LinuxQuestions.org
Latest LQ Deal: Latest LQ Deals
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie
User Name
Password
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!

Notices


Reply
  Search this Thread
Old 12-25-2015, 01:06 PM   #1
Gregg Bell
Senior Member
 
Registered: Mar 2014
Location: Illinois
Distribution: Xubuntu
Posts: 1,868

Rep: Reputation: 162Reputation: 162
Need help understanding RAM stats.


I've gathered the RAM data (see screenshot), but still am not sure about things. (For one, Sysinfo makes it seem like I have more memory available than the terminal. And in that last command what's the difference between memory free and memory available?)

I'm wondering if I can improve the performance of my computer. Like, in GBs, how much memory can I add to this computer? And do you think adding it would speed things up?

My take is I currently have 1 1/2 GB or 2GB RAM installed and can add either 2GB or 1 1/2 GB.

And I've added RAM memory before but that was on a Windows computer (I'm on Xubuntu 15.10 now and it's a different computer.) I went to Crucial.com and they do this online test where they guarantee that the memory you buy will work, but they don't do the test for Linux.

So how (and where) would I go to get the right memory for my Xubuntu computer?

Thanks.
Attached Thumbnails
Click image for larger version

Name:	1_062.png
Views:	25
Size:	178.4 KB
ID:	20373  
 
Old 12-25-2015, 02:43 PM   #2
273
LQ Addict
 
Registered: Dec 2011
Location: UK
Distribution: Debian Sid AMD64, Raspbian Wheezy, various VMs
Posts: 7,367

Rep: Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258
You seem to have 3.4GB (or, perhaps 3.5GiB*) of RAM showing as available which suggests to me you've really got 4GB in there but you're running a non PAE kernel as it's a weird figure but, then again, with the GB/GiB maths I could be wrong.

*Depends whether you count using 1024 and the like so the 3.5 and 3.4 you see are equivalent sorry, I can't ever recall enough to explain it clearly.
 
Old 12-25-2015, 03:15 PM   #3
Emerson
LQ Guru
 
Registered: Nov 2004
Location: Saint Amant, Acadiana
Distribution: Gentoo ~arch
Posts: 6,316

Rep: Reputation: Disabled
4 GB installed, some is used by integrated graphics perhaps. You have plenty of free memory, I'd say adding more RAM will not improve the performance of your computer.
 
Old 12-25-2015, 03:17 PM   #4
273
LQ Addict
 
Registered: Dec 2011
Location: UK
Distribution: Debian Sid AMD64, Raspbian Wheezy, various VMs
Posts: 7,367

Rep: Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258
Quote:
Originally Posted by Emerson View Post
4 GB installed, some is used by integrated graphics perhaps. You have plenty of free memory, I'd say adding more RAM will not improve the performance of your computer.
Good call, could well be, I had forgotten about that despite typing on a machine with integrated graphics.
 
Old 12-25-2015, 05:36 PM   #5
Gregg Bell
Senior Member
 
Registered: Mar 2014
Location: Illinois
Distribution: Xubuntu
Posts: 1,868

Original Poster
Rep: Reputation: 162Reputation: 162
Quote:
Originally Posted by 273 View Post
You seem to have 3.4GB (or, perhaps 3.5GiB*) of RAM showing as available which suggests to me you've really got 4GB in there but you're running a non PAE kernel as it's a weird figure but, then again, with the GB/GiB maths I could be wrong.

*Depends whether you count using 1024 and the like so the 3.5 and 3.4 you see are equivalent sorry, I can't ever recall enough to explain it clearly.
Thanks 273. I thought the way the numbers broke down was weird too.
 
Old 12-25-2015, 05:40 PM   #6
Gregg Bell
Senior Member
 
Registered: Mar 2014
Location: Illinois
Distribution: Xubuntu
Posts: 1,868

Original Poster
Rep: Reputation: 162Reputation: 162
Quote:
Originally Posted by Emerson View Post
4 GB installed, some is used by integrated graphics perhaps. You have plenty of free memory, I'd say adding more RAM will not improve the performance of your computer.
Thanks Emerson but help me understand it a bit. So "free" memory basically equates to "unused" or "in reserve" memory? So since I've got so much free memory it would make no sense to install more RAM? So in other words all that extra free memory would be pointless?

Which leads to another question: How much RAM memory could I add to this computer?
 
Old 12-25-2015, 05:50 PM   #7
273
LQ Addict
 
Registered: Dec 2011
Location: UK
Distribution: Debian Sid AMD64, Raspbian Wheezy, various VMs
Posts: 7,367

Rep: Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258Reputation: 2258
Quote:
Originally Posted by Gregg Bell View Post
Thanks Emerson but help me understand it a bit. So "free" memory basically equates to "unused" or "in reserve" memory? So since I've got so much free memory it would make no sense to install more RAM? So in other words all that extra free memory would be pointless?

Which leads to another question: How much RAM memory could I add to this computer?
You surmise correctly -- you've too much* RAM already .
To find out how much you could install you would need to look up the specifications of your motherboard and CPU. I'm also interested as to what you see when you type:
Code:
uname -a

*Sorry, just a joke, I dare say with applications open you could use all that.
 
Old 12-25-2015, 05:58 PM   #8
ardvark71
LQ Veteran
 
Registered: Feb 2015
Location: Oregon, USA
Distribution: Lubuntu 14.04, Windows Vista
Posts: 6,277
Blog Entries: 3

Rep: Reputation: 839Reputation: 839Reputation: 839Reputation: 839Reputation: 839Reputation: 839Reputation: 839
Quote:
Originally Posted by Gregg Bell View Post
So "free" memory basically equates to "unused" or "in reserve" memory? So since I've got so much free memory it would make no sense to install more RAM? So in other words all that extra free memory would be pointless?
Hi...

Yes, that's correct. Free memory equates to the "unused" amount, waiting to be used, if needed. Purchasing more memory would only be beneficial if you find yourself consistently maxing out the 4 GB's you already have. If you're not doing that and memory usage stays consistently around what your attached thumbnail shows, then you don't need to purchase additional modules.

That might change if you install a heavier OS.

Quote:
Originally Posted by Gregg Bell View Post
Which leads to another question: How much RAM memory could I add to this computer?
For that, we would need to know the brand and model (and model number) of the motherboard and/or system you're using. Let us know and we'll try to give you an answer.

Merry Christmas!

Last edited by ardvark71; 12-25-2015 at 06:01 PM. Reason: Changed wording.
 
1 members found this post helpful.
Old 12-25-2015, 07:20 PM   #9
Gregg Bell
Senior Member
 
Registered: Mar 2014
Location: Illinois
Distribution: Xubuntu
Posts: 1,868

Original Poster
Rep: Reputation: 162Reputation: 162
Quote:
Originally Posted by ardvark71 View Post
Hi...

Yes, that's correct. Free memory equates to the "unused" amount, waiting to be used, if needed. Purchasing more memory would only be beneficial if you find yourself consistently maxing out the 4 GB's you already have. If you're not doing that and memory usage stays consistently around what your attached thumbnail shows, then you don't need to purchase additional modules.

That might change if you install a heavier OS.



For that, we would need to know the brand and model (and model number) of the motherboard and/or system you're using. Let us know and we'll try to give you an answer.

Merry Christmas!
Merry Christmas, Ardvark!

Thanks for the clarification. If I start getting closer to running out of free memory I'll check that info out and report back but for now I'm satisfied that things are good as is.
 
Old 12-25-2015, 09:44 PM   #10
ardvark71
LQ Veteran
 
Registered: Feb 2015
Location: Oregon, USA
Distribution: Lubuntu 14.04, Windows Vista
Posts: 6,277
Blog Entries: 3

Rep: Reputation: 839Reputation: 839Reputation: 839Reputation: 839Reputation: 839Reputation: 839Reputation: 839
Quote:
Originally Posted by Gregg Bell View Post
Thanks for the clarification. If I start getting closer to running out of free memory I'll check that info out and report back but for now I'm satisfied that things are good as is.
You're welcome, sounds good!

Regards...
 
Old 12-25-2015, 11:24 PM   #11
Tim Abracadabra
Member
 
Registered: May 2014
Location: USA, Wherever I may Roam
Distribution: debian 9.8 w/GNOME and KDE dual boot w/Win 10.| debian 7.11 w/Xfce, LFS 7.9, + Multi-boot w/Windows7
Posts: 122

Rep: Reputation: Disabled
Just to add in case it may help in understanding top memory stats.
While kinda cute, in a basic manner, explains RAM and swap usage.

http://www.linuxatemyram.com/

Hope that helps.
Happy Holidays and Merry Christmas

All the best,
Tim
 
Old 01-06-2016, 01:41 PM   #12
Gregg Bell
Senior Member
 
Registered: Mar 2014
Location: Illinois
Distribution: Xubuntu
Posts: 1,868

Original Poster
Rep: Reputation: 162Reputation: 162
Quote:
Originally Posted by Tim Abracadabra View Post
Just to add in case it may help in understanding top memory stats.
While kinda cute, in a basic manner, explains RAM and swap usage.

http://www.linuxatemyram.com/

Hope that helps.
Happy Holidays and Merry Christmas

All the best,
Tim
Thanks Tim. LOL Yeah, blame it on the ravenous penguin.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
[SOLVED] understanding the role of OS and Application in usage of RAM rohitchauhan Linux - General 7 01-30-2014 06:23 AM
Finding out what RAM chip needed to upgrade from 2GB to 4GB RAM. farmerluk Linux - Hardware 4 11-17-2011 12:02 PM
Why size of swap space is 2x of RAM??? Why not 1.5x of RAM or 2.5x of RAM??? Saurav Ghosh Linux - Newbie 7 11-01-2011 03:49 AM
FC 6 - missing RAM - Intel S5000PSL Board - 16GB RAM meofcourse Linux - Hardware 11 12-20-2007 03:21 AM
Win98SE Pentium166MMX/64MB RAM vs Linux AthlonXP+ 3000/512MB RAM : Lucent LT WinModem t3gah Linux - Software 2 04-22-2005 01:01 PM

LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie

All times are GMT -5. The time now is 08:21 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration