From owner-freebsd-net@freebsd.org Fri Oct 19 19:27:38 2018 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id BC777FD97F0 for ; Fri, 19 Oct 2018 19:27:38 +0000 (UTC) (envelope-from lev@FreeBSD.org) Received: from onlyone.not-for.work (onlyone.not-for.work [IPv6:2a01:4f8:201:6350::2]) by mx1.freebsd.org (Postfix) with ESMTP id 722C38A7CB for ; Fri, 19 Oct 2018 19:27:38 +0000 (UTC) (envelope-from lev@FreeBSD.org) Received: from [192.168.23.186] (unknown [89.113.128.32]) (Authenticated sender: lev@serebryakov.spb.ru) by onlyone.not-for.work (Postfix) with ESMTPSA id E98FC2E5 for ; Fri, 19 Oct 2018 22:27:36 +0300 (MSK) To: freebsd-net@freebsd.org Reply-To: lev@FreeBSD.org From: Lev Serebryakov Subject: What is best TCP throughput benchmarking tool? 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What is suitable traffic generator/receiver for me? I'm trying to use benchmarks/iperf3, but it consumes questionable amount of CPU in several cases and maybe benchmark becomes limited by user-side CPU consuming, which is bad. I've tried "benchmarks/netperf" — it hangs with non-default window size. I've tried "benchmarks/netperfmeter" — it doesn't work without SCTP in kernel. Please note, that I'm testing endpoint, not a router, so netmap-based packet generators & receivers is no use for me, unfortunately. -- // Lev Serebryakov