Date: Sat, 22 Jan 2005 18:54:47 -0700 From: Scott Long <scottl@freebsd.org> To: Sven Willenberger <sven@dmv.com> Cc: freebsd-amd64@freebsd.org Subject: Re: Would this system work correctly with FreeBSD 5.3 ? Message-ID: <41F303E7.8000003@freebsd.org> In-Reply-To: <41F3022C.7070603@dmv.com> References: <41F1903D.3060508@celeritystorm.com> <20050121235550.GA85260@troutmask.apl.washington.edu> <41F199B3.1030809@freebsd.org> <41F3022C.7070603@dmv.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Sven Willenberger wrote: > > > Scott Long wrote: > >> >> 4GB+ is a problem on 5.3-RELEASE due to DMA issues. Only a small >> handful of storage drivers will actually work. >> > > We are looking to implement a postgresql solution using dual opteron/8G > RAM and LSI battery-backed scsi card (LSI MegaRAID 320-2X - 53C1030 > controller) RAID array. Are there any issues with this type of > configuration?? Looking at the hardware Release notes I do not see any > mention of this memory issue or what storage drivers are or are not > affected. The problem is not in the release notes because we didn't discover it until shortly after the release. The amr driver in 5.3-RELEASE has particularly bad problems with 4GB+. I've fixed it in both 5-STABLE and 6-CURRENT and it should be fairly reliable. There is a rare condition that causes problems under extreme load, but I think I fixed this as a side effect of other changes in 6-CURRENT. I'm currently testing and validating these changes for 5-STABLE. Scott
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?41F303E7.8000003>