Useful for accessing a computer that does not have a public IP address, over the internet. The machine can be behind multiple firewalls and NATs.
Gallon Zhou DuckyShine004
🎯
SomajitDey
/ freemium_port_forwarding_services.md
Last active
January 2, 2026 18:13
A list of free or freemium services for exposing localhost to internet with a public ip
peterellisjones
/ Chess Perft test positions
Last active
August 20, 2025 17:35
Test positions for debugging chess engines. Formatted as JSON array of FEN strings
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| [ | |
| { | |
| "depth":1, | |
| "nodes":8, | |
| "fen":"r6r/1b2k1bq/8/8/7B/8/8/R3K2R b KQ - 3 2" | |
| }, | |
| { | |
| "depth":1, | |
| "nodes":8, | |
| "fen":"8/8/8/2k5/2pP4/8/B7/4K3 b - d3 0 3" |
Francesco149
/ osu_on_linux_overhaul.md
Last active
December 2, 2025 07:52
Ultimate guide to low-latency osu on linux
this has been rewritten yet again as most workarounds aren't required anymore since wine 3+
example video of the final result: https://www.youtube.com/watch?v=zkqzQoeOGfU
with touchscreen: https://www.youtube.com/watch?v=GcIrlorWmaQ
performance is indistinguishable from windows. there might be a very slight ~25ms sound latency which is easily compensated with +25 local offset
tested on
jboner
/ latency.txt
Last active
February 6, 2026 04:05
Latency Numbers Every Programmer Should Know
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| Latency Comparison Numbers (~2012) | |
| ---------------------------------- | |
| L1 cache reference 0.5 ns | |
| Branch mispredict 5 ns | |
| L2 cache reference 7 ns 14x L1 cache | |
| Mutex lock/unlock 25 ns | |
| Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
| Compress 1K bytes with Zippy 3,000 ns 3 us | |
| Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
| Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |