jvranish

/* compile with:
on linux:   gcc -g stack_traces.c
on OS X:    gcc -g -fno-pie stack_traces.c
on windows: gcc -g stack_traces.c -limagehlp
*/

#include <signal.h>
#include <stdio.h>
#include <assert.h>

jboner

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