From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-il1-x136.google.com (mail-il1-x136.google.com [IPv6:2607:f8b0:4864:20::136]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id CBC673B2A4 for ; Sat, 27 Mar 2021 17:45:38 -0400 (EDT) Received: by mail-il1-x136.google.com with SMTP id j11so8022833ilu.13 for ; Sat, 27 Mar 2021 14:45:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=tikR6W0vG6oVGuj+Jpz4NHeiFAgY9vtUkixVoTcMK6g=; b=VX5bxkSOgjKq3gqN3W2Z+owtWuwQakpO+sjNuxVvP/mNsmcKPFynnMEVkQDSx7EfEW IVNM15/xfSnDi+Ao3fiRBy1nN0PNN+0I1EAh3WpgHW9l9dU+dwfLGWVseTgd1Mdolmyj tP+XvjaLhzOikDHQIHfOXu2tNLwWQKDcFkf5cpkaKAaUChQ21ndf79iCNupqenGQZ6D4 YYCV/9dZ+vIYxXE8dLCebdwVF4g/hgKNoQ+OsmgcsgsVx0X1I975p2V95IvBVFLyc+Em VymuSZIRO3SpHngD1+gN1ga64BXvtJQoqQLHdszRJjOO7G5zC3WdpH5ohSYBgFW8ig4V u6nA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=tikR6W0vG6oVGuj+Jpz4NHeiFAgY9vtUkixVoTcMK6g=; b=PeGP0bi4Y1Q6qZtdXWQqXEZmkTIYtNnm6HdCqFEPiNe0wst+y9Uzg5VF0+MopWooKh lOPz4ezBDVNJ7pqxk1aEJ8m297jOT+N7iSYVM1QcPAf0BRAR7zsJNsBu/CH9sEwKyBMA JiqhHPydCh5J0eh0puSuoVGyYRBUuIE3LiVTzj5xjI4E8ijVHBt6fztHkdgNmY75EGAs e+Q/hY+BxP1XfYNfu6B5pJfZIyVyexku4aTx8DOB8+WxVtgQMfwU74CBy8VpxSbyZuG9 UfbthNlT8TpAIdXJhShV6+0Hq2xFtug96rg9uneOdxvbit0tbyERj1UViL/aoyvDEVGP gPFA== X-Gm-Message-State: AOAM531sE9DcbLT73nZXJ/l8oAj0zee9JHHxojtmDYrv9BnT0q64kLTr pJChgfYf8crvnE+FiN5E9+/2QvjErZM3wnaf1b+anrCY8GE= X-Google-Smtp-Source: ABdhPJxzLF+KlDejjk7JKinHvmSMY4KWf4rQGOZm+dhoNUOH5CEPK4b9GaPg6+udPNvyGeq4GdSiOHhcP5+PMrV6UKs= X-Received: by 2002:a05:6e02:eaf:: with SMTP id u15mr14652578ilj.45.1616881538422; Sat, 27 Mar 2021 14:45:38 -0700 (PDT) MIME-Version: 1.0 References: <87pmzla3vw.fsf@toke.dk> In-Reply-To: From: Dave Taht Date: Sat, 27 Mar 2021 14:45:27 -0700 Message-ID: To: "Klatsky, Carl" Cc: =?UTF-8?B?VG9rZSBIw7hpbGFuZC1Kw7hyZ2Vuc2Vu?= , bloat Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: Re: [Bloat] Netperf re-licensed as MIT X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 27 Mar 2021 21:45:38 -0000 most of the latency related portions of flent use irtt, which I think is a lot more solid than anything else. On Sat, Mar 27, 2021 at 2:44 PM Dave Taht wrote: > > so glad to hear the license has been fixed. > > carl, iperf is only used in a few of flent's tests. We trusted netperf > - as did the linux kernel developers - a lot further than all the > iperf variants combined - at the time we started work on flent. > > I would not mind us somehow developing a drop in replacement for > netperf, perhaps leveraging the irtt codebase, as I have a long > standing desire to be able to reliably measure latencies and the > output of TCP_INFO in "some" tool below 250us. > > iperf has come a long way, but getting to where I could trust the > largely "academic" codebase it was would take a ton of benchmarking. > > On Sat, Mar 27, 2021 at 2:09 PM Klatsky, Carl via Bloat > wrote: > > > > Toke, > > > > How you see this coming into Flent? My understanding is that for laten= cy & load test like RRUL: > > > > -iperf provides the bandwidth portion > > -IRTT provides the latency portion, and if IRTT is not found, the test = falls back to ICMP for the latency check > > > > Would netperf replace iperf for the bandwidth portion? Do you see it b= eing used for the latency portion? > > > > Thanks, > > Carl > > > > -----Original Message----- > > From: Bloat On Behalf Of Toke H= =C3=B8iland-J=C3=B8rgensen via Bloat > > Sent: Friday, March 26, 2021 7:32 PM > > To: bloat > > Subject: [Bloat] Netperf re-licensed as MIT > > > > Hopefully this means we can get it packaged for the distros that have t= hus far refused to because of the license - i.e., Debian and Fedora! > > > > -Toke > > _______________________________________________ > > Bloat mailing list > > Bloat@lists.bufferbloat.net > > https://urldefense.com/v3/__https://lists.bufferbloat.net/listinfo/bloa= t__;!!CQl3mcHX2A!W_yWwnGSD6VuZvpn0BPv7Ta9GBP3f2dRWeJHPLS7RrrpBZ5gpyj5DZGnRY= IfWVR5TXjR$ > > _______________________________________________ > > Bloat mailing list > > Bloat@lists.bufferbloat.net > > https://lists.bufferbloat.net/listinfo/bloat > > > > -- > "For a successful technology, reality must take precedence over public > relations, for Mother Nature cannot be fooled" - Richard Feynman > > dave@taht.net CTO, TekLibre, LLC Tel: 1-831-435-0729 --=20 "For a successful technology, reality must take precedence over public relations, for Mother Nature cannot be fooled" - Richard Feynman dave@taht.net CTO, TekLibre, LLC Tel: 1-831-435-0729