Re: [SLUG] Advice Request for moving a Ubuntu installation to a larger disk and 4Gb RAM

2009-10-28 Thread Daniel Pittman
jam j...@tigger.ws writes: [snip] Based on what you have said do yourself a favour and don't do LVM.  LVM is a wonderful idea but it requires that you understand statistics related to disk failure and the consequences of that. This comment makes no sense to me: in what way does LVM

Re: [SLUG] Advice Request for moving a Ubuntu installation to a larger disk and 4Gb RAM

2009-10-28 Thread Alan L Tyree
SNIP Aside from the work mentioned above, I also edit some really big video files and do ffmpeg transformations on them. Right. In which case 64 bit is for you. So, is there some way of choosing which of the above is the best option for me? I'd suggest trying both out and see.

Re: [SLUG] Advice Request for moving a Ubuntu installation to a larger disk and 4Gb RAM

2009-10-28 Thread jam
On Wednesday 28 October 2009 18:37:16 slug-requ...@slug.org.au wrote: jam j...@tigger.ws writes: [snip] Based on what you have said do yourself a favour and don't do LVM.  LVM is a wonderful idea but it requires that you understand statistics related to disk failure and the

[SLUG] Advice Request for moving a Ubuntu installation to a larger disk and 4Gb RAM

2009-10-27 Thread Bill Donoghoe
I am about to upgrade a HP notebook to a larger hard disk (replace the 90Gb disk with 500Gb) and double the RAM (from 2Gb to 4Gb). In addition, to complicate matters, I would like to LVM on the larger disk to manage the linux partitions. This is the final stage of my slow move from Windows to

Re: [SLUG] Advice Request for moving a Ubuntu installation to a larger disk and 4Gb RAM

2009-10-27 Thread Alan L Tyree
On Tue, 27 Oct 2009 13:15:08 +1100 Bill Donoghoe donogh...@gmail.com wrote: I am about to upgrade a HP notebook to a larger hard disk (replace the 90Gb disk with 500Gb) and double the RAM (from 2Gb to 4Gb). In addition, to complicate matters, I would like to LVM on the larger disk to manage

Re: [SLUG] Advice Request for moving a Ubuntu installation to a larger disk and 4Gb RAM

2009-10-27 Thread Robert Collins
On Tue, 2009-10-27 at 13:15 +1100, Bill Donoghoe wrote: 1. What do I need to do to get Ubuntu to use 4Gb RAM? My current Jaunty installation only recognises around 3Gb. Is this just a kernel upgrade or If I remember correctly we don't support 3GB on 32-bit installs anymore - the

Re: [SLUG] Advice Request for moving a Ubuntu installation to a larger disk and 4Gb RAM

2009-10-27 Thread Tony Sceats
AIUI you can however run a 32 bit userspace on a 64-bit kernel - but I've not done this so can't offer advise ;). I do this all the time and it works, however the most common problem is not having all the 32 bit libraries installed, eg, glibc, where you will have the 64 bit equivalents

Re: [SLUG] Advice Request for moving a Ubuntu installation to a larger disk and 4Gb RAM

2009-10-27 Thread Alan L Tyree
On Wed, 28 Oct 2009 10:39:48 +1100 Robert Collins robe...@robertcollins.net wrote: On Tue, 2009-10-27 at 13:15 +1100, Bill Donoghoe wrote: 1. What do I need to do to get Ubuntu to use 4Gb RAM? My current Jaunty installation only recognises around 3Gb. Is this just a kernel upgrade

Re: [SLUG] Advice Request for moving a Ubuntu installation to a larger disk and 4Gb RAM

2009-10-27 Thread jam
On Wednesday 28 October 2009 09:00:06 slug-requ...@slug.org.au wrote: I am about to upgrade a HP notebook to a larger hard disk (replace the 90Gb disk with 500Gb) and double the RAM (from 2Gb to 4Gb). In addition, to complicate matters, I would like to LVM on the larger disk to manage the

Re: [SLUG] Advice Request for moving a Ubuntu installation to a larger disk and 4Gb RAM

2009-10-27 Thread Daniel Pittman
Alan L Tyree a...@austlii.edu.au writes: On Wed, 28 Oct 2009 10:39:48 +1100 Robert Collins robe...@robertcollins.net wrote: On Tue, 2009-10-27 at 13:15 +1100, Bill Donoghoe wrote: 1. What do I need to do to get Ubuntu to use 4Gb RAM? My current Jaunty installation only recognises around

Re: [SLUG] Advice Request for moving a Ubuntu installation to a larger disk and 4Gb RAM

2009-10-27 Thread Daniel Pittman
jam j...@tigger.ws writes: On Wednesday 28 October 2009 09:00:06 slug-requ...@slug.org.au wrote: I am about to upgrade a HP notebook to a larger hard disk (replace the 90Gb disk with 500Gb) and double the RAM (from 2Gb to 4Gb). In addition, to complicate matters, I would like to LVM on the

Re: [SLUG] Advice Request for moving a Ubuntu installation to a larger disk and 4Gb RAM

2009-10-27 Thread Alan Tyree
On Wed, Oct 28, 2009 at 12:51 PM, Daniel Pittman dan...@rimspace.netwrote: Alan L Tyree a...@austlii.edu.au writes: On Wed, 28 Oct 2009 10:39:48 +1100 Robert Collins robe...@robertcollins.net wrote: On Tue, 2009-10-27 at 13:15 +1100, Bill Donoghoe wrote: 1. What do I need to do to

Re: [SLUG] Advice Request for moving a Ubuntu installation to a larger disk and 4Gb RAM

2009-10-27 Thread Adrian Chadd
On Wed, Oct 28, 2009, Alan Tyree wrote: That's interesting, Daniel. So what are my tradeoffs. Run the normal kernel: faster but only 2.5gb; Run the bigmem kernel and suffer the performance but have more memory. Hm, does Linux actually -copy- data around when doing PAE? The whole point behind

Re: [SLUG] Advice Request for moving a Ubuntu installation to a larger disk and 4Gb RAM

2009-10-27 Thread Daniel Pittman
Alan Tyree a...@austlii.edu.au writes: On Wed, Oct 28, 2009 at 12:51 PM, Daniel Pittman dan...@rimspace.netwrote: [...] It is there; the two common problems are that low memory fills, causing extra competition, and that your memory bandwidth is terribly reduced through extra TLB flushing to

Re: [SLUG] Advice Request for moving a Ubuntu installation to a larger disk and 4Gb RAM

2009-10-27 Thread Daniel Pittman
Adrian Chadd adr...@creative.net.au writes: On Wed, Oct 28, 2009, Alan Tyree wrote: That's interesting, Daniel. So what are my tradeoffs. Run the normal kernel: faster but only 2.5gb; Run the bigmem kernel and suffer the performance but have more memory. Hm, does Linux actually -copy- data

Re: [SLUG] Advice Request for moving a Ubuntu installation to a larger disk and 4Gb RAM

2009-10-27 Thread jam
[snip] Based on what you have said do yourself a favour and don't do LVM.  LVM is a wonderful idea but it requires that you understand statistics related to disk failure and the consequences of that. This comment makes no sense to me: in what way does LVM change the risks associated with

Re: [SLUG] Advice Request for moving a Ubuntu installation to a larger disk and 4Gb RAM

2009-10-27 Thread Steve Kowalik
jam wrote: Along with all the cute benefits that LVM offer is a much higher disk failure rate. Is the windows-linux convert going to pay attention to needed backup regime? And how exactly does LVM offer a much higher disk failure rate ? Cheers, --