Date: Sun, 4 Nov 2007 13:02:08 +0100 From: Peter Schuller <peter.schuller@infidyne.com> To: Kris Kennaway <kris@freebsd.org> Cc: freebsd-current@freebsd.org Subject: Re: ZFS Hangs Message-ID: <200711041302.08877.peter.schuller@infidyne.com> In-Reply-To: <472D9B2A.5080900@FreeBSD.org> References: <200711021208.25913.Thomas.Sparrevohn@btinternet.com> <200711040948.25732.peter.schuller@infidyne.com> <472D9B2A.5080900@FreeBSD.org>
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[-- Attachment #1 --] > 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, and RAM increased from 1 GB to 3 GB (and FreeBSD itself upgraded several times since then). I did not look into it in terrible detail; I just observed by tracing that the I/O in question was definitely the package database, and that it was definitely accessing the same files mutiple times. I assumed it was a caching effect at the time, given all the maxvnode tweaking and sizing restrictions put on the ARC. I do know I never saw it after the memory increase. Also, this might have been prior to disabling prefetch. If it was, perhaps the prefetch hosed the cache. (Are the prefetch issues still there, anyone?) -- / Peter Schuller PGP userID: 0xE9758B7D or 'Peter Schuller <peter.schuller@infidyne.com>' Key retrieval: Send an E-Mail to getpgpkey@scode.org E-Mail: peter.schuller@infidyne.com Web: http://www.scode.org [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQBHLbTADNor2+l1i30RAqb7AKC4qq93UEJx0VA2GrQ1kuxSKUnmmgCg5sDl /bvGfhes1ML3YwsHQVVvUJw= =pvF9 -----END PGP SIGNATURE-----
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