From owner-freebsd-stable@freebsd.org Thu Feb 18 15:22:43 2016 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 741B4AACAE4 for ; Thu, 18 Feb 2016 15:22:43 +0000 (UTC) (envelope-from borjam@sarenet.es) Received: from cu01176a.smtpx.saremail.com (cu01176a.smtpx.saremail.com [195.16.150.151]) (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 321A1F1; Thu, 18 Feb 2016 15:22:42 +0000 (UTC) (envelope-from borjam@sarenet.es) Received: from [172.16.8.96] (izaro.sarenet.es [192.148.167.11]) by proxypop03.sare.net (Postfix) with ESMTPSA id C70959DE11F; Thu, 18 Feb 2016 16:16:07 +0100 (CET) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 9.2 \(3112\)) Subject: Re: 10-STABLE hangups frequently From: Borja Marcos In-Reply-To: <20160218002403.GA95789@alchemy.franken.de> Date: Thu, 18 Feb 2016 16:16:07 +0100 Cc: =?utf-8?Q?Henrik_Lidstr=C3=B6m?= , Hajimu UMEMOTO , Peter Jeremy , freebsd-stable@freebsd.org Content-Transfer-Encoding: quoted-printable Message-Id: <6FF1912A-3861-4496-A93F-680FA6479DE5@sarenet.es> References: <20160202200738.GA78969@server.rulingia.com> <56B761A4.7010901@restart.be> <56BD9FBA.3040002@lidstrom.eu> <20160218002403.GA95789@alchemy.franken.de> To: Marius Strobl X-Mailer: Apple Mail (2.3112) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 18 Feb 2016 15:22:43 -0000 > On 18 Feb 2016, at 01:24, Marius Strobl wrote: >=20 >=20 > Could those of you experiencing these hangs with ZFS please test > whether instead of reverting all of r292895, a kernel built with > just the merge of r291244 undone via the following patch gets > rid of that problem - especially on amd64 - and report back? > https://people.freebsd.org/~marius/r291244_reversal_10.diff Fist, a warning: as my report is very fuzzy, take it with a grain of = salt. That said, since two months ago more or less, I have been having = performance problems with a =E2=80=9Cplayground=E2=80=9D machine I use = for several purposes, like searching Netflow data, graphing performance = data from several machines with Orca, etc. =E2=80=94=E2=80=94=E2=80=94 CPU: Six-Core AMD Opteron(tm) Processor 2431 (2400.15-MHz K8-class CPU) Origin=3D"AuthenticAMD" Id=3D0x100f80 Family=3D0x10 Model=3D0x8 = Stepping=3D0 = Features=3D0x178bfbff Features2=3D0x802009 AMD = Features=3D0xee500800 AMD = Features2=3D0x37ff SVM: NP,NRIP,NAsids=3D64 TSC: P-state invariant real memory =3D 8589934592 (8192 MB) avail memory =3D 8270192640 (7887 MB) Event timer "LAPIC" quality 400 ACPI APIC Table: =E2=80=94=E2=80=94=E2=80=94 I was running lots of stuff (creating a lot of memory pressure) but the = system coped with it anyway. After one update (I use to track -STABLE) I = begun to have problems. Something I noticed was, the system begun = killing processes because of a lack of memory while the swap partition = wasn=E2=80=99t full at all. The wired memory would skyrocket as well. After reducing the clutter (ie, removing what I really didn=E2=80=99t = need) the server has been stable, but the performance (for example, when = performing large Netflow searches) has decreased remarkably. I have rebuilt -STABLE today with that patch, and something has = definitely changed. Performance is much better and memory consumption is = not growing like before, with the same NFsen, Orca and other stuff = running. I know this is not a serious report, I can=E2=80=99t do it with that = server, but I hope it rings a bell or somewhat confirms a data point. Borja.