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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0
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3 views

Memcached crashing

This is my setup: Flask Python Memcached Memcached Python 3.5 Memcache works fine on the dev server. But when I put it in Apache, I get a segmentation fault. Moreover, Apache spawns a lots of ...
0
votes
1answer
17 views

My external hdd not mounting on ubuntu 16.04 LTS

Heres the error message i get every time i try to mount it via terminal The disk contains an unclean file system (0, 0). Metadata kept in Windows cache, refused to mount. Failed to mount '/dev/sde2': ...
0
votes
1answer
12 views

How do I know the cache-line settings of my Ubuntu 14.04?

I am working on a 32-bit Ubuntu 14.04 machine, and I am asked to provide the "cache-line setting" of my machine. I am wondering can I directly inquire this information from the OS? Or I need to dig ...
0
votes
0answers
15 views

tools for files extraction from squid cache

I need to know how RESTful api works. So I cache traffic from an app to a server using squid proxy. Is there any tool to extract json data (and files) from squid cache? Or... May be I'm missing ...
0
votes
0answers
26 views

fastcgi cache in nginx is not caching the same page for all users

I'm using Ubuntu 14.04 server, and I just found out that fastcgi cache is not caching the same page for everybody. I thought it did. I ran some new PHP GeoIp code that displays the user's country name,...
1
vote
2answers
57 views

Can you empty cached items from memory without needing to close Firefox?

I currently have Firefox set up so that a persistent cache is not stored after closing Firefox. I only have the memory cache enabled which it empties when Firefox is closed. Sometimes I need for ...
0
votes
0answers
16 views

how can I configure server for dns cache for my ISP

I want to configure server for public users to use my dns sever and my server can cache all ip and domain name to better responsibilies
0
votes
0answers
14 views

Write data to USB flash drive directly (write-around)

is it possible to enable writing data directly to flash drive only when it have defined by me in udev-rules by ATTRS{idVendor}? I made rule for this flash in /etc/udev/rules.d/: KERNEL=="sd?[0-9]", ...
26
votes
4answers
14k 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 ...
10
votes
2answers
27k views

How do I correctly enable PHP 5.5's OPCache in Ubuntu 14.04?

I'm setting up a local server to test configurations; it's a clean 14.04 LAMP server, as selected during OS install. If I understand correctly, OPCache comes with PHP 5.5 (php -v confirms this) but ...
3
votes
1answer
57 views

How to disable cache in Firefox?

From this answer I learned previously how to disable the Firefox cache completely, however I have found that in the latest version (don't know when this change was made, but I think rather recently) ...
4
votes
3answers
8k views

No window manager after Ubuntu update (e.g. 13.10 to 14.04)

Machine is a single boot Linux. After upgrading from 13.10 to 14.04 today, my son's account starts without a window manager. He has his desktop icons and can click them but no menu and no launcher. I ...
1
vote
1answer
4k views

Firefox cache2 'doomed' folder

I was recently looking in my Firefox cache as I have made it so that it does not cache: And I found this folder called doomed: /home/arthur-dent/.cache/mozilla/firefox/k29gs42c.default/cache2/...
0
votes
2answers
34 views

What is the meaning of “/.cache/” in a path or directory?

I was looking for a file "file.odt" so I used the find command: sudo find / -name "file.odt" While my computer came up with several paths to a number of copies of the same file, it also came up ...
0
votes
0answers
51 views

How do I setup multiple memcached instances running on different ports?

I am running Ubuntu 15.10 and already have memcached installed on my system. My current project requirement is to run two instances of memcached on the same server but with different ports. I start ...
6
votes
1answer
475 views

Disable filesystem read cache

How can I disable the Linux file system read cache for Ubuntu 12.04? I don't want to only free the actual cache. echo 3 > /proc/sys/vm/drop_caches but disable the read cache completely.
1
vote
0answers
21 views

apt-xapian-index, how to limit its disk usage or safely move it away?

My /var/cache/apt-xapian-index has 4.5GB. I like the synaptic search functionality a lot, but that price is too much for my small SSD... I was thinking what I can do about it, to keep it available ...
0
votes
1answer
8 views

Unable to view search results in the Activities Overview for locations I have previously disabled but now re-enabled in the settings

I just went into Settings > Search > Search Locations, disabled the search results for my home directory and then re-enabled them with the little slider next to the item. However even after re-...
0
votes
1answer
21 views

Merge Chromium and Chrome cache dirs

As the title says, is it possible to point both Chrome and Chromium cache directories to the same directory? I mean, is it a simple link between the two directories enough or it will raise problems?
0
votes
0answers
15 views

squid server configuration issue

I installed the squid3 cache server in Ubuntu sucessfully and I configured squid.conffile (http access allow) and made http proxy ip changes in Firefox browser. Whenever I try to access something in ...
0
votes
0answers
26 views

squid cache not working properly

I installed the squid3 cache server in Ubuntu sucessfully and I configured squid.conffile (http access allow) and made http proxy ip changes in Firefox browser. Whenever I try to access something in ...
0
votes
3answers
154 views

How to get Windows-like caching behavior for USB external drive

The problem: Thunar claims that it's written my files to a thumb drive, then I spend 15 minutes waiting for the drive to unmount. I understand it has to do with the write cache. I hope there's a way ...
0
votes
0answers
12 views

squid caching problem

I installed the squid3 cache server in ubuntu sucessfully and i configured squid.conf file ("http access allow") and made http proxy ip changes in firefox browser. When ever i tried to access some ...
0
votes
0answers
9 views

Cache files from a Windows share

Is there a option to cache files from a Windows share? Branch Cache for Linux/Ubuntu? I would think the best option would be in Samba, but I can't find anything. The Windows Sever would be in the ...
0
votes
0answers
27 views

How to fix init system

I would like to know how to fix systemd when it gives me an error at boot time (such as the welcome to emergency mode error). I've had that problem before and I had to reinstall Ubuntu. I heard from ...
0
votes
0answers
29 views

video caching server

I am willing to configure any open access video caching server that will be placed at the main server of an organization and which does not demand client to change network setings(http proxy) in their ...
0
votes
0answers
40 views

Drop cache pages and memory (cleaning the cache) as normal user

Some times I need to clean the system cache by doing the steps below: sync su echo 3 > /proc/sys/vm/drop_caches as you can see, I need root privileges for this purpose. Is there any way to do ...
78
votes
4answers
63k 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 ...
1
vote
2answers
1k views

Why won't Ubuntu tweak delete my Thumbnail Cache?

In Ubuntu tweak 0.8.7 which is installed in my Ubuntu 14.04 LTS running unity I could not delete a particular file called 'fail' in the thumbnail cache. I am actually trying to remove that file with ...
3
votes
1answer
41 views

View size of CPU cache through the command-line?

How do I view the size of my CPU cache using the command-line? I want to view information on L1, L2 and L3 cache. Also, would it be possible to ouput only information on cache, so that all other ...
1
vote
1answer
222 views

Cannot uninstall php-memcache using terminal

I uninstalled php5 from my computer with command sudo apt-get -y purge php.* running this command will show me this message in terminal: Errors were encountered while processing: php5-memcache ...
0
votes
2answers
450 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 ...
4
votes
1answer
123 views

How do I partition my SSD to benefit of the speed?

I've watched a few videos on Youtube and read a little bit on the internet about partitioning. But it is still unclear to me how to partition my 4 drives. Besides a Raspberry Pi and VM I have no Linux ...
0
votes
1answer
40 views

Downloading and playing audio from cache

I was wondering if there was a way to download (only audio) and play a youtube video. How does one read and download from cache using the terminal?
0
votes
1answer
107 views

L3 cache appears as disabled

In my XPS 8700 i7 4790, the comand lshw shows that the 8MB L3 cache is disabled, does this mean that the L3 cache is not working? should I not use ubuntu and go back to windows? does the operating ...
2
votes
0answers
388 views

huge cached memory, mostly freez system :(

I have a problem with system memory cache, i think it is bigger than normals. after 5-10 minute of usage, system become unusable and i must restart my "Asus X451-CA" laptop. this command ran upon user ...
2
votes
2answers
78 views

Prevent Ubuntu RAM increase rapidly?

I have ubuntu server 14.04 installed in my server. And i have vsftpd server that provide download file test for testing purpose. my question is why if client download the ftp file, my server ram is ...
16
votes
3answers
16k 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 ...
3
votes
1answer
115 views

Disable RAM memory caching for a particular program

I am running few benchmarks test using binaries made out of C. Is there anyway so I can ask kernel not to cache any part of these binary programs?
0
votes
1answer
74 views

cache request miss graphite sitespeed.io

I want to send data from sitespeed.io to graphite using this command sitespeed.io -u http://www.sitespeed.io --graphiteHost localhost -m 5 --graphiteNamespace sitespeed -b firefox -n 3 I think the ...
-1
votes
1answer
32 views

Removal of files in sudo (Terminal) [closed]

Should I remove this file in my terminal for better performance? In a simpler explanation should I run: cd ls rm -r .cache for better performance? My assumption is that it will have to compile ...
0
votes
1answer
215 views

EnhanceIO persistent udev rules not firing on reboot - Ubuntu 14.04.3

Abstract : I've installed enhanceIO and enhanceio-dkms from the daily PPA at http://ppa.launchpad.net/enhanceio/daily/ubuntu/ giving version 0+git20130406-0~69~ubuntu14.04.1. Everything seems to be ...
0
votes
0answers
49 views

File cache slows down disk IO

I have this config: Linux peti-H97M-D3H 3.13.0-66-generic #108~precise1-Ubuntu SMP Thu Oct 8 10:08:09 UTC 2015 i686 i686 i386 GNU/Linux with 12GB RAM, Sandisk Extreme II SSD and i7-4770K. I must ...
5
votes
2answers
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 ...
2
votes
0answers
502 views

Error while updating via terminal from Ubuntu 12.10 to Ubuntu 13.04

I get this error multiple times (and these codes underneath still run for some reason) This likely means that your installation is broken. Try running the command: gdk-pixbuf-query-loaders > /...
1
vote
2answers
9k 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 ...
1
vote
1answer
88 views

Purpose of '~/.cache' directory and when is it safe to delete? [duplicate]

What is the purpose of every user's ~/.cache directory? Under which circumstances can it be deleted, when should one be careful about its contents?
9
votes
3answers
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 ,...
7
votes
2answers
3k views

How to make ubuntu use more RAM to cache a specific set of binaries?

After 2 weeks of trying, failing, trying again, still failing, I finally got Ubuntu stable and operational. My hard disk is quite old and slow but I have excessive RAM (16 GB 2133 mhz), so I was ...
50
votes
4answers
29k 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?