| Server | Price* | CPU (1 thread) | CPU (4 threads) | IO |
|---|---|---|---|---|
| Scaleway Start1-XS Atom C3955, 25G NVMe |
$4 | 21 sec P₉₅ = 2.1ms |
21 sec P₉₅ = 14ms |
P₉₅ = 0.40ms |
| Scaleway VC1-S Atom C2750, 50G SSD |
$4 | 46 sec P₉₅ = 4.6ms |
23 sec P₉₅ = 14ms |
P₉₅ = 0.39ms |
| Hetzner CPX11 AMD EPYC, 40G SSD |
$5 | 20 sec P₉₅ = 3.2ms |
9.6 sec P₉₅ = 11ms |
P₉₅ = 0.29ms |
| Hetzner CX21 Intel Xeon, 40G SSD |
$6 | 24 sec P₉₅ = 2.8ms |
12.5 sec P₉₅ = 11ms |
P₉₅ = 0.97ms |
| AWS t2.micro 1G*Intel E5-2676 v3 2.4 |
Prepare (Ubuntu 22.04 Live):
sudo su
apt install pv
Dump disk (or partition) to local file
zstd < /dev/nvme0n1 | pv > laptop.img.zst
Dump disk (or partition) to compressed image over network (NAS)
base encode to H265 (HEVC)
ffmpeg -i in.mts -c:a copy -c:v libx265 out.mp4
base encode to H264
ffmpeg -i in.mts -c:a copy -c:v h264 out.mp4
scale to 720p
| require 'zstd-ruby' | |
| class CompressedHash < Hash | |
| DICTIONARY = IO.read('config/dictionaries/1') | |
| def mongoize | |
| if size > 0 # only compress non-empty hash | |
| # BSON::Binary.new(Zstd.compress(self.to_bson.to_s)) | |
| BSON::Binary.new(Zstd.compress_using_dict(self.to_bson.to_s, DICTIONARY)) | |
| else | |
| self |
Example with wget:
wget --no-parent -rpk --wait=1 --random-wait https://wbsite.com/page
--no-parent prevents going up in the URLs
--wait=1 --random-wait slows down request and add jitter to go easy on the server
If it needs a connected session:
--header="Cookie: session=xxxx"
| <?php | |
| class RestRequest | |
| { | |
| protected $url; | |
| protected $verb; | |
| protected $requestBody; | |
| protected $requestLength; | |
| protected $apiKey; | |
| protected $username; |
| module VAT | |
| RATES = { | |
| "AT" => 20.0, | |
| "BE" => 21.0, | |
| "BG" => 20.0, | |
| "CY" => 19.0, | |
| "CZ" => 21.0, | |
| "DE" => 19.0, | |
| "DK" => 25.0, | |
| "EE" => 20.0, |
| # Examples: | |
| # | |
| # expect { code }.to change { finds("users") }.by(3) | |
| # expect { code }.to change { updates("contents") }.by(1) | |
| # expect { code }.not_to change { inserts } | |
| # | |
| # MongoSpy.flush | |
| # ..code.. | |
| # expect(MongoSpy.queries).to match( | |
| # "find" => { "users" => 1, "contents" => 1 }, |
| sudo cat /proc/sys/net/netfilter/nf_conntrack_max | |
| echo 500000 | sudo tee /proc/sys/net/netfilter/nf_conntrack_max | |
| sudo cat /proc/sys/net/netfilter/nf_conntrack_max |