Tagged Questions

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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0answers
8 views

Is there a filesystem with caching and location-awareness?

Is there a way to setup a filesystem spread on 2 machines A and B in the following way? A and B are not on the same local network. Connecting to any machine shows the same files Writes to any ...
0
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0answers
27 views

How to find and report memory leak

When I use any graphics or diagram editing software like Gimp or Dia (and I have tried a couple more) I suddenly find the cache sucking up all my free RAM and cache which slows the system down to a ...
0
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0answers
8 views

Looking for a tiered cache solution for data logger

I have a Ubuntu14.04 serving as a traffic logger. Currently, the data are being written to a Ramdisk, and then later synced to a hardware storage. I'm curious if there's a software solution that will ...
0
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0answers
50 views

Already downloaded files are not cached by trafficserver 5.x (caching forward proxy)?

I want to setup Apache trafficserver 5.1.0 installed from source on Ubuntu 14.04 to use a large amount of disk space to preserve large download files as well as web sites (in order to get started I ...
1
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0answers
80 views

Why does Firefox ignore the `304 Not Modified` status sent by the webserver?

For my site, Firefox 32.0 seems not to cache a CSS file of my Nikola 7.1.0 installation and ignores the 304 Not Modified response by the webserver. What also puzzles me, is that it sends the 2nd ...
0
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0answers
22 views

Difference between System monitor and free -h [duplicate]

I have a Lenovo T430 laptop with 3.7GB of RAM. Since I started using this machine I observe the following strange behavior. If I do a lot of things, say have rails server running, a few nodejs ...
0
votes
0answers
10 views

Can't put content in fastcgi_cache dir

I set up nginx to use the fastcgi_cache parameter. I also set fastcgi_cache_path. And everything works fine. What I tried to do is to manually add a CACHEDIR.TAG file in the fastcgi_cache_path dir in ...
0
votes
0answers
21 views

How often is the thumbnail cache cleared? [duplicate]

I'm not sure which application is the culprit (Nautilus, with the help of another library, I would assume), but if you take a look at ~/.cache/thumbnails you will notice that Ubuntu stores the ...
1
vote
1answer
26 views

Does Ubuntu delete cache-thumbnails after leaving the guest mode?

When i leave the guestmode, are there still some cache files?
0
votes
1answer
65 views

How to copy all “apt-get update” cache

How can I copy all apt-get update cache to another computer, so that it doesn't need be updated again and again after new installation?
0
votes
0answers
17 views

Clear history of words typed in the dialog run (ALT + F2)? [duplicate]

wanted to erase all the words that remain as an option, every time tightening ALT + F2
0
votes
1answer
74 views

There is a file in ~/.cache/deja-dup/.. with 899G size

I am running my mail server on ubuntu which has 1.2 TB in total space. Today I realized there was an issue on my mail server, it was refusing sending/receiving mails due to storage which triggers ...
1
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0answers
61 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 ...
7
votes
2answers
194 views

Does Ubuntu store data of external media/drives?

I keep confidential data (docs, spreadsheets, images, etc) on USB sticks or discs. I plug/insert them to access the data when I need, and put them back in a drawer when I'm done. Does Ubuntu store ...
0
votes
0answers
26 views

Problem installing packages - Java [duplicate]

I'm having a problem installing Java. It keeps telling me this when it starts to remove outdated cached downloads: Removing outdated cached downloads... sha256sum mismatch jdk-8u5-linux-x64.tar.gz ...
2
votes
1answer
2k 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 ...
1
vote
0answers
332 views

Can't configure NGINX to cache the images

I have been trying to cache images that are stored in nginx server, I am quite new here and to nginx I have installed it and configure it with php5-fpm, I have been reading many tutorial regarding ...
2
votes
3answers
791 views

Why does my system use so much cache?

Previously, on my desktop computer running Ubuntu 14.04, I had 4GB RAM, which I thought should be plenty. However, after being on for a while, my computer would seem to get slow. I have a system ...
0
votes
1answer
31 views

More about JuJu cache

I would like to know more about JuJu cache. After I start a charm and JuJu provisions a machine for the first time, the charm will be downloaded and all dependencies installed (apt-get, etc). This ...
1
vote
1answer
302 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 ...
0
votes
2answers
34 views

How to update a machine from packages downloaded on a different but similarly configured machine?

I have two laptops with similar configuration. I have updated one and would like to use the cached packages of this to update the other one. I cannot find a way. I did Ctrl+A then Enter but machine ...
0
votes
1answer
95 views

Should I put /boot on SSD or HDD

I am running Lubuntu 14.04 64bit. I am planning to implement EnhanceIO to use my new 25GB SSD drive for caching my 4TB RAID 0 array. The raid array is partitioned as: 500MB /boot, 20GB /, 200GB ...
2
votes
1answer
393 views

Clear .cache tracker directory in ubuntu?

I created a partition for Ubuntu and I just ran out of space a couple days ago. I used the Disk Usage Analyzer and I realized that for some reason the directory /home/.cache uses up a lot of disk ...
1
vote
1answer
121 views

Know programs in cache

I have this situation with RAM and SWAP at the moment: $ free -h total used free shared buffers cached Mem: 7,7G 7,5G 159M 100M ...
0
votes
0answers
52 views

Disable filesystem read cache

How can I disable the Linux filesystem read cache for Ubuntu 12.04? I do not want to only free the actual cache ( echo 3 > /proc/sys/vm/drop_caches ) but disable the read cache completly.
1
vote
0answers
76 views

Error when starting ubuntu laptop.

My laptop is a modified Toshiba Satellite L355. It has a Intel core 2 duo 1.83ghz Cpu and 3gb ddr2 Ram. I'm using Saucy Salamander 13.10 I installed Ubuntu Studio a while back when my friend gave it ...
0
votes
0answers
13 views

update package error [duplicate]

E:Encountered a section with no Package: header, E:Problem with MergeList /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_precise_multiverse_i18n_Translation-en, E:The package lists or status ...
0
votes
0answers
5 views

Distributed share storage across WAN

I'd like to build something which looks like "BranchCache" in Windows Server with Ubuntu. That is : - publish/share a folder on an Ubuntu Server in site A - have a user located in site B access the ...
0
votes
1answer
83 views

my cache fills up but never goes down

I know Ubuntu manages memory autocratically, it stores cache on ram for quick program access, but every time I fill up the cache, it stays filled up, and Ubuntu it self cant delete the cache, if I ...
0
votes
0answers
21 views

Putting Firefox in a truecrypt disk

Hello I am new to Ubuntu, my priority is to move the cache to a mounted truecrypt disk, my biggest problem is that I am confused about "directories", because in Windows it was easy to just put the ...
0
votes
0answers
49 views

Ubuntu NAS, cache files to ram for enhanced transfers?

I have a little dual core celeron computer that I will be using as a NAS. I have 8 GB of ram, and I was wondering if there was anyway to leverage that ram to increase file transfer speeds, especially ...
3
votes
1answer
97 views

Disable memory cache - real reason

OK, before you mark my thread a duplicate I want to say, that I know this very good answer: How do I clean or disable the memory cache? But this is not case for me. I am making some performance tests ...
0
votes
2answers
77 views

How to remove packages from the apt cache that are not currently installed?

I want to organise my apt cache folder so I want to remove packages that are NOT currently installed and keep packages that are ONLY currently installed
2
votes
0answers
111 views

INCONSISTENT usb write/copy speeds; cache problem?

Foremost, slow USB write/copy speeds seem to be a hackneyed topic. But this issue is one I've not seen presented elsewhere. Thanks for showing this novice your support. I'm copying the same .iso ...
1
vote
1answer
139 views

How does Ubuntu remembers process history?

Recently I noticed two things in my Ubuntu-13.10(32-bit) and would like to get cleared. Scenario-1: One of the functionality of terminal is that you can get previous commands by using "UP" arrow ...
1
vote
1answer
74 views

Clearing OS Cache

I'm guessing that's what it is. I reinstalled Ubuntu and replaced my newly created home directory with my old home directory. Problem is, my new Ubuntu doesn't have XYZ program installed and when I ...
1
vote
0answers
35 views

Set XDG Cache for Chromium

I want to use the XDG standard to export Chromium's cache to /tmp/chromium, which I've mounted in RAM. I'll do this with a script in /etc/profile.d. But the contents of the file I don't know. If I ...
0
votes
0answers
38 views

Changes not reflecting back to the browser. Editing files remotely through FTP. Ubuntu Server.

I am developing and editing files through FTP. The changes are not reflecting back on the browser. I have cleared cache on the browser using key combination but still the changes are not reflected. I ...
1
vote
0answers
124 views

No automatic thumbnail generation

I recently decided to do a fresh install of 13.10 and ran into a quite peculiar problem. It seems that thumbnails are not generated automatically, when I open a folder in nautilus I can only see a ...
0
votes
0answers
678 views

EnhanceIO: Write-through vs Read-only

I have installed an EnhanceIO SSD cache on my notebook. EnhanceIO supports three caching modes: read-only, write-through, and write-back. Read-only caching mode causes EnhanceIO to direct ...
5
votes
2answers
599 views

Ubuntu tweak and Mozilla (firefox and thunderbird) cache

I usually use Ubuntu tweak to do cleanup jobs on my PC. This includes apt and program cached data and old kernels. This goes alright for most programs except Mozilla based application - Firefox and ...
-2
votes
2answers
352 views

How to disable caching in Ubuntu? Does Ubuntu consume more RAM? [closed]

I just viewed Hacker News. There is something mentioned like "Linux ate my RAM". How much is it true that linux consumes more RAM. It will be helpful if someone can provide guide to remove cache of ...
1
vote
0answers
206 views

Can't Start Carbon - 12.04 - Python Error

I am really hoping someone can help me as I have spent at-least 15 hours trying to fix this problem. I have been given a task by a potential employer and my solution is to use ...
1
vote
2answers
64 views

How to start in background a list of applications on login

I observed the following thing: I login on my computer account. I run in the Terminal some-app I wait about 20 seconds to start. Then I close it. I run same command in terminal. It start in about 1 ...
1
vote
2answers
7k views

How to clean /var/cache?

When I woke up this morning, I found my root had filled overnight du -hx --max-depth=1 / 132M /boot 4.0K /media 16K /lost+found 16M /root 702M /lib 4.0K /OLDHOME 8.2G /usr ...
0
votes
1answer
227 views

How to cache (more) data on SSD/RAM to avoid spin up?

I have Ubuntu server 12.04 running on a 40GB SSD with a raid 5 mounted for media files. I access the files often via samba either with a Raspberry Pi for music playback or with another PC for the ...
2
votes
2answers
479 views

SSD cache for Lenovo Y500

I have a Lenovo Y500 with a dual GTX650M, 16Gb SSD and 1Tb HDD. I just install a clean Ubuntu 13.04 then upgrade to 13.10. Previously I had windows 8 but I cleaned it off and only use Ubuntu 13.10 ...
1
vote
1answer
726 views

How can I limit the size of my ~/.cache folder

I'm running Ubuntu on a limited-size SSD, so I count every GB. Now, the ~/.cache folder grew to 1.7 GB (various applications such as Chrome, Spotify etc. filled it up) and now I'm wondering if there's ...
3
votes
1answer
2k views

How can I clear my cached gpg password?

I've tried: the SIGHUP method --> no succes the cache timeout in gpg-agent.conf --> it seems that this file is not read, althougt I have the 'use-agent' line in gpg.conf What should I do ?
1
vote
2answers
51 views

select packages related to some program in apt archive

Suppose that I have installed a program "someProgram". Now, I want to select the .deb packages that were downloaded into /var/cache/apt/archive folder. How can I select the packages related to ...