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.
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# 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 |
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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 |
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# ... | |
include "dynamic_backends.vcl"; | |
# ... |