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| author | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2014-12-06 21:53:39 -0500 |
|---|---|---|
| committer | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2015-10-10 23:05:44 -0400 |
| commit | 9f35e8b45894f7e201878e128ca371662a9dc63d (patch) | |
| tree | 780276c43ce4e6209829f393260ea7d33e7db75b /src/journal/compress.c | |
| parent | 4b5bc5396c090ee41c45cab9052372d296c4a2f4 (diff) | |
test-compress-benchmark: test three cases (zeros, simple, semi-random)
Existing test would use highly-compressible repeatable
input. Two types of input are added:
- zeros
- random blocks interspersed with zeros
The idea is to get more information about behaviour in various cases.
On Intel Xeon the results are:
% ./test-compress-benchmark
XZ/zeros: compressed & decompressed 2535301373 bytes in 32.56s (74.26MiB/s), mean compresion 99.96%, skipped 3160 bytes
LZ4/zeros: compressed & decompressed 2535304362 bytes in 1.16s (2088.69MiB/s), mean compresion 99.60%, skipped 171 bytes
XZ/simple: compressed & decompressed 2535300963 bytes in 30.42s (79.48MiB/s), mean compresion 99.95%, skipped 3570 bytes
LZ4/simple: compressed & decompressed 2535303543 bytes in 1.22s (1978.86MiB/s), mean compresion 99.60%, skipped 990 bytes
XZ/random: compressed & decompressed 381756649 bytes in 60.02s (6.07MiB/s), mean compresion 39.64%, skipped 27813723 bytes
LZ4/random: compressed & decompressed 2507385036 bytes in 0.97s (2477.52MiB/s), mean compresion 54.77%, skipped 27919497 bytes
If someone has ideas for more realistic test cases, they can be easily
added to this framework.
Diffstat (limited to 'src/journal/compress.c')
0 files changed, 0 insertions, 0 deletions