rxin

package spark.util

import java.io.{ByteArrayInputStream, ByteArrayOutputStream}

import scala.collection.mutable

import org.objectweb.asm.{ClassReader, MethodVisitor}
import org.objectweb.asm.commons.EmptyVisitor
import org.objectweb.asm.Opcodes._

rxin

def testWrite(path: String): Long = {
  val startTime = System.currentTimeMillis()
  val out = new java.io.FileWriter(path)
  var i = 1
  val bytes = " " * (1024 * 1024)
  while (i < 1000) {
    out.write(bytes)
    i += 1
  }
  out.close

rxin

/**
 * To compile:
 *  scalac -optimize ByteBufferPerf.scala
 *
 * JAVA_OPTS="-Xmx2g" scala IntArrayPerf 10
 *  49  62  48  45  48  45  48  50  47  45
 *
 * JAVA_OPTS="-Xmx2g" scala ByteBufferPerf 10
 *  479 491 484 480 484 481 477 477 472 473

rxin

#!/bin/bash

# From http://tech.serbinn.net/2010/shell-script-to-create-ramdisk-on-mac-os-x/
#

ARGS=2
E_BADARGS=99

if [ $# -ne $ARGS ] # correct number of arguments to the script;
then

rxin

################################################################################
# Step 1. Download wiki traffic log.
# from
#  https://s3.amazonaws.com/ampcamp/ampcamp-ecnu-2013/wikistats/part-00095.gz
# to
#  https://s3.amazonaws.com/ampcamp/ampcamp-ecnu-2013/wikistats/part-00168.gz
# Note that 095 and 168 are both 0 bytes. The sole purpose of their existence is
# to verify the downloads.

# NOTE THAT THE FOLLOWING SCRIPT STARTS wget AS BACKGROUND PROCESSES.