From owner-freebsd-net@freebsd.org Fri Apr 20 19:16:03 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 4A28BF9472A for ; Fri, 20 Apr 2018 19:16:03 +0000 (UTC) (envelope-from niels@kobschaetzki.net) Received: from hatchetman.psychedelicpirate.com (unknown [IPv6:2001:1560:a000:2:e98c:a1e3:87d8:7bfc]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 9EC6682E59 for ; Fri, 20 Apr 2018 19:16:02 +0000 (UTC) (envelope-from niels@kobschaetzki.net) Received: from hatchetman.psychedelicpirate.com (localhost [127.0.0.1]) by hatchetman.psychedelicpirate.com (OpenSMTPD) with ESMTP id f3dd13f7; Fri, 20 Apr 2018 21:15:57 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=kobschaetzki.net; h= content-type:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; s= selector1; bh=icmsie2BAeOFvAaLwa6E4GOiaHY=; b=ky3fHK6Q3itAuNKQJ0 08f1syrw4aopRvrlM/twbHbNbiVk7+SueQUcwgJ3w/Wc/h41s6IuU1C+0hyAT/u4 8dnHzEAkqJISVH8f1reEIjTBcAX/7QVrOkYhINemd+A2+LrSigYaxxjJQUN1O+9T YdxbfyEcHDzHb1GQNIvVAeRHc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=kobschaetzki.net; h= content-type:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; q=dns; s= selector1; b=CEIVWWyHvixRQHfv2oAIOO9lo8R+F8KK/HXwHVGlFkaGySxWiwg fur1ayC4x03ZJ3++M/Aa3vrPT8kDmv9jHHkP8V1Xk7x5fs2YLdtQQ6ubQtQx+WB0 BjYloIzsmCpKI9R7NGWcTnyBaV/E8ihxHH7Joy6wL8tLTi0b95dfxtvk= Received: from hatchetman.psychedelicpirate.com (localhost [127.0.0.1]) by hatchetman.psychedelicpirate.com (OpenSMTPD) with ESMTP id bdfce77e; Fri, 20 Apr 2018 21:15:52 +0200 (CEST) Received: from [10.0.1.83] (ip5b41bd2e.dynamic.kabel-deutschland.de [91.65.189.46]) by mail.kobschaetzki.net (OpenSMTPD) with ESMTPSA id 0b430e8b (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256:NO); Fri, 20 Apr 2018 21:15:52 +0200 (CEST) Mime-Version: 1.0 (1.0) Subject: Re: High rate of NFS cache misses after upgrading from 10.3-prerelease to 11.1-release From: Niels Kobschaetzki X-Mailer: iPhone Mail (15E216) In-Reply-To: <4B3B8AD9-F923-490F-B2B6-09F4517E8D28@ultra-secure.de> Date: Fri, 20 Apr 2018 21:15:50 +0200 Cc: Rick Macklem , "freebsd-net@freebsd.org" Message-Id: <16C35EAA-B3FA-4126-A7AD-2711555C1D28@kobschaetzki.net> References: <4B3B8AD9-F923-490F-B2B6-09F4517E8D28@ultra-secure.de> To: Rainer Duffner X-Virus-Scanned: ClamAV using ClamSMTP Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.25 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 20 Apr 2018 19:16:03 -0000 > On 19. Apr 2018, at 00:07, Rainer Duffner wrote: >=20 >=20 >=20 >> Am 17.04.2018 um 06:45 schrieb Niels Kobsch=C3=A4tzki : >>=20 >> solved now finally my problem after two weeks and it wasn't the NFS. I >> just got derailed from the real solution again and again from some >> people, thus I didn't look in the right place. The cache misses are gone >> now, the application performs now faster than on the other servers. >=20 >=20 >=20 > OK, but what was it? Miscommunication and a missing php71-opcache. Apparently php is doing then a= lot of syscalls which lead to getattr-call which cannot be handled by the n= fs cache. A problem for a lot of years now and it won=E2=80=99t be dealt wit= h. Niels P.s. the application is now nearly twice as fast but needs half the RAM and p= roduces half the load than on FBSD 10.3/php56=