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anonymous / arch_install
Created Nov 22, 2012
arch install
View arch_install
systemctl enable sshd.service
systemctl start sshd.service
parted -s /dev/sda mklabel gpt
parted -s /dev/sda mkpart "primary" "fat16" "50MB" "60MB"
parted -s /dev/sda mkpart "primary" "ext4" "1%" "99%"
parted -s /dev/sda set 1 bios_grub on
mkfs.ext4 /dev/sda2
jboner / latency.txt
Last active Jan 23, 2021
Latency Numbers Every Programmer Should Know
View latency.txt
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