0
votes
1answer
35 views

responsiveness drops drastically when RAM get's full after upgrading from 13.04

Since I've upgraded from ubuntu 13.04 to 14.04 (and before 13.10) my system get's to it's knees when the memory get's full and has to start swaping.. Of course I know that a performance penalty ...
2
votes
3answers
480 views

Why does my system use so much cache?

Previously, on my desktop computer running Ubuntu 14.04, I had 4GB RAM, which I thought should be plenty. However, after being on for a while, my computer would seem to get slow. I have a system ...
2
votes
1answer
306 views

zram vs zswap vs zcache Ultimate guide: when to use which one

What the hell are they? how are they different (I've written my understanding in an answer below) In the Zswap system, when a page is evicted from the zswap to the actual swap is it stored in a ...
1
vote
3answers
136 views

Ubuntu Frozen every time when Memory usage over 80%

Ubuntu Frozen every time when Memory usage over 80%, It seems that the system hangs due to a load of disk IO - the screen is frozen and the only thing I can see is the indicator LED of disk keeping ...
1
vote
0answers
64 views

Performance goes to Zero when RAM cache is full [closed]

This isn't a straightforward question as I've read that cached RAM will be released when needed. I have the hunch that this is not happening on my system (or something else is skrewed). I have a AMD ...
0
votes
0answers
109 views

Ubuntu 12.04 Sever is running slow and not using full ram

I have a ubuntu VM of 12.04 server virsion and it is running on centos. VM have 8GB of RAM and 1 core processor for it. I amd running following application on it hadoop 1.0.4 hbase-0.94.12 ...
1
vote
1answer
67 views

Help with ram usage

I have a dual boot laptop with 512 MB RAM running Windows XP/Xubuntu. I try to load student.portal.chalmers.se (a huge bloat site) in Firefox. On XP, I can load the site without any swapping, but ...
1
vote
1answer
4k views

Ubuntu 12.04 LTS Versus Ubuntu 13.10 [duplicate]

I'm new to Ubuntu and I'm not sure which version to install. Which offers better performance? Which would you recomend? Thanks in advance.
0
votes
1answer
63 views

Ubuntu - One process running - Tons of memory used [duplicate]

I've installed Ubuntu using the Microsoft Windows Installer, and it's running pretty slow. I've got 3.8 GB ram on my computer, and by running free -m I'm getting the following results : ...
0
votes
1answer
54 views

Give a programm an unconstrained amount of RAM

I am running a Linux application, not WINE. How can I find out if it has any memory constraints, if any at all? If it does have memory constraints how can I increase it? I have 12GB of system RAM. ...
0
votes
1answer
449 views

Graphics performance reduced

I've installed Ubuntu recently. I love gaming on PC and I am trying out Ubuntu. But... I've been having a problem. My graphics card performance had been reduced in this OS. I used to run games in ...
1
vote
2answers
381 views

RAM doubled from 8 gb to 16 gb, now ubuntu 13.04 is SO SLOW!

I upgraded my RAM amount from 8 GB to 16 GB tonight. After the upgrade Ubuntu takes forever to boot and doing anything on the OS is hideously slow now. You can click on a menu and it will take ...
0
votes
1answer
474 views

can my 2 GB sd card be used as ram like in windows 7? [duplicate]

I'm trying to increase the ram on my old computer with a 2 GB sd card. You can configure Windows to use an SD card like RAM and I'm wondering if Ubuntu has that same ability.
0
votes
1answer
347 views

Why is find running here?

I noticed very high IOwait, even copying/pasting from NetBeans to Firefox was taking several minutes and hanging for a long while. In powertop, I noticed: Usage Events/s Category ...
-1
votes
1answer
132 views

Is this Ram usage normal?

My system is Ubuntu 13.04 64 bit + Unity and it uses ~600mb with no other processes-apps open and with preload 900mb, just the core system. Is this the expected amount? It seems a bit steep to me but ...
4
votes
2answers
770 views

2 GB Ram, but Ubuntu runs slowly and hangs if doing too much

I think my system more than meets the minimum/recommended requirements for Ubuntu, but its still running slowly. Especially when I try to multitask by having 4-6 windows open, then it becomes quite ...
12
votes
4answers
3k views

How to fully utilize RAM to increase overall system performance

I have a low profile machine but with a lot of fast RAM, 4 Gb, which is really an amount of memory that i probably will never use, not even an half, since i just use this machine for coding and ...
2
votes
1answer
1k views

Why does whoopsie increasingly take more CPU?

I am running Ubuntu 12.04 LTS and I've been following whoopsie with the top program and noticed something strange. In the afternoon the daemon process was only using up to 2% of CPU power. But ...
2
votes
1answer
142 views

Need more RAM?? Running VMmachine + ubuntu

So I looked but im running ubuntu in vm machine and its running at a snails pace and I installed the 64bit ver. Running windows 7 64bit the down side is that I only have 2GB of ram ...
2
votes
2answers
4k views

Ubuntu swappiness

I have a laptop with 4 GB RAM and i3 processor. It runs very fast when I use windows, but it keeps slowing down on my Ubuntu when I use it continuously. I noticed that 500mb+ swap is getting used even ...
1
vote
1answer
2k views

Best Ubuntu version for Virtualbox host

What is the best version to use as a Virtualbox host OS? Is it 12.04, or 9.04? I get the notion that an older system runs faster. Is this true? I especially have to consider the amount of RAM ...
2
votes
3answers
576 views

How to speed up installation?

I have an Acer 4736z with 2gb Ram and ubuntu 12.04 is running too slow for my standards. I would like to know if I am running useless processes that I am not aware of and remove packages I will never ...
4
votes
1answer
5k views

Good way to run Java and Eclipse from a ramdisk

It is often suggested to me that to improve the performance of the Eclipse development environment, that I should move the Java JDK/JVM (and possibly Eclipse) to a Ramdisk. I know that the Ubuntu has ...
1
vote
3answers
578 views

Disk I/O makes desktop unusable. System consumes too much memory

I have a long-term problem with my Acer TravelMate 3002WTMi (Pentium-M 1.73Ghz, 512 MB RAM) and Xubuntu 11.10. Whenever load increases machine tends to slow down to the point that it's totally ...
1
vote
1answer
213 views

Does removing extra workspaces in Unity2d impact CPU or RAM performance?

I never used workspaces, so I have set number of workspaces to 1. After restarting, unity seems to be kinda snappier. What`s in theory?
2
votes
1answer
730 views

Which of these services can I safely disable?

Before install stuff on my server I wanted to trim down unnecessary services. etc. Here's the top: 615 ubuntu 20 0 26948 7384 1648 S 0.0 1.2 0:00.39 bash ...
2
votes
4answers
1k views

Would I benefit from reducing, or increasing swappiness?

I've read a few articles now about changing the swappiness level on Ubuntu to possibly increase performance. But I'm very unfamiliar with how swappiness works, would I benefit from increasing, or ...