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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3
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1answer
488 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
634 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
8k 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 ...
2
votes
1answer
145 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
577 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
692 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
872 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 ...
6
votes
2answers
5k 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
342 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
349 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
697 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
786 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 ...
10
votes
2answers
5k 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 ...
19
votes
2answers
5k 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 ...
9
votes
5answers
21k 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
778 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
546 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
465 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 ...