jjoergensen

Distributed Read-Write Mutex in Go

The default Go implementation of sync.RWMutex does not scale well to multiple cores, as all readers contend on the same memory location when they all try to atomically increment it. This gist explores an n-way RWMutex, also known as a "big reader" lock, which gives each CPU core its own RWMutex. Readers take only a read lock local to their core, whereas writers must take all locks in order.

jjoergensen

# You don't need Fog in Ruby or some other library to upload to S3 -- shell works perfectly fine
# This is how I upload my new Sol Trader builds (http://soltrader.net)
# Based on a modified script from here: http://tmont.com/blargh/2014/1/uploading-to-s3-in-bash

S3KEY="my aws key"
S3SECRET="my aws secret" # pass these in

function putS3
{
  path=$1

jjoergensen

If you see the error message below, you may need this patch:
  Undefined symbols for architecture x86_64:
    "_tun_close", referenced from:
        _tuntap_open in n2n.a(tuntap_osx.o)
  ld: symbol(s) not found for architecture x86_64


# How to use
If you got the source code from official repository, like me:
  svn co https://svn.ntop.org/svn/ntop/trunk/n2n

jjoergensen

# ...

include "dynamic_backends.vcl";

# ...