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@lulalala
lulalala / ffmpeg_compile.sh
Created October 17, 2013 16:33
compile options for minial ffmpeg which can encode/decode from images to h264
# for x264
./configure --enable-static \
--disable-opencl \
--disable-avs \
--disable-cli \
--disable-ffms \
--disable-gpac \
--disable-lavf \
--disable-swscale \
--prefix=/usr/local/
@jboner
jboner / latency.txt
Last active July 27, 2024 12:32
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