commit 77c03244382368a1b63196ce42ff6f1607762a60
author Benoit Lize <lizeb@chromium.org> Wed Aug 01 09:57:15 2018
committer Commit Bot <commit-bot@chromium.org> Wed Aug 01 09:57:15 2018
tree aef8d700dbb39ea7421a145f9453af58acfcb73c
parent df0970e7ac5c116d47ab0699776ad707ccf1f0d9

tools/android: Benchmark tool for in-memory compression.

Adds a tool that:
- Reads a file from disk
- Compresses and decompresses it using {zlib,snappy}

Example output (Android Go, Gobo):

Gzip
Size = 4096
Compression
  Compression ratio = 2.46154
  Throughput = 4.97989MB/s
  Latency (size = 4096) = 822.508us
Decompression
  Throughput = 41.4281MB/s
  Latency (size = 4096) = 98.87us
Size = 8192
Compression
  Compression ratio = 3.3166
  Throughput = 7.32629MB/s
  Latency (size = 8192) = 1118.16us
Decompression
  Throughput = 63.3125MB/s
  Latency (size = 8192) = 129.39us
Size = 16384
Compression
  Compression ratio = 4.73937
  Throughput = 13.3032MB/s
  Latency (size = 16384) = 1231.58us
Decompression
  Throughput = 80.3413MB/s
  Latency (size = 16384) = 203.93us
Size = 32768
Compression
  Compression ratio = 5.51279
  Throughput = 10.4441MB/s
  Latency (size = 32768) = 3137.45us
Decompression
  Throughput = 108.485MB/s
  Latency (size = 32768) = 302.05us
Size = 65536
Compression
  Compression ratio = 5.36828
  Throughput = 15.3562MB/s
  Latency (size = 65536) = 4267.71us
Decompression
  Throughput = 113.76MB/s
  Latency (size = 65536) = 576.09us
Size = 131072
Compression
  Compression ratio = 5.42517
  Throughput = 10.1509MB/s
  Latency (size = 131072) = 12912.4us
Decompression
  Throughput = 114.958MB/s
  Latency (size = 131072) = 1140.17us

[...]

Snappy
Size = 4096
Compression
  Compression ratio = 1.78787
  Throughput = 53.2261MB/s
  Latency (size = 4096) = 76.9547us
Decompression
  Throughput = 161.323MB/s
  Latency (size = 4096) = 25.39us
Size = 8192
Compression
  Compression ratio = 2.44246
  Throughput = 63.8232MB/s
  Latency (size = 8192) = 128.355us
Decompression
  Throughput = 130.052MB/s
  Latency (size = 8192) = 62.99us
Size = 16384
Compression
  Compression ratio = 3.49339
  Throughput = 70.1383MB/s
  Latency (size = 16384) = 233.596us
Decompression
  Throughput = 173.762MB/s
  Latency (size = 16384) = 94.29us
Size = 32768
Compression
  Compression ratio = 4.24566
  Throughput = 88.4845MB/s
  Latency (size = 32768) = 370.325us
Decompression
  Throughput = 194.561MB/s
  Latency (size = 32768) = 168.42us
Size = 65536
Compression
  Compression ratio = 4.16339
  Throughput = 91.1387MB/s
  Latency (size = 65536) = 719.08us
Decompression
  Throughput = 183.827MB/s
  Latency (size = 65536) = 356.51us
Size = 131072
Compression
  Compression ratio = 4.16009
  Throughput = 87.5235MB/s
  Latency (size = 131072) = 1497.56us
Decompression
  Throughput = 171.56MB/s
  Latency (size = 131072) = 764us

Bug: 860693, 837659
Change-Id: I9887dd4b470ab1acf6d56b717fb73d33439ad453
Reviewed-on: https://chromium-review.googlesource.com/1127991
Commit-Queue: Benoit L <lizeb@chromium.org>
Reviewed-by: Egor Pasko (futex_wait(&secret))) <pasko@chromium.org>
Reviewed-by: Adam Langley <agl@chromium.org>
Reviewed-by: Victor Costan <pwnall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#579743}