Questions tagged [compression]
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.
423 questions
Score of 1
3 answers
416 views
How to truncate a zipped file?
I have very large log files and I often truncate them with:
truncate -s 20M filename.log
However, I also have some files that have been zipped and they are smaller, but I want to shrink them further ...
- reputation score 127
Score of 1
1 answer
206 views
Why is ZFS zstd-13 compression reporting so odd when lz4 is zfs sent -c -o compression=zstd-13
Curious weirdness on an updated Proxmox 9.1 system with zfs 2.3.4 pve-1 (2.3.4 is from Aug 25, 2.3.5 is current stable but not in my distro yet).
When you have a default lz4 pool which all zfs fs's ...
- reputation score 303
Score of 0
2 answers
219 views
Disabling imap compression in Dovecot
My dovecot imap server use deflate compression for connection. How can I disable it for testing? I tried to add
plugin {
imap_compress_deflate_level = 0
}
to custom config in /etc/dovecot/conf.d/, ...
- reputation score 103
Score of 3
1 answer
1507 views
Does "btrfs filesystem defrag -c" (compress option) force compression?
BTRFS with compression enabled uses a heuristic not to compress files that are not well compressible. Does compressing existing files with "btrfs filesystem defrag -c" also use the heuristic,...
- reputation score 1831
Score of 0
0 answers
1157 views
Re-compressing XZ kernel module?
I have a kernel module produced by kernel option CONFIG_MODULE_COMPRESS_XZ. When I manually decompress the file with unxz and re-compress with xz, the new .ko.xz file differs from the original .ko.xz ...
- reputation score 71
Score of 1
0 answers
94 views
zfs send to NAS with PIGZ compression slowness
The following command that I use to backup used to take 5 minutes to complete and since last week it is taking around 25 minutes. This is after restarting a switch stack the server is connected to. ...
- reputation score 11
Score of 2
1 answer
444 views
Ways to make deployment ready pre-compressed brotli files on windows server
I am dynamically generating HTML files, which I use for deployment.
This is what I use to make these HTML file:
function writeFile()
Dim objStream
Set objStream = CreateObject("ADODB....
- reputation score 314
Score of 1
2 answers
240 views
Nginx performance issues
I made a website using React and connected to Strapi. But I need to keep some background videos mainly on the home page.
The main banner has 4 videos and the background of the page is also a video.
...
- reputation score 13
Score of 1
2 answers
1002 views
Will disk compression impact the performance of a MySQL database?
I've recently setup a TrueNAS storage server and hosted on it is a MySQL database. It's about 3GB; I'm not too concerned with how much space it's utilising.
By default, TrueNAS enables LZ4 compression ...
- reputation score 113
Score of 1
1 answer
764 views
Cloudflare uncompressing, then re-compressing response bodies
I'm using Node.js/express and if I set the headers
Content-Type: application/json
Content-Encoding: gzip
and send gzipped compressed bodies of JSON data, this works as expected - when not behind ...
- reputation score 111
Score of 0
1 answer
421 views
Debian: Simple way to compress files wanted
I often need to compress archives in Linux. is there a simpler way instead of always building such complicated commands?
tar zcvf /tmp/mybackup.tar.gz /home/important
- reputation score 793
Score of 0
0 answers
5276 views
is there a faster way to extract a large file tar in lz4 format?
I have a 7 TB file that is tared with lz4 compression. It takes about 8 hours to extract. is there a faster way to do this?
This is the command I use:
lz4 -d /mnt/tmp/7TBFile.lz4 | tar -xvf -
- reputation score 1
Score of 2
0 answers
758 views
Are servers allowed to add a Content-Encoding header based on filename, if there is no compression on-the-fly?
Problem
Suppose we have a compressed archive on disk, e.g. file.tar.gz, which should be served as-is.
The file is served with Content-Type: application/gzip, but for some reason the server also adds a ...
- reputation score 193
Score of 1
1 answer
667 views
Compressing rarely queried historical data in postgres
In short: compress multiple historical DB records to bigger, compressed records and temporarily uncompress it to the original records for easier querying, and clean that up when querying is done. ...
- reputation score 171
Score of -1
1 answer
990 views
MySQL JDBC compression in transit
Good morning,
I am looking to set my application connection to MySQL to compress data in transit.
I read MySQL doc. but it's not cleat to me if I need to do something on the client side, on the server ...
- reputation score 868