From owner-freebsd-questions@FreeBSD.ORG Sat Sep 28 06:50:32 2013 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 1CDFAB2B for ; Sat, 28 Sep 2013 06:50:32 +0000 (UTC) (envelope-from talayeh.asadi@gmail.com) Received: from mail-qc0-x235.google.com (mail-qc0-x235.google.com [IPv6:2607:f8b0:400d:c01::235]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id D6046299C for ; Sat, 28 Sep 2013 06:50:31 +0000 (UTC) Received: by mail-qc0-f181.google.com with SMTP id q4so2356077qcx.26 for ; Fri, 27 Sep 2013 23:50:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:from:date:message-id:subject:to:content-type; bh=Zj1En+nqV9nTChB/MErtCH/O/veFiBLGNRzo29kkEfQ=; b=lmRXmaubt0LUtofSYTK2VIHfErVmkAyjsLpvNKP89aTO4colORkHPJ0MolyTiN397F Zu17rLDthhj1HbNIQ+rSQKrxSDi8gnQVwqO+vefpRbJ4hB+pAOJmqRWPm2cda0JQ8gUC JLFnO663+8YkxN9WY/GaaNIQ9zQl/x5CHEGF//qRoAnZHA2fus2qCWPW16NUomdKP/ox DBSahN5mv4t5Mj8nYmVpGETSIuuEhoH1iiFwxOCTbrH92be5+b+YskQbPQF98SKkTqn4 PILDFOrjEKjqT/nK3933sJb3L+uZ4TvlqOjdycOr8oHUaAJkv+i9q5WExPtCqCs6NItp d62A== X-Received: by 10.49.0.234 with SMTP id 10mr14265608qeh.67.1380351030493; Fri, 27 Sep 2013 23:50:30 -0700 (PDT) MIME-Version: 1.0 Received: by 10.49.117.100 with HTTP; Fri, 27 Sep 2013 23:50:10 -0700 (PDT) From: Talayeh Asadi Date: Sat, 28 Sep 2013 10:20:10 +0330 Message-ID: Subject: Throughput test with iperf.. To: FreeBSD Questions Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.14 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 28 Sep 2013 06:50:32 -0000 hi everyone, this might be a bit off-topic but i am really confused and in need of your helps.. :( i need to understand what exactly iperf does while testing network throughput? i'm trying to run a throughput+frame loss test on a router using iperf, and i am really confused with the definitions given for throughput and packet-loss and iperf output.. as i have seen through my searches, throughput is the maximum transfer rate at which we have no packet loss, so i thought i have to rerun iperf for different transfer rate(in udp test), so i reach maximun rate while having no drops... but i have seen test videos in which they ran iperf once, with maximum bandwidth of the line, and just used the reported throughput and packet loss as the required result! what's on? does iperf calculate the throughput independent from packet-loss? and why is it reporting it named as bandwidth?? thank you all.. Kind regards, t.a.k