From owner-freebsd-current@FreeBSD.ORG Sun Nov 4 12:08:21 2007 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 01A7F16A418 for ; Sun, 4 Nov 2007 12:08:21 +0000 (UTC) (envelope-from peter.schuller@infidyne.com) Received: from smtp.infidyne.com (ds9.infidyne.com [88.80.6.206]) by mx1.freebsd.org (Postfix) with ESMTP id D65E713C4B2 for ; Sun, 4 Nov 2007 12:08:19 +0000 (UTC) (envelope-from peter.schuller@infidyne.com) Received: from c-5416e555.03-51-73746f3.cust.bredbandsbolaget.se (c-5416e555.03-51-73746f3.cust.bredbandsbolaget.se [85.229.22.84]) by smtp.infidyne.com (Postfix) with ESMTP id 0F0CECB21; Sun, 4 Nov 2007 13:00:33 +0100 (CET) From: Peter Schuller To: Kris Kennaway Date: Sun, 4 Nov 2007 13:02:08 +0100 User-Agent: KMail/1.9.7 References: <200711021208.25913.Thomas.Sparrevohn@btinternet.com> <200711040948.25732.peter.schuller@infidyne.com> <472D9B2A.5080900@FreeBSD.org> In-Reply-To: <472D9B2A.5080900@FreeBSD.org> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart2747767.37xN6SKecN"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200711041302.08877.peter.schuller@infidyne.com> Cc: freebsd-current@freebsd.org Subject: Re: ZFS Hangs X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 04 Nov 2007 12:08:21 -0000 --nextPart2747767.37xN6SKecN Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline > It certainly could be a caching effect but the particular problem you > were seeing should have been fixed. Are you still seeing it? I am not still seeing it; the machine has since been switched to AMD 64, an= d=20 RAM increased from 1 GB to 3 GB (and FreeBSD itself upgraded several times= =20 since then). I did not look into it in terrible detail; I just observed by= =20 tracing that the I/O in question was definitely the package database, and=20 that it was definitely accessing the same files mutiple times. I assumed it= =20 was a caching effect at the time, given all the maxvnode tweaking and sizin= g=20 restrictions put on the ARC. I do know I never saw it after the memory=20 increase. Also, this might have been prior to disabling prefetch. If it was, perhaps = the=20 prefetch hosed the cache. (Are the prefetch issues still there, anyone?) =2D-=20 / Peter Schuller PGP userID: 0xE9758B7D or 'Peter Schuller ' Key retrieval: Send an E-Mail to getpgpkey@scode.org E-Mail: peter.schuller@infidyne.com Web: http://www.scode.org --nextPart2747767.37xN6SKecN Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQBHLbTADNor2+l1i30RAqb7AKC4qq93UEJx0VA2GrQ1kuxSKUnmmgCg5sDl /bvGfhes1ML3YwsHQVVvUJw= =pvF9 -----END PGP SIGNATURE----- --nextPart2747767.37xN6SKecN--