Received: from magus.postgresql.org (magus.postgresql.org [87.238.57.229]) by mail.postgresql.org (Postfix) with ESMTP id 7C0037591C6 for ; Thu, 24 May 2012 14:09:28 -0300 (ADT) Received: from cl-174.chi-02.us.sixxs.net ([2001:4978:f:ad::2] helo=tamriel.snowman.net) by magus.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1SXbXR-00051N-PH for pgsql-performance@postgresql.org; Thu, 24 May 2012 17:09:27 +0000 Received: by tamriel.snowman.net (Postfix, from userid 1000) id 05C0522940; Thu, 24 May 2012 13:09:12 -0400 (EDT) Date: Thu, 24 May 2012 13:09:12 -0400 From: Stephen Frost To: "Rajesh Kumar. Mallah" Cc: pgsql-performance@postgresql.org Subject: Re: High load average in 64-core server , no I/O wait and CPU is idle Message-ID: <20120524170912.GQ1267@tamriel.snowman.net> References: <20120524155737.GP1267@tamriel.snowman.net> <8120287.465321337878795023.JavaMail.root@zmbox01.trade-india-local.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="7+eulfoxjVEk5kOS" Content-Disposition: inline In-Reply-To: <8120287.465321337878795023.JavaMail.root@zmbox01.trade-india-local.com> X-Editor: Vim http://www.vim.org/ X-Info: http://www.snowman.net X-Operating-System: Linux/3.2.0-1-amd64 (x86_64) X-Uptime: 13:08:12 up 87 days, 23:13, 14 users, load average: 0.27, 0.13, 0.07 User-Agent: Mutt/1.5.21 (2010-09-15) X-Pg-Spam-Score: -1.9 (-) X-Archive-Number: 201205/127 X-Sequence-Number: 46951 --7+eulfoxjVEk5kOS Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable * Rajesh Kumar. Mallah (mallah@tradeindia.com) wrote: > We are running linux with kernel 3.2.X=20 > (which has the lseek improvements) Ah, good. > Thanks for the reference , even i thought so (LockManager) , > but we are actually also running out db max connections (also)=20 > ( which is currently at 600) , when that happens something at=20 > the beginning of the application stack also gets dysfunctional and it=20 > changes the very input to the system. ( think of negative feedback system= s )=20 Oh. Yeah, have you considered pgbouncer? > It is sort of complicated but i will definitely update list ,=20 > when i get to the point of putting the blame on DB :-) . Ok. :) Thanks, Stephen --7+eulfoxjVEk5kOS Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iEYEARECAAYFAk++azgACgkQrzgMPqB3kihOdgCfUSilCut+sGK0qw5/+6UWhOyd IoEAn2JP9ux01J2RJql3JxHJeIIoWEQ9 =LMIW -----END PGP SIGNATURE----- --7+eulfoxjVEk5kOS--