Decrease the size of data, typically to preserve space or reduce network bandwidth required while transmitting files. It can be applied to files, folders, disks, etc.

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-2
votes
1answer
31 views

What are the downsides of http compression?

I always was aware that http supports gzip compression, but never cared about it. I counted on that the servers and shared hosts I use would have activated it by default (I'm more of a frontend ...
1
vote
1answer
22 views

How to prevent compression of images served via HTTP

I have an already optimized JPEG image in my server 32.07 kB (and in my local computer), 800px * 534px, if I request it via browser, it keeps the same width * height, but its size gets smaller 17,97 ...
0
votes
0answers
4 views

iis 7.5 doesn't compress javascript

I can't get httpCompression to gzip my .js's This is my web.config <urlCompression doStaticCompression="true" doDynamicCompression="true"/> <serverRuntime enabled="true" ...
0
votes
0answers
20 views

IIS7 httpCompression dynamicTypes not matching the wildcard *(star) in “application/json*”

The Problem: My goal is to enable gzip compression of responses from IIS for the content-type "application/json*", but when the wildcard * is added instead of an exact string match compression ...
0
votes
2answers
43 views

Can't send to compressed (zipped) folder

I'm IT Technician at a Secondary School and our Network Manager is away on long term leave. Currently our student's aren't able to send to - compressed folder. When trying the error 'File not found ...
1
vote
2answers
19 views

Copying between lzo compressed BtrFS's: de/re-compressing?

I'm copying a large number of files between two lzo compressed BtrFS filesystems on different drives mounted on the same machine. It appears that the files are being de/re-compressed. Is there a way ...
1
vote
0answers
25 views

“optimize” pdf files in linux directory [closed]

Following situation that I could not think of a satisfying solution: Users are uploading pdf documents to a certain directory on my linux host. These documents are sometimes much larger than ...
1
vote
2answers
56 views

Lightweight transparent compression filesystem?

I have an AMD64 KVM VPS at RamNode, it has 30 GB disk, 256 MB RAM, and 1 "virtual CPU" (I have no idea of the specs of the host CPU). It will be used to store many small, easily compressed files, ...
0
votes
0answers
14 views

How to enable static GZip compression for versioned “/style.css?v=1” resourcess in IIS?

Google PageSpeed reports that files like .css and .js are compressed, but .css?v=1 and .js?v=1 are not. How to enable static compression for files that have a dynamically changing version number in ...
0
votes
1answer
40 views

mod_deflate and Pagespeed

I´ve activated mod_deflate on my server. The problem is that Google pagespeed says that my site needs a compression. Have anybody an idea? This code is in the /etc/apache2/apache2.conf. I restartet ...
0
votes
2answers
188 views

Unzip from stdin to stdout - funzip, python

The goal is to read a zip file from stdin and uncompress to stdout. Funzip works and is the solution I am looking for, the zip contains a single file, unfortunately funzip fails when the compressed ...
1
vote
0answers
41 views

Hyper-V avhd files compressed

I have inherited a machine at a client site that the previous IT person thought it would be a bright idea to compress all the AVHD and the base VHD files for one of their servers running under hyper-v ...
0
votes
1answer
83 views

How do you create a qcow2 file that is small yet commodious on a Linux server?

I believe that there are qcow2 files that displace a small amount of gigabytes on a server (as verified with a df -h on the physical server) yet allow for lots of space when you log into the ...
0
votes
4answers
157 views

How to “really” reduce the size of KVM VMs images?

I've spent many hours searching the web about how to shrink KVM virtual disk images, especially for Windows guests, with no luck. All I've found is to zeroize the VM free space, defrag the virtual ...
1
vote
1answer
62 views

Can't get included CSS and JS files to be compressed

I have enabled compression via .htaccess and in httpd.conf However when I run it through the various online testers, its always saying that various included files are not compressed. Apache version ...
0
votes
0answers
44 views

Debugging Ansible's support for compressed database imports?

The documentation for Ansible's mysql_db module says, "Uncompressed SQL files (.sql) as well as bzip2 (.bz2), gzip (.gz) and xz compressed files are supported." However, when I try to import a .gz ...
0
votes
2answers
219 views

Extracting 200 GB ZIP file [closed]

I have a large 200 GB file to extract. I was using WinRAR on a Windows laptop, and it's a very slow process. I am considering using an Amazon EC2 instance to help speed up the process. How can ...
1
vote
1answer
179 views

HTTP compression in Apache reverse proxy?

I have an App server where Apache httpd is installed which serves the requests. We have another Proxy machine which redirects the requests to this App Server httpd using proxy pass. When I apply gzip ...
2
votes
2answers
76 views

Reduce xen image disk usage

Two cases: 1.If making hdd image using dd and copy it trough nfs to another server: mount -o ro,remount / dd if=/dev/sda bs=64K | gzip -c > /share/test.img.gz then after gunzip I get 20Gb (for ...
0
votes
0answers
51 views

Trying to disable Apache compression for an URL, but I can't get it to work

I'm trying to disable Apache compression for certain URLs by adding the lines below to .htaccess. I'm trying to get one URL working, but I can't get it to ignore the URL - Apache still renders those ...
2
votes
0answers
139 views

GZip compression not working on Tomcat7

I recently tried using gzip compression to improve web UI performance. I configured Tomcat Connector as below. compression="on" compressionMinSize="2048" noCompressionUserAgents="gozilla, traviata" ...
1
vote
1answer
245 views

Avoid double (de)compression in Subversion with Apache

I have a Subversion 1.8 server configured with Apache 2.2 on windows 2003. The server I have is a little bit old and it has a lot of CPU peaks that I suspect are affecting its performance. This ...
-1
votes
1answer
64 views

Is there a “smart” file compression utility that can apply different algorithms to different files? [closed]

I've got a Linux server I can only connect to remotely. I want to backup it, but it'll have to be over the Internet, and I've chosen Google Drive to hold the backups. The only piece of puzzle I still ...
0
votes
0answers
290 views

Apache HTTPD - mod_deflate and mod_expires not applied?

I have a site that I am serving up using Apache HTTPD 2.4 on CentOS 6.6. Apache is acting as a reverse proxy to a Wildfly 8.2 server on the same host that is serving up a JavaEE web application. ...
0
votes
0answers
56 views

Nginx cache gziped results on reverse proxy

I have been trying to figure out how I could set my reverse proxy to cache gziped results. What I am trying to achieve is following: Client requests for JS/css -> Reverse proxy requests it from ...
2
votes
1answer
9k views

xz compression not available - yum error on centos [closed]

I want to update my php to new version. Dealing with this source: https://webtatic.com/packages/php56/#comment-139854 And now I can't use yum commands. Anytime when I'm trying install something or ...
0
votes
1answer
307 views

Trouble getting DEFLATE working on Apache 2.2

I discovered that my server isn't serving up compressed pages. Using this answer, I added the following to my httpd conf file: # Declare a "gzip" filter, it should run after all internal filters ...
0
votes
1answer
984 views

Could not install php zip extension by using `pecl install` command line

When I want to install the zip extension of php using pecl utility, I got the following error: No releases available for package "pecl.php.net/zip" install failed but the zip extension is exists ...
1
vote
0answers
91 views

Google PageSpeed suggests compression - but my site is https

Google PageSpeed suggests to deliver some static files like e.g. JavaScript, CSS. But as our site is HTTPS only we disabled compression in our web server because of security reasons. As far as I ...
1
vote
1answer
91 views

Which compressed file formats are efficient with rsync?

Every system admin knows that rsync is the way to go if you need to do backups of large files, e. g. a database file: since it uses delta compression, it only overwrites blocks that have been modified ...
2
votes
1answer
66 views

backup compression ratio in SQL 2012 worse than in SQL 2008

We have SQL 2008 Enterprise with TDE enabled and upgraded to SQL 2012 with TDE still enabled. Everything works fine except that I am getting worse backup compression than in SQL 2008. I do ...
-6
votes
1answer
364 views

How do I zip & download files on an ubuntu server? [closed]

I have gotten SSH access into an EC2 instance of Ubuntu. I want to zip an entire folder, and download it to my local machine. The folder is large - 2GB+. How do I do that?
0
votes
2answers
669 views

create zip based on contents of a file list

I created a file with diff files diff-files.txt it has 6000+ file paths in it. Now I want want to create a zip based on those files. I know I can zip multiple files with: zip diffedfiles.zip file1 ...
2
votes
2answers
1k views

Mirroring harddisk with compressed files with Robocopy

I tried to mirroring an existing disks on a new disks with less space. It is very important that the file structure, attributes and ACL's are exact as on the source disk. For this I tried ...
-2
votes
1answer
88 views

Dangers of NTFS compression? [closed]

What are the dangers of NTFS compression? Can I lose files? What if say my CPU, motherboard or PSU burns? What if some data on my HDD becomes corrupted?
1
vote
2answers
52 views

Compress concrete files on dfs

We work with a lot of Microsoft Access files for different costumers. That files are saved in different folders(also in subfolders) for every year separated by year,costumer ,month, etc. The main ...
0
votes
2answers
59 views

Unzip piping order

I have a file, foo.zip which looks something like this: foo.zip -- fileA.txt -- fileB.txt I can pipe the output of the extracted files like this: unzip -p foo.zip *.txt | something My problem is ...
0
votes
1answer
236 views

How to debug nginx + php-fpm download failures?

Downloads fail after all data downloaded on nginx + php-fpm. I'm controlling downloads of zip files (roughly 100mb each) with a PHP script that streams the file directly to the client. I'm using ...
1
vote
1answer
337 views

Mounting compressed filesystem using FUSE

I'd like to move some folders on my computer to a compressed read/write images, so I could get it to take less disk space on my machine (the folders contain some Mercurial and Git repositories). ...
3
votes
2answers
61 views

How do I persuade IIS to deliver content from within a Zip file?

Is it possible to "persuade" IIS to deliver content from a Zip file "Container" ? For example I have lots of PDF documents packed in Zip archives and I need to display the PDFs in a browser. So for ...
0
votes
1answer
98 views

zip in cron doesn't work, but zip from command is working [duplicate]

I need to back up a directory with zip -r /savehere/backup_`date +%y%m%d%H%M%S` /save/this -q It works fine. But not from crontab: * * * * zip -r /savehere/backup_`date +%y%m%d%H%M%S` /save/this ...
2
votes
1answer
121 views

Hardware compression on tape drives: does it still make sense?

Does hardware compression still make sense on tape drives, considering the performance of modern CPUs? Also, what should I do if I have some data which is already compressed in GZIP and my drive is ...
11
votes
2answers
12k views

Transparent compression filesystem in conjunction with ext4

I am trying to test a project that needs compressed storage with use of the ext4 file system since the application I use relies on ext4 features. Are there any production/stable solutions out there ...
2
votes
4answers
5k views

Should I use rsync compression over a gigabit LAN?

I normally use rsync's -z option to enable compression when transferring files over the internet. However, if I am on my own (idle) gigabit LAN, do I still want compression? Or will it be faster ...
0
votes
2answers
349 views

IIS 8.5, serving corrupt zip files

I have a WS2012r2 web server with multiple sites. We host zip files that are accessed though a direct URL (http://mysite.me/Test.zip"). These files are used to update our software and are downloaded ...
0
votes
3answers
176 views

How to zip lots of folders into three+ independent zip files? [closed]

I have a massive amount of folders, and I want to zip/gzip/(what ever) them into 3 or more independent files. So for example, let's say I have this directories on my server: /dir1 /dir2 /dir3 /dir4 ...
0
votes
1answer
583 views

7z “is not supported archive” while updating an archive

7za u -pPasswored -mhe=on -r -m0=lzma -mx=9 -mfb=64 -md=32m '-x!temp' filename.7z /home/software While updating the archive we are getting this error: Error: XXXXXXX.7z is not supported archive ...
1
vote
1answer
206 views

BASH: bz2 to gzip conversion with find

I would like to convert a muliply bzip2 files to gzip format. I achived this with foor loop but I would like to do the same with find: BASH for loop: for i in $(ls -1 *.bz2); do echo "Converting: $i ...
-1
votes
3answers
1k views

How to set apache 2.2 gzip compression level?

I am running Debian and Apache/2.2.22 I have gzip enabled, and I would like to know, what is my compression level and how to change it. I know this can be achieved editing php.ini, but I would like to ...
1
vote
1answer
61 views

SQL Server 2012 Backups Not Compressing

We recently upgraded from SQL Server 2008R2 to SQL Server 2012 Enterprise. After doing this I noticed that our DB backups were barely compressing at all. Our 22gb DB was compressing down to about 4gb ...