Author: nextgens
Date: 2009-04-14 22:16:22 +0000 (Tue, 14 Apr 2009)
New Revision: 26811
Modified:
trunk/freenet/test/freenet/client/CodeTest.java
Log:
fix the FEC benchmarking code:
[junit] Getting ready for benchmarking encode()
[junit] Getting ready for benchmarking decode()
[junit] Native8Code[k=192,n=256]
[junit] PureCode[k=192,n=256]
[junit] Native code took 92.0ms whereas java's code took 321.0ms to encode()
[junit] Native code took 94.0ms whereas java's code took 334.0ms to decode()
Modified: trunk/freenet/test/freenet/client/CodeTest.java
===================================================================
--- trunk/freenet/test/freenet/client/CodeTest.java 2009-04-14 22:06:10 UTC
(rev 26810)
+++ trunk/freenet/test/freenet/client/CodeTest.java 2009-04-14 22:16:22 UTC
(rev 26811)
@@ -53,18 +53,47 @@
for (int i = 0; i < KK; i++)
index[i] = lim - i - 1;
- System.out.println("Getting ready for benchmarking");
+ byte[] src = new byte[KK * PACKET_SIZE];
+ Util.rand.nextBytes(src);
+ Buffer[] srcBufs = new Buffer[KK];
+ for (int i = 0; i < srcBufs.length; i++)
+ srcBufs[i] = new Buffer(src, i * PACKET_SIZE,
PACKET_SIZE);
+
+ byte[] repair = new byte[KK * PACKET_SIZE];
+ Buffer[] repairBufs = new Buffer[KK];
+ for (int i = 0; i < repairBufs.length; i++) {
+ repairBufs[i] = new Buffer(repair, i * PACKET_SIZE,
PACKET_SIZE);
+ }
+
+ int[] indexBackup = new int[index.length];
+ System.arraycopy(index,0,indexBackup,0,index.length);
+
+ System.out.println("Getting ready for benchmarking encode()");
long t1 = System.currentTimeMillis();
- encodeDecode(maybeNative, maybeNative, index);
+ maybeNative.encode(srcBufs, repairBufs, index);
long t2 = System.currentTimeMillis();
- encodeDecode(pureCode, pureCode, index);
+ pureCode.encode(srcBufs, repairBufs, indexBackup);
long t3 = System.currentTimeMillis();
+ float dNativeEncode = t2 - t1;
+ float dPureEncode = t3 - t2;
+
+ Buffer[] repairBufs2 = repairBufs.clone();
+ System.arraycopy(repairBufs, 0, repairBufs2, 0,
repairBufs.length);
+ System.out.println("Getting ready for benchmarking decode()");
+ t1 = System.currentTimeMillis();
+ maybeNative.decode(repairBufs, index);
+ t2 = System.currentTimeMillis();
+ pureCode.decode(repairBufs2, indexBackup);
+ t3 = System.currentTimeMillis();
+
+ float dNativeDecode = t2 - t1;
+ float dPureDecode = t3 - t2;
+
System.out.println(maybeNative);
System.out.println(pureCode);
- long dNative = t2 - t1;
- long dPure = t3 - t2;
- System.out.println("Native code took "+dNative+"ms whereas
java's code took "+dPure+"ms.");
+ System.out.println("Native code took "+dNativeEncode+"ms
whereas java's code took "+dPureEncode+"ms to encode()");
+ System.out.println("Native code took "+dNativeDecode+"ms
whereas java's code took "+dPureDecode+"ms to decode()");
}
public void testSimpleRev() {
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