jshen28

Python 3 extension example

Build

python3 setup.py build

Output: build/lib.macosx-10.11-x86_64-3.5/hello.cpython-35m-darwin.so

Run

Simple vsock setup for QEMU

Configuration

Host Kernel: rawhide 4.13.0-0.rc6.git4.2.fc28.x86_64 (on Fedora 24)

QEMU is mainline built from sources: QEMU emulator version 2.10.50 (v2.10.0-105-g223cd0e)

Guest: clear-17460-kvm.img (which has vsock support)

Overview

For those that are unfamiliar with the project, PyPy is an implementation of the Python language that features a JIT Compiler. I have noticed a huge performance benefit in some personal projects by switching to PyPy. I have always been curious how it would perform on a large and complex project like OpenStack, but my early experiments ran into massive roadblocks around broken dependencies.

It has been six months since I last looked, so I figured it was time to try it again. Support has come a long way and, now that lxml is working, we are close enough to get a Proof-of-Concept running. Read on for instructions on running nova with PyPy.

Preparation

Start out with a base ubuntu 12.04 (precise) install and run devstack. I won't go through the details of getting devstack running here, because there are already instructions on the devstack site.

6ee73781-6d8c-40f7-b953-ecf30f4a3309] Failed to build and run instance: libvirt.libvirtError: internal error: Process exited prior to exec: libvirt:  error : Unable to move /dev/termination-log mount to /run/libvirt/qemu/631-instance-0000c3a2.termination-log: Permission denied
2021-03-17 04:19:59.124 1255432 ERROR nova.compute.manager [instance: 6ee73781-6d8c-40f7-b953-ecf30f4a3309] Traceback (most recent call last):
2021-03-17 04:19:59.124 1255432 ERROR nova.compute.manager [instance: 6ee73781-6d8c-40f7-b953-ecf30f4a3309]   File "/var/lib/openstack/lib/python3.8/site-packages/nova/compute/manager.py", line 2394, in _build_and_run_instance
2021-03-17 04:19:59.124 1255432 ERROR nova.compute.manager [instance: 6ee73781-6d8c-40f7-b953-ecf30f4a3309]     self.driver.spawn(context, instance, image_meta,
2021-03-17 04:19:59.124 1255432 ERROR nova.compute.manager [instance: 6ee73781-6d8c-40f7-b953-ecf30f4a3309]   File "/var/lib/openstack/lib/python3.8/site-packages/nova/virt/libvirt/driver.py", line 3753, in s

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	// @match ://so.csdn.net/so/search
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	#include "list.h"
	#include "stdlib.h"
	#include "stdio.h"
	#include "stddef.h"

	typedef struct component {
	int id;

	// This is used to link components together in their list
	struct list_head list_node;

	sudo apt-get install git g++ gcc automake autoconf libtool make gcc libc-dev libssl-dev pkg-config libtasn1-6-dev libjson-glib-dev expect gawk socat libseccomp-dev -y
	cd ~
	git clone https://github.com/stefanberger/swtpm.git
	git clone https://github.com/stefanberger/libtpms.git
	cd libtpms
	./autogen.sh --prefix=/usr --with-tpm2 --with-openssl
	make
	sudo make install
	cd ../swtpm
	./autogen.sh --prefix=/usr

	#include <stdio.h>
	#include <unistd.h>
	#include <sys/types.h>
	#include <sys/socket.h>
	#include <memory.h>
	#include <linux/types.h>
	#include <linux/netlink.h>
	#include <linux/rtnetlink.h>

	struct nl_req_s {

	/*
	iflist.c : retrieve network interface information thru netlink sockets

	(c) Jean Lorchat @ Internet Initiative Japan - Innovation Institute

	v1.0 : initial version - Feb 19th 2010

	This file was obtained at the following address :
	http://www.iijlab.net/~jean/iflist.c