubHkgYXJl IGFzIGRlc2NyaWJlZCBpbiBkcmFmdCB3aXRoIGNoYW5nZXMgaGlnaGxpZ2h0ZWQgYmVsb3cuCj4+ Cj4+IDMuMS4xIERhdGEgQ2VudGVyIGFuZCBUcmFuc29jZWFuaWMKPj4KPj4gQ3VycmVudGx5IGEg Y2VudHJhbCBsaW5rIG9mIDFHYnBzIGlzIHRoZSBmYXN0ZXN0IHNwZWVkIHRoYXQgY2FuIGJlCj4+ IHByYWN0aWNhbGx5IHNpbXVsYXRlZCB3aXRoIG5zLTIuIFdlIHByb3Bvc2UgdGhhdCB0aGVzZSBl eHBlcmltZW50cyB1c2UgYQo+PiAxR2JwcyBjZW50cmFsIGxpbmsuCj4+Cj4+Cj4+ICoqKiBJcyB0 aGlzIHJlYXNvbmFibGU/IENvbW1lbnRzPyBTdWdnZXN0aW9ucz8gKioqCj4+Cj4+IDMuMS4yIEdl b3N0YXRpb25hcnkgc2F0ZWxsaXRlCj4+Cj4+Cj4+IFRoZSBkcmFmdCBwcm9wb3NlZCBhIHRvcG9s b2d5IHdpdGggYSA0ME1icHMgYmlkaXJlY3Rpb25hbCBjZW50cmFsIGxpbmsuIFRoZQo+PiBhY2Nl c3MgbGlua3Mgd2VyZSBhc3ltbWV0cmljIDQwLzQgTWJwcyBvbiBvbmUgc2lkZSBvZiB0aGUgY2Vu dHJhbCBsaW5rLCBhbmQKPj4gNC80ME1icHMgb24gdGhlIG90aGVyIHNpZGUgb2YgdGhlIGNlbnRy YWwgbGluay4KPj4KPj4gV2UgcHJvcG9zZSB0aGF0IHRoaXMgc2NlbmFyaW8gYmUgYWx0ZXJlZCB0 byBtb2RlbCBhIG5ldHdvcmsgY29ubmVjdGVkIHRvIGEKPj4gaHViLCBjb25uZWN0ZWQgdmlhIHNh dGVsbGl0ZSB0byB0aGUgYmFja2JvbmUgSW50ZXJuZXQuIFRoZSBjZW50cmFsIGxpbmsKPj4gbW9k ZWxzIHRoZSBhc3ltbWV0cmljIHNhdGVsbGl0ZSBjb25uZWN0aW9uLiBTZWUgYmVsb3c6Cj4+Cj4+ IEZpeGVkIHdpdGggZm9udCByZXF1aXJlZC4KPj4KPj4gICAgICAgICAgICAgTm9kZV8xICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBOb2RlXzQKPj4gICAgICAgICAgICAgICAg ICAgXCAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIC8KPj4gICAgICAgICAgICAg ICAgICAgIFwgICAgICAgICAgc2F0ZWxsaXRlIGxpbmsgICAgICAgICAgLwo+PiAgICAgICAgICAg IE5vZGVfMiAtLS0gUm91dGVyXzEgLS0tLS0tLS0tLS0tLS0gUm91dGVyXzIgLS0tIE5vZGVfNQo+ PiAgICAgICAgICAgICAgICAgICAgLyAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBc Cj4+ICAgICAgICAgICAgICAgICAgIC8gICAgICAgICAgNE1icHMtLS0+ICAgICAgICAgICAgICAg ICAgXAo+PiAgICAgICAgICAgICBOb2RlXzM8LS0tNDBNYnBzICAgICAgICAgICAgICBOb2RlXzYK Pj4KPj4KPj4gV2UgcHJvcG9zZSB0aGF0IHRoZSBkZWxheSBwYXJhbWV0ZXJzIGFyZSBhcyBpbiB0 aGUgZHJhZnQsIGFuZCB0aGF0IHRoZQo+PiBhY2Nlc3MgbGlua3MgYXJlIHNldCBhdCAxMDBNYnBz Lgo+Pgo+Pgo+PiBSYXRpb25hbGU6Cj4+IAkgICAxLiBPdXIgKGluZXhoYXVzdGl2ZSkgc2NhbiBv ZiBjdXJyZW50IGNvbW1lcmNpYWwgc2F0ZWxsaXRlIG9mZmVyaW5ncwo+PiAJICAgZGlkbid0IHNo b3cgY29tbW9uIHVzZSBvZiB0aGUgZHJhZnQgc2NlbmFyaW8uCj4+Cj4+IAkgICAyLiBUaGUgcHJv cG9zZWQgc2NlbmFyaW8gc2VlbWVkIG1vcmUgY29tbW9uIGluIHByYWN0aWNlICh0aG91Z2gKPj4g CSAgIHNvbWV0aW1lcyB0aGUgbGluayBpcyBtb3JlIGFzeW1tZXRyaWMgKGllIDFNYnBzIHVwIGFu ZCA0ME1icHMgZG93bikuCj4+Cj4+IAkgICAyLiBJdCBpcyBjb25zaXN0ZW50IHdpdGggdGhlIG90 aGVyIHdpcmVkIGR1bWJiZWxsIHNjZW5hcmlvcywgd2l0aAo+PiAJICAgY29uZ2VzdGlvbiBvbiB0 aGUgY2VudHJhbCBsaW5rLgo+Pgo+PiAJICAgNC4gSGF2aW5nIGNvbmdlc3Rpb24gb24gc29tZSBv ZiB0aGUgYWNjZXNzIGxpbmtzLCBlYWNoIG9mIHdoaWNoIGNhcnJ5Cj4+IAkgICBkaWZmZXJlbnQg dHJhZmZpYyBtYWtlcyBpdCBkaWZmaWN1bHQgdG8gZGV0ZXJtaW5lIHRoZSBhcHByb3ByaWF0ZQo+ PiAJICAgInNjYWxlIiBmYWN0b3IgZm9yIGNvbm5lY3Rpb24gYXJyaXZhbHMgdG8gYWNoaWV2ZSB0 aGUgdGFyZ2V0IGxldmVsIG9mCj4+IAkgICBjb25nZXN0aW9uLgo+Pgo+Pgo+PiAqKiogRG8geW91 IGFncmVlIHdpdGggdGhpcyBwcm9wb3NlZCBjaGFuZ2UgaW4gdG9wb2xvZ3k/IENhbiB5b3Ugc2Vl IHByb2JsZW1zCj4+ICAgICAgd2l0aCBpdD8gQ29tbWVudHM/IENoYW5nZXM/IEVuaGFuY2VtZW50 cz8gQ2F2ZWF0cz8gKioqCj4+Cj4+Cj4+IDMuMiBCdWZmZXIgc2l6ZXMKPj4KPj4gVGhlIGRyYWZ0 IHN1Z2dlc3RzIGEgYnVmZmVyIHNpemUgb2YgMTAwbXMuIFRoaXMgaXMgcm91Z2hseSB0aGUgbWVk aWFuIGJhc2UKPj4gUlRUIG9mIHBvc3NpYmxlIHBhdGhzIGZvciB0aGUgYWNjZXNzIGxpbmsgc2Nl bmFyaW8gKGFjdHVhbGx5IDEwMm1zKS4KPj4KPj4gVGhpcyBzaXplIGlzIHRvbyBiaWcgZm9yIHRo ZSBkYXRhIGNlbnRlciBzY2VuYXJpby4gIEl0IGlzIHZlcnkgaW1wcmFjdGljYWwgZm9yCj4+IHRo ZSBkaWFsLXVwIGxpbmsgKGxlc3MgdGhhbiAxIHBhY2tldCEpLgo+Pgo+PiBUbyBkZWFsIHdpdGgg dGhlc2UgaXNzdWVzLCB3aGlsZSBhdHRlbXB0aW5nIHRvIHByb3ZpZGUgYSBzdGFuZGFyZCB0eXBl IG9mCj4+IHRlc3QsIFdlIHByb3Bvc2UgdGhlIGZvbGxvd2luZyBidWZmZXIgc2l6ZXM6Cj4+Cj4+ ICAgICAgICAxLiBBY2Nlc3MtbGluaywgZGF0YS1jZW50ZXIsIHRyYW5zLW9jZWFuaWMsIGFuZCBn ZW9zdGF0aW9uYXJ5IHNjZW5hcmlvCj4+ICAgICAgICBjZW50cmFsIGxpbmsgYnVmZmVycyBhcmUg c2V0IHRvIHRoZSBtZWRpYW4gYmFzZSBSVFQuIFRoaXMgcmVzdWx0cyBpbgo+PiAgICAgICAgYnVm ZmVyIHNpemVzIG9mIDEwMm1zLCAyMm1zLCAyMzJtcywgYW5kIDcwMm1zIHJlc3BlY3RpdmVseSAo dGhlc2UgYmVpbmcKPj4gICAgICAgIGNvbnZlcnRlZCB0byB0aGUgaW50ZWdlciBudW1iZXIgb2Yg MTUwMEIgcGFja2V0cyB0aGF0IGFjaGlldmUgdGhpcywKPj4gICAgICAgIHJvdW5kZWQgZG93biku Cj4+Cj4+ICAgICAgICAyLiBUaGUgZGlhbC11cCBsaW5rIGhhdmUgaXRzIGNlbnRyYWwgbGluayBi dWZmZXJzIHNldCBhdCA2IHBhY2tldHMuIFRoaXMKPj4gICAgICAgIGFsbG93cyBmb3IgMyBjb25j dXJyZW50IDIgcGFja2V0IGJ1cnN0cy4KPj4KPj4gICAgICAgIDMuIFRoZSB3aXJlbGVzcyBzY2Vu YXJpbyBpcyBzdGlsbCBiZWluZyBpbnZlc3RpZ2F0ZWQuCj4+Cj4+Cj4+Cj4+ICoqKiBEbyB0aGVz ZSBwcm9wb3NlZCBidWZmZXIgc2l6ZXMgc2VlbSByZWFzb25hYmxlPyBDb21tZW50cz8gU3VnZ2Vz dGlvbnM/Cj4+ICAgICAgT3RoZXIgcHJvcG9zYWxzPyAqKioKPj4KPj4KPj4KPgo+X19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KPnRtcmcgbWFpbGluZyBsaXN0 Cj50bXJnQGlydGYub3JnCj5odHRwczovL3d3dy5pcnRmLm9yZy9tYWlsbWFuL2xpc3RpbmZvL3Rt cmcK From michawe@ifi.uio.no Thu Jul 14 02:17:26 2011 Return-Path: X-Original-To: tmrg@ietfa.amsl.com Delivered-To: tmrg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A734B21F8AE1 for ; Thu, 14 Jul 2011 02:17:26 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -101.999 X-Spam-Level: X-Spam-Status: No, score=-101.999 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, J_CHICKENPOX_43=0.6, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 0ubYPjjZXQh9 for ; Thu, 14 Jul 2011 02:17:23 -0700 (PDT) Received: from mail-out2.uio.no (mail-out2.uio.no [IPv6:2001:700:100:10::58]) by ietfa.amsl.com (Postfix) with ESMTP id 27A0121F8AEA for ; Thu, 14 Jul 2011 02:17:19 -0700 (PDT) Received: from mail-mx4.uio.no ([129.240.10.45]) by mail-out2.uio.no with esmtp (Exim 4.75) (envelope-from ) id 1QhI2n-0006j7-FF for tmrg@irtf.org; Thu, 14 Jul 2011 11:17:17 +0200 Received: from 1x-193-157-199-2.uio.no ([193.157.199.2]) by mail-mx4.uio.no with esmtpsa (TLSv1:AES128-SHA:128) user michawe (Exim 4.76) (envelope-from ) id 1QhI2m-0001Q6-Qr for tmrg@irtf.org; Thu, 14 Jul 2011 11:17:17 +0200 Message-Id: <3422D48B-0F2C-4059-BE3A-717D08DED3CF@ifi.uio.no> From: Michael Welzl To: tmrg@irtf.org Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v936) Date: Thu, 14 Jul 2011 11:17:16 +0200 References: <34351D14-848F-4C9D-879C-58B8A0EE8FE1@ifi.uio.no> X-Mailer: Apple Mail (2.936) X-UiO-Ratelimit-Test: rcpts/h 2 msgs/h 2 sum rcpts/h 3 sum msgs/h 3 total rcpts 10859 max rcpts/h 36 ratelimit 0 X-UiO-Spam-info: not spam, SpamAssassin (score=-5.0, required=5.0, autolearn=disabled, T_RP_MATCHES_RCVD=-0.01, UIO_MAIL_IS_INTERNAL=-5, uiobl=NO, uiouri=NO) X-UiO-Scanned: 7099739ABF209C9539B0FD406504A8781A32811C X-UiO-SPAM-Test: remote_host: 193.157.199.2 spam_score: -49 maxlevel 80 minaction 2 bait 0 mail/h: 2 total 61 max/h 5 blacklist 0 greylist 0 ratelimit 0 Subject: [tmrg] Fwd: An aggression metric? X-BeenThere: tmrg@irtf.org X-Mailman-Version: 2.1.12 Precedence: list Reply-To: IRTF's transport modeling research group List-Id: IRTF's transport modeling research group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Jul 2011 09:17:26 -0000 Hi TMRGers, I sent this message to ICCRG, but I think it should be of interest to TMRG'ers too, so here I'm forwarding it. Please carry out discussion on the ICCRG list, though. Cheers, Michael Begin forwarded message: > From: Michael Welzl > Date: July 14, 2011 11:15:19 AM GMT+02:00 > To: "iccrg@cs.ucl.ac.uk list" > Subject: An aggression metric? > > Hi! > > Here's an idea. Our group's charter says: "The key goal of the > Internet Congestion Control Research Group (ICCRG) therefore is to > move towards consensus on which technologies are viable long-term > solutions for the Internet congestion control architecture, and what > an appropriate cost/benefit tradeoff is." > > For a "viable long-term solution", I think that the "aggression" of > a congestion control mechanism is important, but most evaluations > focus on its efficiency in terms of bandwidth utilization, fairness > among flows of their own kind, etc. By aggression, I mean: > - what happens when it fights against a standard TCP? > - what happens when it fights against its competitors, e.g. (insert > your favorite mechanism here)? > It's not uncommon to have a diagram that shows one of these things > in papers too, but what would really be good, I think, would be to > have a unified way of looking at it - an aggression metric. > Something that lets me conclude that, e.g., CUBIC is 7-aggressive, > HTCP is also 7-aggressive (of course these two are surely equal! he > he :) ), FAST is 3-aggressive, Westwood is 12-aggressive, whatever! > Something like that. > > Standard TCP could be the base unit (the number 1) here. We recently > finished a paper in which we present an extension of the TCP steady- > state throughput equation for multiple flows - i.e. from the packet > size, loss event rate, RTT, and now also the number of flows (N) and > the actual packet loss ratio, one can calculate the rate at which N > flows would send. This is the paper: > > Dragana Damjanovic, Michael Welzl: "An Extension of the TCP Steady- > State Throughput Equation for Parallel Flows and its Application in > MulTFRC", accepted for publication in IEEE/ACM Transactions on > Networking, 2011. > http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5756471&tag=1 > > The equation is also included in our MulTFRC draft: > http://tools.ietf.org/html/draft-irtf-iccrg-multfrc-01 > (btw, we're just about to finish an update of this document, stay > tuned) > > It wouldn't be hard to turn this equation around such that, from the > packet size, loss event rate, RTT, packet loss ratio and sending > rate, one could calculate how many standard TCP's (N) must have > produced (or would be represented by) this rate. This would also > work with floats, e.g. a calculation could yield N=3.52 or something > like that. Thus, one could carry out a "benchmark test" simulation > of a high-speed mechanism where it's confronted with different loss > and RTT conditions, and from its resulting rate, one could then say > that it's between X and Y-aggressive, i.e. representing between X > and Y TCPs. > > Would that be a useful "aggression" metric? > > e.g. an alternative could be to produce a simpler equation which is > not so much based on all the specifics of TCP (slow start etc), > maybe just use N * MSS/RTT * (1/sqrt(p)), see where a modern TCP > with slow start stands in relation to that, and where high-speed > mechanisms stand in relation to that. Or should use an even simpler > equation? > > Do we even need or want such a metric? > > Cheers, > Michael >