From owner-freebsd-fs@freebsd.org Thu Apr 5 16:29:06 2018 Return-Path: Delivered-To: freebsd-fs@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 BA2C5F914A0 for ; Thu, 5 Apr 2018 16:29:06 +0000 (UTC) (envelope-from ben.rubson@gmail.com) Received: from mail-wr0-x232.google.com (mail-wr0-x232.google.com [IPv6:2a00:1450:400c:c0c::232]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 3618284ADF for ; Thu, 5 Apr 2018 16:29:05 +0000 (UTC) (envelope-from ben.rubson@gmail.com) Received: by mail-wr0-x232.google.com with SMTP id s18so29395769wrg.9 for ; Thu, 05 Apr 2018 09:29:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:subject:from:in-reply-to:date :content-transfer-encoding:message-id:references:to; bh=TFcj1prExwCR/WuaszYmdllnie3vCmyNt6Aq9xos/TM=; b=Zlq2aEro3tWLfdgxs0NsM67G9MkOlHfJu384feDJ0UpgSxrhqk6qtmxp2JBXOxdd+k mmfcUrC43fPUnTKQ5lj2h/ptoCWJIgckLdz6+RViBEBpNK/ZpTV4fDG4A58b4/lu1BJq o5BKn4FkSPudK0gWZAFE34ijBz8sCuuzGKiKxiX5IemU6MBJlkIXJcqWMbcWuQ8JUKfT 8G8R8J/04Y1sPZL9U0T+Nwit7ZsyFo4o7nVY1PlLs6rzMZMqJ4OBCbq7BqM3koglYKU1 CL4USFB4S/JJyTK2h0vBkjI4Kz717MiesrlnE474snOdFb6K4tIW81fSeJoR9j+/7Hmt obCg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date :content-transfer-encoding:message-id:references:to; bh=TFcj1prExwCR/WuaszYmdllnie3vCmyNt6Aq9xos/TM=; b=jHIEQr4JOLVPhEU73GINs5VyYeAo/vQ0OL0KKYN6W3jHFvGZkOVvZsiYZecLlKl/fa EMS07tXHj6puC+HxPhsPoeZleJciHYnPUKt8/klQQUbtMpiZZ60xDOkxO6j1z3COTj6B p4pwRrkaf45pZr+c3w2SSqAYlaI2iGlEaOYRm1reJZGgaxiePd0tmo+sg7nMxVPnlqcm ktW+ovy5ZPCvDoYWbomha4hrJpmucSXlZvJMrzATolYZYHN3oFFslXB7d67RPivPClHl JvFDUAKvcUairdwHwHZ77SHdAEuCo8gP64Kdg81o/fKuSMQ5X7hxNL7v/omf1XHBt+q1 FjhQ== X-Gm-Message-State: AElRT7FnVQI6GoubEvrtScVzWfcpLrkAyx+hMjF6/m8WyVHTmGULQl72 nNxbvf5Cxv9dbvtjlhhxabuARMz/ X-Google-Smtp-Source: AIpwx4+EZ03J3uP8LHSBqil7E4Y/9iZutNLpdNPREBx4SU64gm97b4I2NPTxbSiq/WjL2dAe7nDkKg== X-Received: by 10.223.225.17 with SMTP id d17mr15936332wri.51.1522945744639; Thu, 05 Apr 2018 09:29:04 -0700 (PDT) Received: from bens-mac.home (LFbn-NIC-1-211-113.w2-15.abo.wanadoo.fr. [2.15.58.113]) by smtp.gmail.com with ESMTPSA id u17sm6116759wmu.16.2018.04.05.09.29.03 for (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 05 Apr 2018 09:29:03 -0700 (PDT) Content-Type: text/plain; charset=us-ascii; delsp=yes; format=flowed Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) Subject: Re: Linux NFS client and FreeBSD server strangeness From: Ben RUBSON In-Reply-To: <369fab06-6213-ba87-cc66-c9829e8a76a0@sentex.net> Date: Thu, 5 Apr 2018 18:29:02 +0200 Content-Transfer-Encoding: 7bit Message-Id: References: <369fab06-6213-ba87-cc66-c9829e8a76a0@sentex.net> To: "freebsd-fs@freebsd.org" X-Mailer: Apple Mail (2.3124) X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 05 Apr 2018 16:29:06 -0000 On 04 Apr 2018 20:27, Mike Tancsa wrote: > Note, doing something like > > dd if=/dev/zero of=/backup/test.bin bs=4096 count=5000000 Note that this test may not be really relevant if you have ZFS compression enabled. > I too am using 9000 for the MTU. Did you try to use smaller MTU ? Some network adapters are known to have bugs requesting 9K mbufs for large MTUs. Especially Mellanox, not sure about Chelsio though. My 2 cents :) Ben