64-bit netbooks with Debian linux
in [Debian]
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From: Stan Hoeppner on 5 May 2010 10:30 Ron Johnson put forth on 5/5/2010 8:56 AM: > On 05/05/2010 08:49 AM, Camaleón wrote: >> On Wed, 05 May 2010 09:42:03 +1000, Alex Samad wrote: >> >>> right tools for the job, I never ever thought about putting 64bit os on >>> my netbook - it physically limited to 2G of memory >> >> 64-bits kernels are not only intended for systems with tons of ram. Those >> kernels usually have enabled the "nx bit" and AFAIK, only 32 bits PAE >> kernels enable such feature. >> >> BTW, my Shuttle box has also a ram limitation of 2 GiB (and currently >> using only 1 GiB) but has installed "amd64". It runs fine, without >> noticeable drawbacks. >> > > The question, though, is: "What -- beyond geekness -- is the *benefit* > of amd64 in 'low' RAM systems?" Very little, if any, benefit for the vast majority of apps. Cache use is more efficient with 32bit kernel and app binaries due to smaller code, pointer, and data size. x86-64 binaries double the width and number of GPRs, so you get more efficient in-core code execution, though cache performance takes a hit, opposite of the 32bit case. For the vast majority of day-day applications such as web and mail the user won't notice a difference. That said... I happen to be resizing (downsizing, for web page use) about 150 digital camera .jpg files of ~3000 x ~2000 pixel dimension on a 32bit system using ImageMagick. I can only assume that the 64bit version of this binary would run more than a bit faster than the 32bit version. The system isn't x86-64 capable so I can't do a comparison. Image manipulation is one area where x86-64 binaries would definitely have an advantage over i386 (i686) binaries. Gimp would definitely perform better in many operations with x86-64. PDF readers would also probably run a bit faster. -- Stan -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/4BE180CD.6040702(a)hardwarefreak.com
From: Dirk Neumann on 5 May 2010 13:30 On Wed, 05 May 2010 08:56:48 -0500 Ron Johnson <ron.l.johnson(a)cox.net> wrote: > > > > The question, though, is: "What -- beyond geekness -- is the > *benefit* of amd64 in 'low' RAM systems?" I did some tests with my most used apps (gcc, tar, bzip2...) about 2 and a half year ago with i386 and amd64-kernels. Nearly the same behavior, with one exception: I/O (disk and console) is much faster on amd64, but I don't know why... If anyone is interested in details, I can search the results of this tests runs. Dirk. -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/20100505191918.b11bc4ac.neum_d(a)yahoo.de
From: Mark Allums on 5 May 2010 16:40 On 5/5/2010 8:49 AM, Camaleón wrote: > BTW, my Shuttle box has also a ram limitation of 2 GiB (and currently > using only 1 GiB) but has installed "amd64". It runs fine, without > noticeable drawbacks. A concern was "future-proofing". More than one GB is not needed now. What about later? -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/4BE1D665.8010201(a)allums.com
From: Bill Wohler on 13 May 2010 01:20
Peter Tenenbaum <quarkpt(a)gmail.com> writes: > First, I intend to build a home computer which will run linux, and > it will be 64-bit; since I'm quite new to maintaining my own linux > computers, I'd rather limit the number of differences between the > home machine and my portable. Hi PT, In regards to Debian, don't let this be a discriminator. If you had a 64-bit and 32-bit system, it would only mean that you'd have to burn two installation CDs. Once those CDs were installed, your installations would be mostly indistinguishable. After the initial install, Debian grabs the right bits for your system. When I switched from 32-bit to 64-bit, the only difference I saw besides a different installation image was a different kernel. -- Bill Wohler <wohler(a)newt.com> aka <Bill.Wohler(a)nasa.gov> http://www.newt.com/wohler/ GnuPG ID:610BD9AD -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/871vdgqt4k.fsf(a)olgas.newt.com |