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My server RAM 12 GB and OS 32bit do I have to install 64bit?




Posted by never1, 10-06-2010, 07:22 AM
Hello, My server I7 CPU and 12 GB of Memory. My OS is 32 Bit. I asked my provider to reload my OS to 64Bit and they said: Please Advise me

Posted by lynxus, 10-06-2010, 07:24 AM
No, Your 32bit system should be fine with a PAE kernel. http://en.wikipedia.org/wiki/Physical_Address_Extension Obviously, If you want to use 64bit services then yeah, move to a 64bit OS. However it wont effect the amount of memory the system see's.

Posted by skullbox, 10-06-2010, 09:35 AM
I would stay with the PAE kernel. Most of the stuff you will use wouldn't take advantage of a 64-bit OS anyways. In a way 64-bit OSes are ahead of their time because not everything is supported on it.

Posted by 24nt7linux, 10-06-2010, 10:41 AM
If you plan on using a machine that has more than 4GB of RAM, you'll need to use the 64-bit version of your distribution because 32-bit operating systems are only able to handle up to 4GB. But I think, as you are using PAE kernal, it will be alright. 64-bit Linux distributions are pretty much identical in performance and features as their 32-bit counterparts but still some applications won't work. So, stay on with 32 bit unless you have a valid reason to switch to 64 bit.

Posted by Hillockhosting, 10-06-2010, 10:50 AM
32 bit with PAE extension is a good choice. You can do this

Posted by Dougy, 10-06-2010, 12:39 PM
PAE causes a big hit to performance. You'll get a very significant gain switching.

Posted by never1, 10-06-2010, 01:21 PM
So what do you advise me? Reload my OS to 64bit? thanks Last edited by never1; 10-06-2010 at 01:35 PM.

Posted by eth00, 10-06-2010, 01:51 PM
I would say go with the 64bit OS, really odd they installed a 32bit OS by default. It actually can make a difference with things like MySQL if you need it to use a LOT of memory which with 12Gb of RAM you might want.

Posted by khunj, 10-06-2010, 02:01 PM
I am amazed by your hosting company response

Posted by Dennis H, 10-06-2010, 02:25 PM
Maybe they do not know what he intend to use the server for?

Posted by never1, 10-06-2010, 02:35 PM
Hello, I hosted only one large VB forum My web site sizer than 40 GB and visit my web site more than 25000 visitors dayly. I asked them support that I want to reload to 64bit and reloading in process

Posted by Dougy, 10-06-2010, 05:04 PM
For a big forum, 64 bit is definitely what you need then. Good choice!

Posted by skullbox, 10-06-2010, 05:19 PM
Technically they were right. The machine will see/use 12GB via 32bit PAE or 64bit OSes. It may use the memory differently depending on which kernel is used.

Posted by never1, 10-06-2010, 06:24 PM
Thanks All

Posted by matt2kjones, 10-07-2010, 01:00 PM
Considering the size of the server you bought, I'm shocked that they installed 32bit with PAE rather than going to 64bit. They should have at least asked you prior to install whether you wanted 32bit PAE before installing it. How they can say it will not make a difference is a load of crap. Basically, the operating system can use the 12GB of ram, and the processes running, together, will be able to use the 12 GB of ram, BUT... and this is the major drawback with PAE.... the 32-bit size of the virtual address is not changed, so regular application software continues to use instructions with 32-bit addresses and (in a flat memory model) is limited to 4 gigabytes of virtual address space. So no single process can use more than 4GB...... which is not good, because it would be nice to allow MySQL to use over 4GB considering your site size (I assume a large database).

Posted by matt2kjones, 10-07-2010, 01:08 PM
Also, expanding on my last post. Don't let your provider charge you for a re-install... Considering that you configuration is going to be assigning most of your ram to MySQL, PAE is NOT a suitable solution for you.... so the money you have invested in the hardware you cant use in an efficient setup.... so in effect you would be paying for something you can't use. So they should not charge you for a re-install... not unless they asked you if you wanted 32bit or 64bit and you chose 32

Posted by never1, 10-07-2010, 02:39 PM
Thank you OS 64bit has successfully reloaded



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