From owner-freebsd-stable@FreeBSD.ORG Mon Aug 18 21:29:26 2014 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 1C81446C for ; Mon, 18 Aug 2014 21:29:26 +0000 (UTC) Received: from mail.intermedix.com (mail.epbs.com [66.210.191.9]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "Barracuda/emailAddress=sales@barracuda.com", Issuer "Barracuda/emailAddress=sales@barracuda.com" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id CF8C43966 for ; Mon, 18 Aug 2014 21:29:24 +0000 (UTC) X-ASG-Debug-ID: 1408397363-04995637383781b0001-BIHDGU Received: from mailgate01.corp.okcyok1.priv.intermedix.com (mailgate01.epbs.com [10.130.4.35]) by mail.intermedix.com with ESMTP id 34noBkq0K86RCbm4; Mon, 18 Aug 2014 16:29:23 -0500 (CDT) X-Barracuda-Envelope-From: Steve.Polyack@intermedix.com X-ASG-Whitelist: Client X-WSS-ID: 0NAIUCU-02-2SN-02 X-M-MSG: Received: from exchange02.epbs.com (exchange02.okcyok0.priv.intermedix.com [192.168.25.29]) (using TLSv1 with cipher RC4-MD5 (128/128 bits)) (No client certificate requested) by mailgate01.corp.okcyok1.priv.intermedix.com (Postfix) with ESMTPS id 27E4231A166; Mon, 18 Aug 2014 16:29:18 -0500 (CDT) Received: from EXCHANGE03.epbs.com ([0000:0000:0000:0000:0000:0000:0.0.0.1]) by exchange02.epbs.com ([192.168.25.29]) with mapi; Mon, 18 Aug 2014 16:29:23 -0500 From: "Polyack, Steve" To: Alan Cox , "freebsd-stable@freebsd.org" Date: Mon, 18 Aug 2014 16:29:21 -0500 Subject: RE: vmdaemon CPU usage and poor performance in 10.0-RELEASE Thread-Topic: vmdaemon CPU usage and poor performance in 10.0-RELEASE X-ASG-Orig-Subj: RE: vmdaemon CPU usage and poor performance in 10.0-RELEASE Thread-Index: Ac+7F1fV1ATVPejuS0itzDoE5WfKKwAE9KdA Message-ID: <4D557EC7CC2A544AA7C1A3B9CBA2B3672609BBA64F@exchange03.epbs.com> References: <4D557EC7CC2A544AA7C1A3B9CBA2B36726098846B4@exchange03.epbs.com> <20140813152522.GI9400@home.opsec.eu> <4D557EC7CC2A544AA7C1A3B9CBA2B36726098847AF@exchange03.epbs.com> <4D557EC7CC2A544AA7C1A3B9CBA2B3672609BBA3C4@exchange03.epbs.com> <53F24E5B.1010809@rice.edu> In-Reply-To: <53F24E5B.1010809@rice.edu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Barracuda-Connect: mailgate01.epbs.com[10.130.4.35] X-Barracuda-Start-Time: 1408397363 X-Barracuda-URL: http://192.168.25.21:8000/cgi-mod/mark.cgi X-Virus-Scanned: by bsmtpd at intermedix.com X-Barracuda-BRTS-Status: 1 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Aug 2014 21:29:26 -0000 > -----Original Message----- > From: owner-freebsd-stable@freebsd.org [mailto:owner-freebsd- > stable@freebsd.org] On Behalf Of Alan Cox > Sent: Monday, August 18, 2014 3:05 PM > To: freebsd-stable@freebsd.org > Subject: Re: vmdaemon CPU usage and poor performance in 10.0-RELEASE >=20 > On 08/18/2014 13:42, Polyack, Steve wrote: > > Excuse my poorly formatted reply at the moment, but this seems to have > fixed our problems. I'm going to update the bug report with a note. > > > > Thanks Alan! >=20 > You're welcome. And, thanks for letting me know of the outcome. >=20 Actually, I may have spoken too soon, as it looks like we're seeing vmdaemo= n tying up the system again: root 6 100.0 0.0 0 16 - DL Wed04PM 4= :37.95 [vmdaemon] Is there anything I can check to help narrow down what may be the problem? = KTrace/truss on the "process" doesn't give any information, I suppose beca= use it's actually a kernel thread. For the "patch" we simply stole vm_pageout.c from r265945. Steve > >> -----Original Message----- > >> From: owner-freebsd-stable@freebsd.org [mailto:owner-freebsd- > >> stable@freebsd.org] On Behalf Of Alan Cox > >> Sent: Wednesday, August 13, 2014 12:14 PM > >> To: Polyack, Steve > >> Cc: Kurt Jaeger; freebsd-stable@freebsd.org > >> Subject: Re: vmdaemon CPU usage and poor performance in 10.0-RELEASE > >> > >> On Wed, Aug 13, 2014 at 10:42 AM, Polyack, Steve < > >> Steve.Polyack@intermedix.com> wrote: > >> > >>>> -----Original Message----- > >>>> From: Kurt Jaeger [mailto:lists@opsec.eu] > >>>> Sent: Wednesday, August 13, 2014 11:25 AM > >>>> > >>>> Hi! > >>>> > >>>>> We have a handful of database servers running FreeBSD 10.0-RELEASE > >>>>> and PostgreSQL 9.3.4. The servers have 128GB or 256GB of RAM. > >>>> Are you aware of the recent work on that topic ? > >>>> > >>>> https://www.freebsd.org/news/status/report-2014-04-2014- > >>>> 06.html#PostgreSQL-Performance-Improvements > >>>> > >>>> Maybe kib@ knows more about this ? > >>>> > >>> I've recently read over this and some other posts, but they all seem = to > >>> center around poor postgres performance. In our case at least, some > light > >>> to medium usage of postgres generally makes the entire system > unusable. > >>> > >>> The patches & documents linked there also all seem to be for -CURRENT= , > >>> which we aren't running. We're not too keen on the idea of using > >> CURRENT > >>> in production, either. We're planning on testing 10-STABLE, but I wa= s > just > >>> hoping to gain some insight into what the problem may be and whether > >> recent > >>> commits to vmdaemon code in the -STABLE tree may have a positive > effect > >> on > >>> what we've seen. > >>> > >>> > >> There is a good chance that your problem is fixed by r265945. > >> _______________________________________________ > >> freebsd-stable@freebsd.org mailing list > >> http://lists.freebsd.org/mailman/listinfo/freebsd-stable > >> To unsubscribe, send any mail to "freebsd-stable- > >> unsubscribe@freebsd.org" > > _______________________________________________ > > freebsd-stable@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > > To unsubscribe, send any mail to "freebsd-stable- > unsubscribe@freebsd.org" > > >=20 > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable- > unsubscribe@freebsd.org"