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#!/bin/bash | |
# Get the architecture of the machine | |
arch=$(uname -m) | |
os=$(uname -s) | |
# Download the Zellij binary | |
if [ "$os" == "Darwin" ]; then | |
filename="zellij-${arch}-apple-darwin.tar.gz" | |
url="https://github.com/zellij-org/zellij/releases/latest/download/$filename" |
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chmod +x ~/.xinitrc | |
sudo pacman -S ly | |
sudo systemctl enable ly.service | |
sudo systemctl start ly.service | |
# config | |
sudo vim /etc/ly/config.ini | |
sudo systemctl restart ly.service |
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"""Simple implementation of a B+ tree, a self-balancing tree data structure that (1) maintains sort | |
data order and (2) allows insertions and access in logarithmic time. | |
""" | |
class Node(object): | |
"""Base node object. | |
Each node stores keys and values. Keys are not unique to each value, and as such values are | |
stored as a list under each key. |
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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 |