a cache stores temporary data nearby so that it can be retrieved much more quickly than fetching it from the real backing store (disk, network), or recalculating some result all over again

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1answer
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how clear/clean unneeded files or cache for my customized distro

Can you help me to find out how do I clear the Cache files or unnecessary or lib that can be updated on new ubuntu install i used "ubuntu 12.10" this my top size file/folder list: 4380MiB /usr ...
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3answers
352 views

Making up cacher server for older ubuntu releases

we have ubuntu 10.04 and ubuntu 10.10 operating systems. However our software works only in these versions. We are facing some problems in the new versions 12.04 (LTS) we are working in it. But ...
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1answer
1k views

Can we install Xcache 2.0 or 3 on Ubuntu 12.04?

Xcache have already reached the version 3.0. But in Ubuntu 12.04, we still have version 1. How can we install Xcache 2 or 3 in Ubuntu 12.04?
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2answers
2k views

Install deb package with all dependencies in same folder?

I need to install multiple deb files of same software from apt cache in another ubuntu installation. For example, I have all deb files of vlc in same folder(/var/cache/apt/archives). I need to ...
6
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2answers
641 views

Tell the kernel to strongly cache a particular directory

This question is a rephrasing of Optimizing EXT4 performance. I have a directory that contains build files, most very small, but totaling 5.6G. I usually access the same subset of files (some ...
0
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1answer
149 views

Install packages in cache automatically

I have restored all my packages to cache using aptoncd. Now I want to reinstall the packages without having to choose each package. Is there any way?
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3answers
3k views

How do I tell what type of CPU cache is in my laptop?

Is there an application for Ubuntu that could tell me details about CPU, CPU cache memory, memory hierarchy, cache architecture implemented in my system, cpu cache size, cpu cache, access cycle and ...
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1answer
228 views

Dump video data from RAM DISK to the HARD DISK?

This is the story: Some online video streaming sites like www.putlocker.com won't allow Adobe Flash Player to cache the streaming videos on your Hard Disk, so the users can't watch them offline. ...
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3answers
715 views

How can I use up all RAM by cache?

I am using Ubuntu 12.10 with 4G RAM. I have changed SWAP to 10 and installed Preload. However, My system only use less than 1G RAM to cache and It remains more than 2G RAM standby. How can I use up ...
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3answers
2k views

What is the write-mode policy that is used in Ubuntu?

Is there anyway to see whether Ubuntu uses write through or write back policy? I know that write back is much better, but when I write a program in C to test the cache, it appears that Ubuntu uses ...
3
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1answer
670 views

KVM host: Ubuntu 12.04 3.2 Kernel showing incorrect “cache size” in cpuinfo?

2x Xeon E5620 . 16 Cores altogether. /proc/cpuinfo shows cache is only @ 4096kb According to intel this should have 12MB of "smart cache". Doing searched for E5620 and CPUinfo shows the correct ...
0
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1answer
840 views

Will my nginx reverse proxy cache work?

I have a website running Nginx and Apache Apache deals with PHP files, and Nginx the html static files We have now changed the site so there are no html static files, only PHP files and this has ...
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1answer
237 views

How can I stop Nautilus from caching thumbnails?

In Nautilus, I want to see thumbnails on the fly, but I don't want them to be cached. Any way to do this?
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2answers
7k views

Clearing firefox's cache [duplicate]

Possible Duplicate: How can I get the menu bar in firefox? I have ubuntu installed on my mac with VirutalBox. Firefox is installed and I want to clear the cache of Firefox. I don't find any ...
0
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2answers
839 views

Are the deb files stored in /var/cache important?

I have nearly 800 MB of .deb files in cache folder .... I went through other posts related to this query but I wan not convinced. Should I just save all theses files somewhere ? I guess it won't ...
0
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2answers
7k views

How to change default location of Thunderbird cache directory?

Mozilla Firefox has the key browser.cache.parent_directory for this but in Thunderbird I couldn't find it.
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1answer
175 views

Why does Zeitgeist use ~/.local/share/ instead of ~/.cache?

I have noticed that many applications like Chromium, MC, and Ubuntu One use one common ~/.cache directory, so why doesn't Zeitgeist?
0
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1answer
1k views

Why is downloading repository updates so slow?

Okay, I have Ubuntu version 11.10 and I wish to upgrade to 12.04. Whenever I open the Update Manager and click "Check," it has taken literally over an hour to download the cache. I cannot update ...
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4answers
44k views

How do I clean or disable the memory cache?

After the system starts, in a few minutes my memory cache fills up and it starts using the swap. Here's a screenshot of /proc/meminfo. However, if I can disable this process / clean the cache once ...
4
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1answer
116 views

Is it possible to recover unflushed data from the disk/page cache?

In Ubuntu, I move some file to a USB stick, using mv dir/file /media/7EXXX/swap/. When finishing this, I forget to "safely remove" before physically removing usb stick. Now, the file is not shown in ...
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1answer
1k views

Packages (gstreamer, etc.) cause Broken Cache

When installing "Teamviewerx64", a package error occurs. Output of the error: Title: Package operation failed In a nutshell: The installation or removal of a software package failed. Details: ...
2
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1answer
4k views

How to tell if squid-deb-proxy is working?

I've got squid-deb-proxy, avahi-tools, and squid-deb-proxy-client installed on a gateway VM running 12.04 Server, and squid-deb-proxy-client installed on two client VMs running Lubuntu and Xubuntu ...
0
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1answer
273 views

Can Squid be used to cache updates for other distros?

Specifically, if I have a small virtual LAN with multiple VMs of each different distro - say three CentOS VMs, two Debian VMs, and assorted Ubuntu VMs - can Squid safely cache the updates for each ...
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1answer
51 views

Re-install a set of deb files on another machine without re-downloading

I made a setup for development, and it downloaded a large set of .deb files. Now, I want to re-do this for a presentation, but I do not want to re-download the 400 files live. That would take too ...
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2answers
2k views

Can an external flash or hard drive be used to boost performance, similar to Windows' ReadyBoost?

I have a number of spare external hard disk drives lying about the place and I was wondering if there is any practical way of using an external hard drive or USB flash memory drive to boost ...
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6answers
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Errors in dmesg - Test WP failed, assume Write Enabled [duplicate]

I'm experiencing some problems with drive cache and I don't know what's causing these problems. This is my dmesg: [11690.011238] sd 6:0:0:0: [sdb] Asking for cache data failed [11690.011248] sd ...
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2answers
6k views

Can I copy large files faster without using the file cache?

After adding the preload package, my applications seem to speed up but if I copy a large file, the file cache grows by more than double the size of the file. By transferring a single 3-4 GB ...
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0answers
779 views

How to I enable NFS caching for mounts made in /etc/auto.master [closed]

My /etc/auto.master is looking like this: /usr/groups yp:auto.groups --timeout=3600 /home yp:auto.home --timeout=3600 /nistest yp:auto.misc --timeout=3600 /misc yp:auto.misc --timeout=3600 I want ...
0
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1answer
142 views

How can I set up URL Caching in Ubuntu?

I'd like to set up Linux to cache some commonly requested URLs so that it doesn't have to go out to the net to get them every time. This would be a system-wide URL cache, not just in a particular ...
3
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1answer
197 views

add packages to apt's partial archives

I'm experimenting with a possible answer for add packages to squid-deb-proxy cache, wherein I am trying to add files downloaded on a different network to the squid-deb-proxy cache. It occurred to me ...
9
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2answers
1k views

How to add packages to a squid-deb-proxy cache?

To save bandwidth and data on my Internet plan, I have installed squid-deb-proxy on a desktop, and the client on it and a few other machines I've got. However, based on the post that put me onto this ...
3
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4answers
3k views

What Updated Web Cache Servers are available (Caching HTTP Proxy)

I am going to install Ubuntu 11.10 Server (And soon 12.04 Server) and wanted to know what Web Cache servers (Caching HTTP proxy) come with Ubuntu 11.10/12.04 to improve performance and reduce ...
56
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5answers
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Drawbacks of using preload? Why isn't it included by default?

I would like to know what are the drawbacks of using preload? If there would be no downside, preload would be enabled by default, so I guess there are some. Okay you need a bit more RAM, but most ...
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3answers
19k views

How do I increase cache size in Chrome?

is there any way to increase the cache size of google chrome in ubuntu 11.10 so that frequently visited pages load faster, im using a very-slow internet connection so i badly need this
58
votes
3answers
44k views

Is it okay to delete ~/.cache?

When I use disk usage analyzer and scan my home folder .cache always shows up with a decent bit of things in it. Would it be okay for me to delete the contents of this folder or would it damage ...
0
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3answers
5k views

youtube video location in firefox

As I moved to newer version of firefox-8.0 I lost the location firefox use to store flash videos previously it used to be in /tmp/FLASH****, but now it's not there even in ...
15
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2answers
14k views

How to clean var/cache/apt in a way that it leaves only the latest versions of each package

I want to know a way to clean the var/cache/apt folder in a way that it only leaves the latest version of a package if it has several versions or it leaves a package if it is the only one of that ...
4
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1answer
2k views

Retrieve Google Chrome Ubuntu favicon

Where the favicon .ico file is stored in Ubuntu 11.10? How can I extract the .ico file from the chrome cache?
2
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2answers
3k views

Is there a difference between SWAP and Cache memory?

I installed the indicator-multiload 0.2-0ubuntu1 from the software center. (It's very similar to the gnome panel indicator showing memory and CPU graphs) When I click on the Unity panel which shows ...
0
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1answer
487 views

Cache Memory and fglrx driver slows computer

When ever my Cache memory gets extremely high, my entire computer slows down. Windows slow to load, and there's lagging on the mouse-overs for everything. The only way I can restore everything is by ...
5
votes
1answer
4k views

How to move the user cache directory [~/.cache] out of the /home directory to another partition

The .cache directory is full of volatile, non-essential files. I would like to move it to a more appropriate partition, i.e. faster and not backed up. I believe that ~/.pam_environment file is ...
5
votes
1answer
1k views

Safe to remove…?

I'm trying to customize a LiveCD, but I can't manage to fit it on a normal CD. So I investigated, and came across a few files of which I don't know if it's safe to remove them. Maybe you can help me ...
3
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2answers
993 views

Does seeding torrents affect the harddisk RAM caching?

I've downloaded a lot of torrent files and while I'm seeding them, I've noticed that very often when I start the browser it's slow and the hard disk activity indicator is on. Usually when I start a ...
4
votes
1answer
238 views

When running locally, does Juju use the host machine's APT cache?

When juju fetches packages for a unit, does it make use of the host system's APT cache? I'm asking this because in my case, bandwidth is limited and I am doing some charm development. It is not ...
9
votes
3answers
23k views

Why is the cache in my memory always full?

I have 6GB RAM, i5 2.4GHZ Processor running Ubuntu 11.10. I partitioned my HD so that I have 8GB swap. When streaming online or opening several tabs in Chromium I soon have 4GB Memory in the cache. ...
3
votes
1answer
646 views

How to get apt to make files in /var/cache/apt/archives always world-readable?

I want the files in /var/cache/apt/archives to always have read permissions for everyone. That is, whenever apt downloads a new file into this directory, it should make it world-readable. This is not ...
3
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2answers
800 views

Possible to use ureadahead to cache frequently used programs?

EDIT I kinda answered my question with the help of this. The only question remaining is how to make the changes permanently stay in the pack-file and not be lost on reprofile. I'll leave the question ...
3
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3answers
16k views

Where does my browser store temporary data?

How can one look at content of temporary cache of his computer ? After something not actually downloaded (just pressing the button to open data not download) to any directory, this data temporarily ...
2
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1answer
153 views

Memory cache still load, after close programs

It's show on system indicator, I found solution in ubuntuforum to use command sudo echo 3 | sudo tee /proc/sys/vm/drop_caches It's work, but why my ubuntu not handle by itself?
8
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3answers
2k views

Why does /var/cache/apt/archives keep deleting files

I normally download all .deb packages and just copy the packages from /var/cache/apt/archives directory to the rest of the computers, saving me to have to download all the updates and programs again. ...