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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2
votes
4answers
2k 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 ...
45
votes
5answers
14k views

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 ...
6
votes
3answers
15k 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
30
votes
3answers
27k 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
votes
3answers
4k 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 ...
1
vote
0answers
370 views

Auto save all visited pages in Firefox [closed]

So is there any add-on which automatically saves all the pages I visit in some cache, so that I can access them in offline mode also. I am using Firefox-8.0 and Ubuntu-10.10 .
11
votes
2answers
12k 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
votes
1answer
1k 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
votes
2answers
2k 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
votes
1answer
455 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
3k 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
855 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 ...
2
votes
2answers
763 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
203 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 ...
5
votes
4answers
17k 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
537 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 ...
2
votes
2answers
673 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
votes
3answers
10k 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
votes
1answer
149 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?
5
votes
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. ...
5
votes
1answer
614 views

Does dnscache really improve the surfing speed?

I have installed dnscache (dnscache-run) from Ubuntu repositories and I have increased the CACHESIZE and DATALIMIT to 256MB (268435456). Today I have tested it with one domain: google.es. I have ...
4
votes
1answer
708 views

How to preload programs?

What I want to do is open some programs in the boot sequence so Ubuntu loads them into memory. I'm already using the preload package and it's not helping in that part. Thanks.
1
vote
1answer
920 views

Apt-get ignoring a repo even if I clear the cache

I'm trying to get the ubuntugis repo to install on a server and I keep getting the line: Ign http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu/ lucid/main Translation-en_GB when I do an ...
8
votes
3answers
6k views

Computer freezing on almost full RAM, possibly disk cache problem

The problem I think is somewhat similar to this thread. It doesn't matter if I have swap enabled or disabled, whenever the real used RAM amount starts going close to maximum and there is almost no ...
3
votes
3answers
1k views

Is there a desktop-wide privacy mode?

With Zeitgeist now tracking everything I really think we need a privacy mode like the one Firefox offers. There is a ridiculous amount of history and caches being stored in Ubuntu from thumbnails to ...
1
vote
1answer
354 views

How do I change a stubborn start-here icon?

I've been trying for a while now to change the e start-here icon that I have from the Elementary icon theme. I've replaced every start-here icon in the theme's folder, but I was told that Ubuntu also ...
0
votes
0answers
350 views

Cached Remote Filesystem mount? [duplicate]

Possible Duplicate: How can I cache NFS shares on a local disk? I have a large directory of pictures on a Debian server that I'd like to frequently access and update on my Ubuntu (Maverick) ...
7
votes
2answers
735 views

Get flash drive to cache disk reads to primary partition

Basically I'm looking for a way to mimic Windows' ReadyBoost. I asked this question on Unix.SE to get an idea of whether this was even possible and it seems like it is. Appparently there is a cachefs ...
0
votes
1answer
837 views

How can I change the cache mode of an USB drive?

I've installed ubuntu on a USB stick, which took about 2 hours. After booting from USB, the system was extreme slow, during write operations. The problem seems to be the cache mode [sda] Assuming ...
11
votes
2answers
6k views

How do I reset the thumbnail cache?

I have a lot of images on my laptop as I work in graphics. On the same system, I also have a folder containing my family pictures. I would like to do two things: Empty the already cached images ...
21
votes
3answers
6k views

What is safe to exclude for a full system backup?

I'm looking for a list which paths/files are safe to exclude for a full system/home backup. Considering that I have a list of installed packages. /home/*/.thumbnails /home/*/.cache ...
3
votes
2answers
1k views

Can I use all my RAM for application data?

I have yet another question about "where is my Linux memory" Question goes: can I use cache for application data? On my laptop I have 1GB ram. Situation after some time of work: browser takes 400MB ...
10
votes
5answers
24k views

Best way to set up DNS caching?

In order to speed up DNS lookups, I want to install a DNS cache or proxy. I can see at least three programs I think will do the job: bind9, pdnsd, or dnsmasq. I would like to make sure that if I ...
8
votes
3answers
845 views

Would there be any negative side-effects of sharing /var/cache/apt/ between two systems?

In the interest of conserving bandwidth, I'm considering mounting a VirtualBox host's /var/cache/apt as /var/cache/apt in the guest. Both host and guest are Ubuntu 10.10 32-bit. Would there be any ...
5
votes
3answers
2k views

How can I disable the prefetch cache?

I run a few Ubuntu servers that have a load of django sites running on them. The sites and the httpd start at boot and after that (apart from me SSHing in to update it or using bzr to update websites) ...
2
votes
2answers
561 views

How to recreate cache for “APTonCD” after cleaning cache through apt-get clean?

I recently had to opt for cleaning my cache through apt-get clean after getting lots of GPG errors during update. But it's created another problem for me since I want to create an "APTonCD" for ...
3
votes
1answer
497 views

What do these apt commands do?

What do these commands do? Acquire::http::No-Cache=True -o Acquire::BrokenProxy=true update Acquire::http::Max-Age "0"
8
votes
3answers
5k views

How to clean caches in my homedir

My home directory is getting huge (100GB plus). When backupping it I notices that there are quite some caches there. Which important caches are there in my homedir and how should I clean them? One ...