Simple overview of use/purpose.
An in-depth paragraph about your project and overview of use.
#!/bin/bash | |
if [[ $EUID -ne 0 ]]; then | |
echo "This script must be run as root" | |
exit 1 | |
else | |
#Update and Upgrade | |
echo "Updating and Upgrading" | |
apt-get update && sudo apt-get upgrade -y |
Picking the right architecture = Picking the right battles + Managing trade-offs
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 |