Skip to main content

Disabling compcache for good

Image
By
If a Ubuntu is installe from a CD or DVD chances are that along with the swap disk which physically exists on the hard drive Ubuntu also uses a RAM SWAP. This is a most annoying behavior because it leads to serious slowdowns and locks ups of the system.
If you are one of those poor souls whose Firefox freezes up regularly after prolonged use even when not too many tabs are open then you are a victim of the Compcache. Even though it is boon for Live CDs it becomes the unwanted child in an installed Linux distribution.

What do Compcache do ?
I quote the webpage dedicated to Compcache (https://wiki.ubuntu.com/Compcache)
"Compcache provides a possibility of using parts of the memory as virtual compressed swapdevice." 

So Compcache creates a virtual drive in memory called the ramzswapfound at /dev/ramzswap0 and makes programs trick into storing their swap data there.
This is not at all needed if a dedicated swap partition exists in a system. It interferes with the swapping mechanism of the kernel and causes slowdowns.

To see if Compcache is doing its stuff type the fgollowing command. It shows what swap devices are on.

$ swapon -s

If there is an output like


Filename                Type        Size    Used    Priority
/dev/sda9                               partition    2104472    358796    -1
/dev/ramzswap0                          partition       1299996 186680  100

then the RAM SWAP in ON.

To disable RAM SWAP temporarily do the following --

$ swapoff /dev/ramzswap0

Now see the improvement in the performance of the PC.

To turn off Compcache permanently

$ cd usr/share/initramfs-tools/conf.d/
$ sudo mv compcache old-compcache 

Comments

Post a Comment

Popular posts from this blog

LYRICS OF CHANDRABINDOO

By
___________________________________________________________________ SWEET HEART FROM AAR JAANI NAA(T-SERIES) -- SWEETHEART -- Pratham college-er din ta Aajo thik e mone poRey scene ta Dada didi haath dhorey siNRi tei bose poRey Aamar chokh ta ghorey bon bon bon bon Sweetheart, I am seating alone Sweetheart, for me there is none DhoNk gile chole gelo pratham maas Meye dekhlei feli deergho-shwash DhoNk gile chole gelo pratham maas Meye dekhlei othe nabhishwash Meyera bheeshan smart poRey chhoto mini-skirt Aamar e je sheet korey kon kon kon kon Sweetheart, I am seating alone Sweetheart, for me there is none Taarporey kete gelo maas chaar Fuse holo je kato future Bandhura purse khule eke oke taake tole Aamar pran ta korey chon mon chon mon Sweetheart, I am seating alone Sweetheart, for me there is none Ekdin lawn theke beriye Ek tanayaar dike taakiye Hawt korey ki je holo magaj ta ghurey gelo Taar kaaner saamne kori ghyan ghyan ghyan ghyan Sweetheart, I am seating alone Sweethea...
2 comments
Read more

Fastest way to send multiple drafts from gmail

By
People claim that the fastest way to send multiple email drafts is to use Gmail IMAP with email client like Outlook or Evolution or Thunderbird. But I have found this is not true. Because Thunderbird and Evolution etc. email clients treats the drafts as emails still to be edited. So it is not just simple select all and hit send. Each email draft has to be opened and sent separately. That is a lot of clicks and mouse movements, wasting precious time and energy. I have a better solution which involves minimum keystrokes and mouse usage. Efficiency booster technique for sending emails. If someone is feeling adventurous and want to try it from the Gmail interface itself, here's how to do it in the fastest possible manner. It involves using the mouse once. Select the first draft. Gmail would open a new email box and put the cursor inside the box to write. Press TAB once to go the Send button. Press ENTER to send. Now Gmail sends it and the box is gone but the highlight goes to the last...
2 comments
Read more

Changing the font size of section headings in LaTex

By
You have several ways to do so: 1.- A direct redefinition of \section: \makeatletter \renewcommand\section{\@startsection{section}{1}{\z@}%                                   {-3.5ex \@plus -1ex \@minus -.2ex}%                                   {2.3ex \@plus.2ex}%                                   {\normalfont\large\bfseries}} \makeatother 2.- By means of the titlesec package: \usepackage{titlesec} \titleformat{\section}{\large\bfseries}{\thesection}{1em}{} 3.- By means of the sectsty package: \usepackage{sectsty} \sectionfont{\large} source : http://www.latex-community.org/forum/viewtopic.php?f=4&t=3245   Now, I would explain the titlesec package a bit more (because it seems easier to me and...
Post a Comment
Read more