public static void test() throws IOException {
// do a sequence 1m of each of insert/read/update
// inserts
long LOOPCOUNT = 100 * 1000L;
Random rand = new Random();
long start = System.currentTimeMillis();
BigDataStuff value = new BigDataStuff(0);
for (long i = 0; i < LOOPCOUNT; i++) {
long current = rand.nextInt(Highwatermark.get());
value.x = current;
value.y.setLength(0);
value.y.append(current);
TheSharedMap.put(i, value);
}
long now = System.currentTimeMillis();
System.out.println(
"Time taken to insert 100k entries " + ((now - start) / 1000.0) + " seconds");
int count = 0;
start = System.currentTimeMillis();
for (long i = 0; i < LOOPCOUNT; i++) {
long keyval = rand.nextInt(Highwatermark.get());
count++;
BigDataStuff stuff = TheSharedMap.get(keyval);
if (stuff == null) {
System.out.println("hit an empty at key " + keyval);
}
}
now = System.currentTimeMillis();
System.out.println(
"Time taken to read "
+ count
+ " entries of 100k attempts "
+ ((now - start) / 1000.0)
+ " seconds");
start = System.currentTimeMillis();
count = 0;
for (long i = 0; i < LOOPCOUNT; i++) {
long keyval = rand.nextInt(Highwatermark.get());
BigDataStuff stuff = TheSharedMap.get(keyval);
if (stuff == null) {
System.out.println("hit an empty at key " + keyval);
} else {
count++;
stuff.x++;
stuff.y.append('1');
TheSharedMap.put(keyval, stuff);
}
}
now = System.currentTimeMillis();
System.out.println(
"Time taken to read+update "
+ count
+ " entries of 100k attempts "
+ ((now - start) / 1000.0)
+ " seconds");
}
public static void populate(int n) {
AffinitySupport.setThreadId();
long start = System.currentTimeMillis();
BigDataStuff value = new BigDataStuff(0);
for (long i = n; i < MAXSIZE; i += 4) {
if (n == 0 && i % (10 * 1000 * 1000) == 0) {
System.out.println(
"Now inserted to "
+ i
+ " seconds since start = "
+ ((System.currentTimeMillis() - start) / 1000L));
}
value.x = i;
value.y.setLength(0);
value.y.append(i);
TheSharedMap.put(i, value);
}
}