From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1MltRU-0000u4-CJ for garchives@archives.gentoo.org; Thu, 10 Sep 2009 23:52:44 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 61D61E0818; Thu, 10 Sep 2009 23:52:43 +0000 (UTC) Received: from qw-out-1920.google.com (qw-out-1920.google.com [74.125.92.145]) by pigeon.gentoo.org (Postfix) with ESMTP id 3F02CE0818 for ; Thu, 10 Sep 2009 23:52:43 +0000 (UTC) Received: by qw-out-1920.google.com with SMTP id 4so206663qwk.10 for ; Thu, 10 Sep 2009 16:52:43 -0700 (PDT) Received: by 10.224.58.166 with SMTP id g38mr2029764qah.32.1252626762854; Thu, 10 Sep 2009 16:52:42 -0700 (PDT) Received: from dwayne.homenetwork (75-105-242-195.cust.wildblue.net [75.105.242.195]) by mx.google.com with ESMTPS id 6sm307103qwd.53.2009.09.10.16.52.38 (version=TLSv1/SSLv3 cipher=RC4-MD5); Thu, 10 Sep 2009 16:52:42 -0700 (PDT) From: Dwayne Sykes To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] How often -uD world? Date: Thu, 10 Sep 2009 19:51:39 -0400 User-Agent: KMail/1.12.1 (Linux/2.6.30-gentoo-r4; KDE/4.3.1; x86_64; ; ) References: <200909101030.04520.alan.mckinnon@gmail.com> In-Reply-To: Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart4696132.EdP6xBEoL7"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200909101951.52600.Dwayne_Sykes@dishmail.net> X-Archives-Salt: 865c0578-fa36-46d2-bf4f-5340c0212f92 X-Archives-Hash: 6cc4d1235a3d9a7cae48e5b260c7025e --nextPart4696132.EdP6xBEoL7 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable On Thursday 10 September 2009 6:54:34 pm Stroller wrote: > On 10 Sep 2009, at 09:30, Alan McKinnon wrote: > > ... > > But I doubt the wisdom of updating an SSD netbook on the machine > > itself: > > > > 1. Wear on the SSD itself with all those compiles > > ... >=20 > No harm in compiling on a hard-drive, via NFs or otherwise. I believe > read speed of SSDs is fast, writes are slow. >=20 > However, I am sceptical of wear claims, at least of you're using =BD- > decent flash memory (and SanDisk & Kingston are cheap these days, at > least in "modest" but usable sizes like 4gig). >=20 > I have read many people talk about wear of flash memory to be a > problem, but I don't think from anyone who's actually HAD a problem > with it. I have read of many people using it happily for root > filesystems over periods of years. >=20 > I concede that syncing the portage tree & the compilation of emerging > packages results in an above-average number of writes, but I have this > notion that the wear / limited writes problems have been largely > overcome with modern flash memory (c.f. "write levelling"). > Furthermore I have heard figures bandied about in the order of > 100,000s per block and such as "you'd need to write to the flash card > constantly for years" in order to kill it. >=20 > I would really love to hear empirical evidence either way on this > matter, but I don't think the OP needs to be too cautious of wear. (Of > course this advice is worth what he paid for it, and warrantied to > that value). >=20 > Some previous comments: > http://archives.gentoo.org/gentoo-user/msg_d6e65b4d64a51c97f7c43c723e525e= 06 > .xml >=20 > Stroller. >=20 I would think that as long as you back up personal and important files you= =20 could do it as often as needed to maintsin security and stability. You may= =20 want to use --pretend (-p) to see exactly what would be done and also use=20 regular updates instead of deep updates which should only be used when need= ed. --nextPart4696132.EdP6xBEoL7 Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.11 (GNU/Linux) iEYEABECAAYFAkqpkRgACgkQb/nXFWOq/2AqvgCggQRZPXHMOvHSnAnbNybqM6w6 0dEAoIs7Wr5Wu5H/xRXPVT2bKDWpBCxW =5EY4 -----END PGP SIGNATURE----- --nextPart4696132.EdP6xBEoL7--