alexdong’s gists

alexdong / ambush.sh

Last active December 19, 2015 23:29

Some short-lifed Android apps will quit before we had a chance to attach strace to it and inspect its internal state. So this script will put itself in an endless loop and wait for the certain process to show up. Once the process appears, it will attach the strace to it and start writing output to a log file.

	#!/system/bin/sh

	#
	# Attach strace to a process as soon as it starts up.
	#
	# Some short-lifed Android apps will quit before we
	# had a chance to attach strace to it and inspect its
	# internal state. So this script will put itself in
	# an endless loop and wait for the certain process to
	# show up. Once the process appears, it will attach

alexdong / git archeology

Last active December 17, 2015 14:39

Git commands to grep through historical patches

git log --no-merges --format="%ad %s" -i --grep=invite

alexdong / MongoDB collection stats.js

Created March 18, 2011 11:34

	> db.stats()
	{
	"collections" : 31,
	"objects" : 33273261,
	"avgObjSize" : 276.750695520947,
	"dataSize" : 9208398124,
	"storageSize" : 10635470336,
	"numExtents" : 242,
	"indexes" : 58,
	"indexSize" : 10991725824,

alexdong / punch_card_visualizing_chi.html

Created November 16, 2010 13:53

Django template for visualizing Customer Happiness Index

	{% load usage %}
	<html lang="en">
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
	<title>Trunkly · Punch Chart</title>
	<style>
	body { margin: 30px auto; width: 800px; background-color:#333; }
	div { background-color: green; }
	a { color: #eee; font-size:11px; text-decoration:none; }
	</style>

alexdong / setup_boost_python.sh

Created July 28, 2010 13:20

	#!/bin/sh

	# the basic boost library
	sudo apt-get install libboost-dev

	# install the boost.python library
	sudo apt-get install libboost-python-dev

	# install the extra libraries we need
	sudo apt-get install libboost-date-time-dev

alexdong / perf.py

Created July 28, 2010 13:09

	#!/usr/bin/env python

	import plumrain

	s = "2010-10-9 8:12:00"
	print plumrain.utc_date_str_to_int(s, 10)

alexdong / plumrain.cc

Created July 28, 2010 13:07

	#include "boost/date_time/gregorian/gregorian.hpp"
	#include "boost/date_time/posix_time/posix_time.hpp"
	#include <boost/python.hpp>

	#include <iostream>
	#include <string>

	int utc_date_str_to_int(const char* s, int offset) {
	using namespace boost::gregorian;
	using namespace boost::posix_time;

alexdong / boost-build.jam

Created July 28, 2010 13:06

	# Edit this path to point at the tools/build/v2 subdirectory of your
	# Boost installation. Absolute paths work, too.
	boost-build /usr/share/doc/libboost1.40-doc/examples/tools/build/v2/ ;

alexdong / Jamroot

Created July 28, 2010 13:05

	using python ;

	# Specify that the boost-python library exists under the name
	# boost_python. That is, because the library was installed at the
	# standard search path as /usr/lib/libboost_python.so, bjam will find
	# it automatically. No need to specify the absolute path.
	# lib libboost_python : : <name>boost_python-mt ;
	lib libboost_python : : <name>boost_python ;
	lib libboost_date_time : : <name>boost_date_time ;

alexdong / RangeServer log over 13 seconds

Created July 27, 2010 09:52

	alexdong@clifton % date /opt/hypertable/current/log
	Tue Jul 27 09:53:56 UTC 2010
	alexdong@clifton % tail -n 5 Hypertable.RangeServer.log /opt/hypertable/current/log
	STAT hits[550,2009-02-17 02:06:56,14739441..633,2009-10-27 22:20:04,7783332](default) cumulative_size 201426188 <= prune_threshold 867668958
	STAT hits[633,2009-10-27 22:20:04,7783332..7428,2009-01-26 22:59:26,4197051](default) cumulative_size 201426188 <= prune_threshold 867668958
	STAT hits[7428,2009-01-26 22:59:26,4197051..86059,2010-02-02 09:25:06,56699891](default) cumulative_size 353111255 <= prune_threshold 867668958
	STAT hits[86059,2010-02-02 09:25:06,56699891..��](default) cumulative_size 353111255 <= prune_threshold 867668958
	1280224430 INFO Hypertable.RangeServer : (/root/src/hypertable/src/cc/Hypertable/RangeServer/RangeServer.cc:2619) Memory Usage: 1170841532 bytes
	alexdong@clifton % date

Alex Dong alexdong