hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

benjamincharity

> Thank you for reaching out to Autonomous! I am sorry to hear that you are having some trouble with your SmartDesk
> but I will be glad to assist. It sounds like your system needs a "hard reset" can I please have you follow these
> steps thoroughly.

Reset Steps:
1. Unplug the desk for 20 seconds. Plug it back in. Wait a full 20 seconds.
2. Press the up and down buttons until the desk lowers all the way and beeps or 20 seconds pass.
3. Release both buttons.
4. Press the down buttons until the desk beeps one more time or 20 seconds pass.