Skip to content

Instantly share code, notes, and snippets.

View Matts966's full-sized avatar
:octocat:
Coding

Matts966 Matts966

:octocat:
Coding
View GitHub Profile
@demmer
demmer / slack-messages-by-user.py
Created December 2, 2016 22:59
count slack messages posted to a channel by user
#!/usr/bin/python
'''
Script to count messages by user posted to a channel for a given date range.
Install:
# sudo pip install slackclient
Also you will need to obtain a slack API token:
https://api.slack.com/docs/oauth-test-tokens
@jboner
jboner / latency.txt
Last active May 12, 2025 05:04
Latency Numbers Every Programmer Should Know
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