Date: Tue, 26 May 2009 14:16:33 -0500 From: "Gary Gatten" <Ggatten@waddell.com> To: "Kirk Strauser" <kirk@strauser.com>, <freebsd-questions@freebsd.org> Subject: RE: FreeBSD & Software RAID Message-ID: <70C0964126D66F458E688618E1CD008A0793ED96@WADPEXV0.waddell.com> In-Reply-To: <200905261400.22053.kirk@strauser.com> References: <4A1AA3DC.5020300@network-i.net><4A1C3725.8040509@infracaninophile.co.uk><70C0964126D66F458E688618E1CD008A0793ED94@WADPEXV0.waddell.com> <200905261400.22053.kirk@strauser.com>
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10-4, thanks! -----Original Message----- From: owner-freebsd-questions@freebsd.org [mailto:owner-freebsd-questions@freebsd.org] On Behalf Of Kirk Strauser Sent: Tuesday, May 26, 2009 2:00 PM To: freebsd-questions@freebsd.org Subject: Re: FreeBSD & Software RAID On Tuesday 26 May 2009 01:44:51 pm Gary Gatten wrote: > What about with PAE and/or other extension schemes? > > If it's just memory requirements, can I assume if I don't have a $hit > load of storage and billions of files it will work "ok" with 4GB of RAM? > I guess I'm just making sure there isn't some bug that only exists on > the i386 architecture? My understanding is that it's much more than "just" the memory addressing.=20=20 ZFS is thoroughly 64-bit and uses 64-bit math pervasively. That means you=20 have to emulate all those operations with 2 32-bit values, and on the=20 register-starved x86 platform you end up with absolutely horrible performance.=20=20 Furthermore, it's just not that well tested. Sun designed ZFS for 64-bit=20 systems and I think 32-bit support was pretty much an afterthought. --=20 Kirk Strauser _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" <font size=3D"1"> <div style=3D'border:none;border-bottom:double windowtext 2.25pt;padding:0i= n 0in 1.0pt 0in'> </div> "This email is intended to be reviewed by only the intended recipient and may contain information that is privileged and/or confidential. If you are not the intended recipient, you are hereby notified that any review, use, dissemination, disclosure or copying of this email and its attachments, if any, is strictly prohibited. If you have received this email in error, please immediately notify the sender by return email and delete this email from your system." </font>
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