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[134.76.241.253]) by smtp.gmail.com with ESMTPSA id s12sm1232745wmj.42.2019.05.03.01.09.05 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 03 May 2019 01:09:05 -0700 (PDT) From: Sebastian Moeller Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.8\)) Message-Id: <219CDCB8-9691-4E6B-B999-1F9AA145FD08@gmail.com> Date: Fri, 3 May 2019 10:09:04 +0200 To: flent-users X-Mailer: Apple Mail (2.3445.104.8) X-Mailman-Approved-At: Fri, 03 May 2019 12:59:03 +0300 Subject: [Flent-users] Saturating test with configurable packet-size/MSS? X-BeenThere: flent-users@flent.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Flent discussion list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: flent-users-bounces@flent.org Sender: "Flent-users" X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - web6.sd.eurovps.com X-AntiAbuse: Original Domain - toke.dk X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - flent.org X-Get-Message-Sender-Via: web6.sd.eurovps.com: acl_c_authenticated_local_user: mailman/mailman X-Authenticated-Sender: web6.sd.eurovps.com: mailman@flent.org Dear all, Loganaden remined me of a pet project of mine, deducing the per-packet-overhead from non ATM/AAL5 carriers. Now, I believe I have an approach that might be worth exploring*, but that requires me to saturate my link with packets of different packet sizes. so I wonder is there an easy way inside flent to run a fully saturating TCP or UDP test (multiple flows required to saturate the link are fine) and have control over packetsize from within flent/the specific flent test? Best Regards Sebastian *) In theory it works but my current approach absolutely requires me to measure the maximum goodput to >= 99.8% correct, which is another challenge in itself ;) The catch is that on a given link both gross-rate and per-packet-overhead are unkown and goodput can only be estimated making the whole endeavor slightly tricky... _______________________________________________ Flent-users mailing list Flent-users@flent.org http://flent.org/mailman/listinfo/flent-users_flent.org