eklitzke

Percona Server with XtraDB

Introduction

• 2010 InnoDB 5.1 announced, will first ship with MySQL 5.5.
• Historically InnoDB development lags while MySQL is trying to GA
• lots of things fixed in InnoDB since MySQL 5.0
• important note -- plugin version of InnoDB is not the default in 5.1

eklitzke

import os
import optparse
import signal
import time
import tornado.httpserver
import tornado.httpclient
import tornado.simple_httpclient
import tornado.curl_httpclient
import tornado.ioloop

eklitzke

import tornado.ioloop

loop = tornado.ioloop.IOLoop.instance()
def callback(*args):
    loop.add_callback(callback)
callback()
loop.start()

eklitzke

import optparse
import time

from tornado.ioloop import IOLoop

def main(iterations):
    loop = IOLoop.instance()
    counter = [0]
    def callback(*args):
        counter[0] += 1

eklitzke

/**
 * A FunctionTemplate is used to create functions at runtime. There
 * can only be one function created from a FunctionTemplate in a
 * context.  The lifetime of the created function is equal to the
 * lifetime of the context.  So in case the embedder needs to create
 * temporary functions that can be collected using Scripts is
 * preferred.
 *
 * A FunctionTemplate can have properties, these properties are added to the
 * function object when it is created.

eklitzke

/**
 * A FunctionTemplate is used to create functions at runtime. There
 * can only be one function created from a FunctionTemplate in a
 * context.  The lifetime of the created function is equal to the
 * lifetime of the context.  So in case the embedder needs to create
 * temporary functions that can be collected using Scripts is
 * preferred.
 *
 * A FunctionTemplate can have properties, these properties are added to the
 * function object when it is created.

eklitzke

1333743808.054205 --- SIGTERM (Terminated) @ 0 (0) ---
1333743808.054361 rt_sigreturn(0xf)     = -1 EINTR (Interrupted system call)
1333743808.054589 socket(PF_FILE, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 7
1333743808.054789 connect(7, {sa_family=AF_FILE, path="/dev/log"}, 110) = 0
1333743808.054988 sendto(7, "<38>Apr  6 13:23:28 sshd[2330]: "..., 64, MSG_NOSIGNAL, NULL, 0) = 64
1333743808.055198 close(7)              = 0
1333743808.055429 close(3)              = 0
1333743808.055670 close(4)              = 0
1333743808.055894 close(5)              = 0
1333743808.056061 close(6)              = 0

eklitzke

             1
           4   2
             3
           7   5
             6

1->2->3->4 forms a loop
3->5->6->7 forms a loop

4 and 5 are slaves of 3

eklitzke

#include <stdio.h>
#include <unistd.h>

int main(int argc, char **argv) {
  char buf[100];
  chdir("//");
  getcwd(buf, sizeof(buf));
  printf("%s\n", buf);
  return 0;
}

eklitzke

#include <assert.h>
#include <ctype.h>
#include <cxxabi.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <string>
#include <vector>