peo3’s gists

peo3 / cgconfig.conf

Created January 30, 2011 14:47

peo3's libcgroup settings

peo3 / linux.c

Created April 21, 2011 11:51

An extension module to call eventfd(2) in python

	/*
	* Usage in python:
	*
	* import linux
	* efd = linux.eventfd(0, 0)
	* ...
	* ret = struct.unpack('Q', os.read(efd, 8))
	* ...
	* linux.close(efd)
	*/

peo3 / cgroup_event_listener.py

Created April 21, 2011 14:00

A python script doing the same operations as cgroup_event_listener.c

	#!/usr/bin/python

	# Usage: sudo python cgroup_event_listener.py /sys/fs/cgroup/memory/hoge/memory.usage_in_bytes 263M

	import sys
	import os, os.path
	import struct

	import linux

peo3 / setup_lxc_rootfs_fedora15.sh

Created August 12, 2011 14:52

How to boot up Fedora 15 with systemd inside Libvirt LXC

	#!/bin/sh

	# Setup a rootfs of Fedora 15 for libvirt lxc
	#
	# The rootfs is based on http://download.openvz.org/template/precreated/fedora-15-x86_64.tar.gz
	#
	# See also
	# - http://www.mail-archive.com/[email protected]/msg01707/lxc-fedora.in

	if [ $# != 1 ]; then

peo3 / configure

Created October 23, 2011 16:04

Warning about -std=gnu99 in configure

	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gl_cv_header_wchar_h_correct_inline" >&5
	$as_echo "$gl_cv_header_wchar_h_correct_inline" >&6; }
	if test $gl_cv_header_wchar_h_correct_inline = no; then
	as_fn_error $? "<wchar.h> cannot be used with this compiler ($CC $CFLAGS $CPPFLAGS).
	This is a known interoperability problem of glibc <= 2.5 with gcc >= 4.3 in
	C99 mode. You have four options:
	- Add the flag -fgnu89-inline to CC and reconfigure, or
	- Fix your include files, using parts of
	<http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=b037a293a48718af30d706c2e18c929d0e69a621>, or
	- Use a gcc version older than 4.3, or

peo3 / intellij-scalatest-memo.txt

Created January 6, 2012 12:41

Scala SBT IntelliJ IDEA ScalaTest設定でやったこと

	- brew install scala sbt
	- mkdir -p scala/Hoge
	- cd scala/Hoge
	- sbt
	- vim build.sbt
	- cat build.sbt
	name := "Hoge"
	version := "0.1"
	scalaVersion := "2.9.0-1"
	libraryDependencies += "org.scalatest" % "scalatest_2.9.0" % "1.6.1"

peo3 / gist:1669870

Created January 24, 2012 12:07

ls ~/git

peo3 / store_bundle_in_sqlite3.java

Created February 11, 2012 11:51

Store an arbitrary Bundle object into a SQLite database ref: http://qiita.com/items/2386

	/* store a bundle */
	Bundle bundle = // get a bundle from somewhere
	final Parcel parcel = Parcel.obtain();
	bundle.writeToParcel(parcel, 0);
	byte[] bundleBytes = parcel.marshall();
	parcel.recycle();

	ContentValues values = new ContentValues();
	values.put("bundle", bundleBytes);
	SQLiteDatabase db = // create a db object

peo3 / Makefile

Created June 23, 2012 15:08

cgroup LKM example

	obj-m = cgroup-notifier-counter.o

	KVERSION = $(shell uname -r)

	all:
	make -C /lib/modules/$(KVERSION)/build M=$(PWD) modules
	clean:
	make -C /lib/modules/$(KVERSION)/build M=$(PWD) clean

peo3 / gist:3090225

Created July 11, 2012 12:55

cgutil pgrep

	[fedora17 cgroup-utils]$ cgutil pgrep systemd
	/: 1
	/system/systemd-logind.service: 576
	/system/systemd-journald.service: 359
	[fedora17 cgroup-utils]$ cgutil pgrep systemd -l -f
	/: 1 /usr/lib/systemd/systemd
	/: 1321 /bin/python /bin/cgutil pgrep systemd -l -f
	/system/systemd-logind.service: 576 /usr/lib/systemd/systemd-logind
	/system/dbus.service: 607 /bin/dbus-daemon --system --address=systemd: --nofork --systemd-activation
	/system/systemd-journald.service: 359 /usr/lib/systemd/systemd-journald