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

learn more… | top users | synonyms

0
votes
2answers
164 views

How can I clean my software caches from the command line?

In the upgrade from 12.10 to 13.04 I lost the ability to use Ubuntu Tweak's Janitor to clean caches so I would like to know how to do it from the command line.
0
votes
1answer
687 views

How can i enable adobe flash player to use local cache

As the title says: using ubuntu 12.04LTS, how can i enable adobe flash player to use local cache?
0
votes
1answer
987 views

dump cache of bind dns

when I do rndc dumpdb then this file has no new cache dumped (18.04 was yesterday, I don't know how I did this dump) and looks like: > ; ; Start view _default ; ; ; Cache dump of view '_default' ...
4
votes
1answer
2k views

What is icon-theme.cache?

When I run the following command on my Lubuntu 12.10 [11:09 PM] ~ $ find /usr/share/icons/ -iname icon-theme.cache -type f I get the following (after adding the last modified date and size): ...
0
votes
1answer
706 views

how to check if cache is working

is there a way to check if disk cache is working on a regular sata disk? i see "asking for disk cache failed" error messages, but discovered my laptop has a 1gb solid state drive without a ...
2
votes
0answers
257 views

How can I make squid-deb-proxy work with proxy authentication?

I have squid-deb-proxy working fine without a problem without apt proxy authentication. However when I add a proxy file to /etc/apt/apt.conf.d and put in my proxy authentication inside this file. ...
1
vote
1answer
2k views

How do I flush out the DNS resolver cache? [duplicate]

On Microsoft Windows OS, at the command prompt, I issue the command ipconfig /flushdns to flush out the DNS resolver cache. On Ubuntu 12.10, what is the corresponding command?
0
votes
0answers
26 views

how do i install ubuntu on ssd cache and maintain windows acceleration? [duplicate]

I hope this is the right place to ask this question. I just bought a lenovo u310 preinstalled with windows 7. It has a 32 GB ssd cache drive and a 500 GB hard drive. I want to install Ubuntu root ...
3
votes
0answers
43 views

What is the optimal configuration for a laptop with a 24GB SSD cache? [duplicate]

I have a Sony Vaio ultrabook that contains a 24GB ssd drive and a 750GB hard disk. What is the optimal configuration for installing ubuntu on this to get the most out of the hardware? Would I be ...
1
vote
0answers
112 views

How to remove caching of NFS shares on local disk

My desktop don't have an internal hard drive. I installed Ubuntu in a crappy old portable hard disk which is very slow. I mounted the home folder of my laptop to the desktop using NFS. My desktop and ...
37
votes
4answers
17k views

How do I install and use flashcache/bcache to cache HDD to SSD?

I want to know if there is anyone who has tried installing and running their kernel built with flashcache or bcache for SSD caching? How did you manage to do it?
4
votes
1answer
4k views

Can I cache an mdadm raid with an ssd?

I have a 1TB array set up in raid 1 using mdadm on Ubuntu 8, to store mission-critical files. I'd like to speed up read/write, especially for large files by caching to an SSD. Is this possible? Does ...
0
votes
2answers
299 views

Configuring a HTTP and HTTPS web accelerator using Varnish

I have installed and configured varnish on my new server. The server is currently working for http traffic. I would like to also forward SSL traffic to my webserver. It is not necessary to cache this ...
1
vote
0answers
119 views

Disk cache is sometimes dropped/erased

I have a memory/cpu monitor running, and sometimes see the graph line for “cached memory” drop, for no apparent reason. Earlier today Cache memory was at about 4.8GB but then dropped in two steps ( a ...
1
vote
1answer
1k views

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 ...
1
vote
3answers
245 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 ...
0
votes
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?
2
votes
1answer
1k 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
votes
2answers
549 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
votes
1answer
81 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?
6
votes
3answers
2k 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 ...
1
vote
1answer
186 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. ...
0
votes
3answers
583 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 ...
2
votes
3answers
945 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
votes
1answer
521 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
votes
1answer
698 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 ...
1
vote
1answer
180 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?
0
votes
2answers
4k 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
votes
2answers
624 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 ...
17
votes
5answers
19k views

How do I use zRam?

I installed zRam as described on webupd8.org. I installed it from the terminal. Is that all I have to do or do I have to do some configuration or something? Does the zram-enabler do everything by ...
0
votes
2answers
4k 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.
2
votes
1answer
158 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
votes
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 ...
8
votes
2answers
20k 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
votes
1answer
104 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 ...
0
votes
1answer
975 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
votes
1answer
3k 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
votes
1answer
197 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 ...
1
vote
1answer
49 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 ...
5
votes
2answers
978 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 ...
10
votes
6answers
17k views

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 ...
13
votes
2answers
4k 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 ...
1
vote
0answers
663 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
votes
1answer
107 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
votes
1answer
176 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
votes
2answers
855 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 ...
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
26k 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 ...