public void RavenNominaleTest()
{
const int size = 16 * Mem.KB;
var count = size / sizeof(DoubleEntry);
var chunk = Factory.CreateDoubleChunk(count);
var buffer = new byte[size];
var result = new DoubleEntry[count];
fixed(byte *o = buffer)
{
int compressedSize;
fixed(DoubleEntry *i = chunk)
{
var pi = (byte *)i;
var po = o;
compressedSize = Lz4Raven.Encode64(ref pi, ref po, size, (int)Lz4Raven.MaximumOutputLength(size));
}
Console.WriteLine("Compression ratio: x {0}", size / (double)compressedSize);
fixed(DoubleEntry *r = result)
Lz4Raven.Decode64(o, compressedSize, (byte *)r, size, true);
}
result.Check(chunk);
}
public void NominaleTest()
{
const int size = 16 * Mem.KB;
var count = size / sizeof(DoubleEntry);
var chunk = Factory.CreateDoubleChunk(count);
var buffer = new byte[size];
var result = new DoubleEntry[count];
fixed(byte *o = buffer)
{
int compressedSize;
fixed(DoubleEntry *i = chunk)
{
var pi = (byte *)i;
var po = o;
compressedSize = Lz4.LZ4_compress_fast(pi, po, size, (int)Lz4.MaximumOutputLength(size), 1);
}
Console.WriteLine("Compression ratio: x {0}", size / (double)compressedSize);
fixed(DoubleEntry *r = result)
{
var ip = o;
var op = (byte *)r;
Lz4.LZ4_decompress_fast(ref ip, ref op, compressedSize);
}
}
result.Check(chunk);
}
public void RavenCompressWithLowerBlockTest()
{
const int size = 16 * Mem.KB;
const int writeBlockSize = 1 * Mem.KB;
var count = size / sizeof(DoubleEntry);
var chunk = Factory.CreateDoubleChunk(count);
var buffer = new byte[size];
var result = new DoubleEntry[count];
fixed(byte *o = buffer)
{
var compressedSize = 0;
fixed(DoubleEntry *i = chunk)
{
var pi = (byte *)i;
var pEnd = pi + size;
var po = o;
while (pi < pEnd)
{
var wrote = Lz4Raven.Encode64(ref pi, ref po, (int)(pEnd - pi), size, writeBlockSize, 1);
//Assert.LessOrEqual(wrote, writeBlockSize);
compressedSize += wrote;
}
}
Console.WriteLine("Compression ratio: x {0}", size / (double)compressedSize);
fixed(DoubleEntry *r = result)
{
var iPtr = o;
var oPtr = (byte *)r;
var inputLength = compressedSize;
var wrote = 0;
while (wrote < size)
{
wrote += Lz4Raven.Decode64(ref iPtr, inputLength, ref oPtr, size - wrote, writeBlockSize);
}
}
}
result.Check(chunk);
}
public void RavenUncompressWithLowerBlocksTest()
{
const int size = 16 * Mem.KB;
const int writeBlockSize = 4 * Mem.KB;
var count = size / sizeof(DoubleEntry);
var chunk = Factory.CreateDoubleChunk(count);
var buffer = new byte[size];
var result = new DoubleEntry[count];
fixed(byte *o = buffer)
{
int compressedSize;
fixed(DoubleEntry *i = chunk)
{
var pi = (byte *)i;
var po = o;
compressedSize = Lz4Raven.Encode64(ref pi, ref po, size, (int)Lz4Raven.MaximumOutputLength(size));
}
Console.WriteLine("Compression ratio: x {0}", size / (double)compressedSize);
fixed(DoubleEntry *r = result)
{
var iPtr = o;
var oPtr = (byte *)r;
var inputLength = compressedSize;
var wrote = 0;
while (wrote < size)
{
wrote += Lz4Raven.Decode64(ref iPtr, inputLength, ref oPtr, size - wrote, writeBlockSize);
}
}
}
result.Check(chunk);
}
public void RavenUncompressComparePerf()
{
const int size = 4 * Mem.KB;
var readSizes = new [] { 1, 2, 4, 8, 16 };
const int iterations = 10000;
var count = size / sizeof(DoubleEntry);
var chunk = Factory.CreateDoubleChunk(count);
var buffer = new byte[size];
var result = new DoubleEntry[count];
fixed(byte *o = buffer)
{
int compressedSize;
fixed(DoubleEntry *i = chunk)
{
var pi = (byte *)i;
var po = o;
compressedSize = Lz4Raven.Encode64(ref pi, ref po, size, (int)Lz4Raven.MaximumOutputLength(size));
}
Console.WriteLine("Compression ratio: x {0}", size / (double)compressedSize);
fixed(DoubleEntry *r = result)
{
Lz4Raven.Decode64(o, compressedSize, (byte *)r, size, true);
// Jitter purpose
for (var i = 0; i < 10; i++)
{
var iPtr = o;
var oPtr = (byte *)r;
var writeBlockSize = readSizes[0] * Mem.KB;
var wrote = 0;
while (wrote < size)
{
wrote += Lz4Raven.Decode64(ref iPtr, compressedSize, ref oPtr, size - wrote, writeBlockSize);
}
}
var sw = Stopwatch.StartNew();
for (var i = 0; i < iterations; i++)
{
Lz4Raven.Decode64(o, compressedSize, (byte *)r, size, true);
}
sw.Stop();
Console.WriteLine("Match: {0} µs", sw.Elapsed.TotalMilliseconds / iterations * 1e3);
result.Check(chunk);
for (var j = 0; j < readSizes.Length; j++)
{
var writeBlockSize = readSizes[j] * Mem.KB;
sw = Stopwatch.StartNew();
for (var i = 0; i < iterations; i++)
{
var iPtr = o;
var oPtr = (byte *)r;
var wrote = 0;
while (wrote < size)
{
wrote += Lz4Raven.Decode64(ref iPtr, compressedSize, ref oPtr, size - wrote, writeBlockSize);
}
}
sw.Stop();
Console.WriteLine("Size {0} KB: {1} µs", readSizes[j], sw.Elapsed.TotalMilliseconds / iterations * 1e3);
result.Check(chunk);
}
}
}
}