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amrx101 / latency.txt
Created April 10, 2019 16:52 — forked from jboner/latency.txt
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
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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
@amrx101
amrx101 / Procfile
Created May 11, 2017 09:16 — forked from neara/Procfile
Celery Multiple Queues Setup
web: run-program gunicorn arena.wsgi
celery_beat: run-program celery -A arena beat -l info
celery1: run-program celery -A arena worker -Q default -l info --purge -n default_worker
celery2: run-program celery -A arena worker -Q feeds -l info --purge -n feeds_worker
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/**
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