delta/go-git.git/src/compress/flate/testdata, branch dev.debug github.com: golang/go compress/flate: use uncompressed if dynamic encoding is larger 2016-04-18T02:30:46+00:00 Klaus Post klauspost@gmail.com 2016-04-10T10:00:13+00:00 6ec481b06c1ceba5792e355ca45f7476bb78f21f This adds size calculation to "dynamic" writes. This ensures that if dynamic Huffman encoding is bigger, or only slightly smaller than raw data, the block is written uncompressed. To minimize the code duplication of this function, the size calculation has been moved to separate functions. Since I was modifying these calculations, I changed "int64" size calculations to "int". Blocks are of very limited size, so there is not any risk of overflows. This should mainly improve 32 bit performance, but amd64 also gets a slight boost: name old time/op new time/op delta EncodeDigitsHuffman1e4-8 49.9µs ± 1% 49.3µs ± 1% -1.21% (p=0.000 n=10+10) EncodeDigitsHuffman1e5-8 476µs ± 1% 471µs ± 3% ~ (p=0.218 n=10+10) EncodeDigitsHuffman1e6-8 4.80ms ± 2% 4.75ms ± 2% ~ (p=0.243 n=10+9) EncodeDigitsSpeed1e4-8 305µs ± 3% 300µs ± 1% -1.86% (p=0.005 n=10+10) EncodeDigitsSpeed1e5-8 3.67ms ± 2% 3.58ms ± 1% -2.29% (p=0.000 n=9+8) EncodeDigitsSpeed1e6-8 38.3ms ± 2% 37.0ms ± 1% -3.45% (p=0.000 n=9+9) EncodeDigitsDefault1e4-8 361µs ± 2% 353µs ± 1% -2.21% (p=0.000 n=10+10) EncodeDigitsDefault1e5-8 5.24ms ± 2% 5.19ms ± 2% ~ (p=0.105 n=10+10) EncodeDigitsDefault1e6-8 56.5ms ± 3% 55.1ms ± 1% -2.42% (p=0.001 n=10+10) EncodeDigitsCompress1e4-8 362µs ± 2% 358µs ± 2% ~ (p=0.123 n=10+10) EncodeDigitsCompress1e5-8 5.26ms ± 3% 5.20ms ± 1% ~ (p=0.089 n=10+10) EncodeDigitsCompress1e6-8 56.0ms ± 4% 55.0ms ± 1% ~ (p=0.065 n=10+9) EncodeTwainHuffman1e4-8 70.9µs ± 3% 67.6µs ± 2% -4.59% (p=0.000 n=10+10) EncodeTwainHuffman1e5-8 556µs ± 2% 533µs ± 1% -4.20% (p=0.000 n=10+10) EncodeTwainHuffman1e6-8 5.54ms ± 3% 5.29ms ± 1% -4.37% (p=0.000 n=10+9) EncodeTwainSpeed1e4-8 294µs ± 3% 293µs ± 1% ~ (p=0.965 n=10+8) EncodeTwainSpeed1e5-8 2.59ms ± 2% 2.56ms ± 1% ~ (p=0.353 n=10+10) EncodeTwainSpeed1e6-8 25.6ms ± 1% 24.9ms ± 1% -2.62% (p=0.000 n=9+10) EncodeTwainDefault1e4-8 419µs ± 2% 417µs ± 1% ~ (p=0.780 n=10+9) EncodeTwainDefault1e5-8 6.23ms ± 4% 6.16ms ± 1% ~ (p=0.218 n=10+10) EncodeTwainDefault1e6-8 66.2ms ± 2% 65.7ms ± 1% ~ (p=0.529 n=10+10) EncodeTwainCompress1e4-8 426µs ± 1% 428µs ± 2% ~ (p=0.549 n=9+10) EncodeTwainCompress1e5-8 6.80ms ± 1% 6.85ms ± 3% ~ (p=0.156 n=9+10) EncodeTwainCompress1e6-8 74.6ms ± 3% 73.8ms ± 2% ~ (p=0.280 n=10+10) name old speed new speed delta EncodeDigitsHuffman1e4-8 200MB/s ± 1% 203MB/s ± 1% +1.23% (p=0.000 n=10+10) EncodeDigitsHuffman1e5-8 210MB/s ± 1% 212MB/s ± 3% ~ (p=0.356 n=10+9) EncodeDigitsHuffman1e6-8 208MB/s ± 2% 210MB/s ± 2% ~ (p=0.243 n=10+9) EncodeDigitsSpeed1e4-8 32.8MB/s ± 3% 33.4MB/s ± 1% +1.88% (p=0.005 n=10+10) EncodeDigitsSpeed1e5-8 27.2MB/s ± 2% 27.9MB/s ± 1% +2.60% (p=0.000 n=10+8) EncodeDigitsSpeed1e6-8 26.1MB/s ± 2% 27.0MB/s ± 1% +3.56% (p=0.000 n=9+9) EncodeDigitsDefault1e4-8 27.7MB/s ± 2% 28.4MB/s ± 1% +2.24% (p=0.000 n=10+10) EncodeDigitsDefault1e5-8 19.1MB/s ± 2% 19.3MB/s ± 2% ~ (p=0.101 n=10+10) EncodeDigitsDefault1e6-8 17.7MB/s ± 3% 18.1MB/s ± 1% +2.46% (p=0.001 n=10+10) EncodeDigitsCompress1e4-8 27.6MB/s ± 2% 27.9MB/s ± 2% ~ (p=0.119 n=10+10) EncodeDigitsCompress1e5-8 19.0MB/s ± 3% 19.2MB/s ± 1% ~ (p=0.085 n=10+10) EncodeDigitsCompress1e6-8 17.9MB/s ± 4% 18.1MB/s ± 3% ~ (p=0.110 n=10+10) EncodeTwainHuffman1e4-8 141MB/s ± 3% 148MB/s ± 2% +4.79% (p=0.000 n=10+10) EncodeTwainHuffman1e5-8 180MB/s ± 2% 188MB/s ± 1% +4.38% (p=0.000 n=10+10) EncodeTwainHuffman1e6-8 181MB/s ± 3% 189MB/s ± 1% +4.54% (p=0.000 n=10+9) EncodeTwainSpeed1e4-8 34.0MB/s ± 3% 34.1MB/s ± 1% ~ (p=0.948 n=10+8) EncodeTwainSpeed1e5-8 38.7MB/s ± 2% 39.0MB/s ± 1% ~ (p=0.353 n=10+10) EncodeTwainSpeed1e6-8 39.1MB/s ± 1% 40.1MB/s ± 1% +2.68% (p=0.000 n=9+10) EncodeTwainDefault1e4-8 23.9MB/s ± 2% 24.0MB/s ± 1% ~ (p=0.734 n=10+9) EncodeTwainDefault1e5-8 16.0MB/s ± 4% 16.2MB/s ± 1% ~ (p=0.210 n=10+10) EncodeTwainDefault1e6-8 15.1MB/s ± 2% 15.2MB/s ± 1% ~ (p=0.515 n=10+10) EncodeTwainCompress1e4-8 23.5MB/s ± 1% 23.4MB/s ± 2% ~ (p=0.536 n=9+10) EncodeTwainCompress1e5-8 14.7MB/s ± 1% 14.6MB/s ± 3% ~ (p=0.138 n=9+10) EncodeTwainCompress1e6-8 13.4MB/s ± 3% 13.5MB/s ± 2% ~ (p=0.239 n=10+10) This improves "random input" to the dynamic writer, which is why the test data is updated. The output size goes from 1051 to 1005 bytes. Change-Id: I3ee11d2d2511b277d2dd16734aeea07c98bca450 Reviewed-on: https://go-review.googlesource.com/21757 Reviewed-by: Joe Tsai <joetsai@digital-static.net> Run-TryBot: Joe Tsai <joetsai@digital-static.net> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Nigel Tao <nigeltao@golang.org> 
This adds size calculation to "dynamic" writes.
This ensures that if dynamic Huffman encoding is bigger,
or only slightly smaller than raw data, the block is written
uncompressed.

To minimize the code duplication of this function, the
size calculation has been moved to separate functions.

Since I was modifying these calculations, I changed "int64"
size calculations to "int". Blocks are of very limited size,
so there is not any risk of overflows.
This should mainly improve 32 bit performance, but amd64 also
gets a slight boost:

name                       old time/op    new time/op    delta
EncodeDigitsHuffman1e4-8     49.9µs ± 1%    49.3µs ± 1%  -1.21%  (p=0.000 n=10+10)
EncodeDigitsHuffman1e5-8      476µs ± 1%     471µs ± 3%    ~     (p=0.218 n=10+10)
EncodeDigitsHuffman1e6-8     4.80ms ± 2%    4.75ms ± 2%    ~      (p=0.243 n=10+9)
EncodeDigitsSpeed1e4-8        305µs ± 3%     300µs ± 1%  -1.86%  (p=0.005 n=10+10)
EncodeDigitsSpeed1e5-8       3.67ms ± 2%    3.58ms ± 1%  -2.29%    (p=0.000 n=9+8)
EncodeDigitsSpeed1e6-8       38.3ms ± 2%    37.0ms ± 1%  -3.45%    (p=0.000 n=9+9)
EncodeDigitsDefault1e4-8      361µs ± 2%     353µs ± 1%  -2.21%  (p=0.000 n=10+10)
EncodeDigitsDefault1e5-8     5.24ms ± 2%    5.19ms ± 2%    ~     (p=0.105 n=10+10)
EncodeDigitsDefault1e6-8     56.5ms ± 3%    55.1ms ± 1%  -2.42%  (p=0.001 n=10+10)
EncodeDigitsCompress1e4-8     362µs ± 2%     358µs ± 2%    ~     (p=0.123 n=10+10)
EncodeDigitsCompress1e5-8    5.26ms ± 3%    5.20ms ± 1%    ~     (p=0.089 n=10+10)
EncodeDigitsCompress1e6-8    56.0ms ± 4%    55.0ms ± 1%    ~      (p=0.065 n=10+9)
EncodeTwainHuffman1e4-8      70.9µs ± 3%    67.6µs ± 2%  -4.59%  (p=0.000 n=10+10)
EncodeTwainHuffman1e5-8       556µs ± 2%     533µs ± 1%  -4.20%  (p=0.000 n=10+10)
EncodeTwainHuffman1e6-8      5.54ms ± 3%    5.29ms ± 1%  -4.37%   (p=0.000 n=10+9)
EncodeTwainSpeed1e4-8         294µs ± 3%     293µs ± 1%    ~      (p=0.965 n=10+8)
EncodeTwainSpeed1e5-8        2.59ms ± 2%    2.56ms ± 1%    ~     (p=0.353 n=10+10)
EncodeTwainSpeed1e6-8        25.6ms ± 1%    24.9ms ± 1%  -2.62%   (p=0.000 n=9+10)
EncodeTwainDefault1e4-8       419µs ± 2%     417µs ± 1%    ~      (p=0.780 n=10+9)
EncodeTwainDefault1e5-8      6.23ms ± 4%    6.16ms ± 1%    ~     (p=0.218 n=10+10)
EncodeTwainDefault1e6-8      66.2ms ± 2%    65.7ms ± 1%    ~     (p=0.529 n=10+10)
EncodeTwainCompress1e4-8      426µs ± 1%     428µs ± 2%    ~      (p=0.549 n=9+10)
EncodeTwainCompress1e5-8     6.80ms ± 1%    6.85ms ± 3%    ~      (p=0.156 n=9+10)
EncodeTwainCompress1e6-8     74.6ms ± 3%    73.8ms ± 2%    ~     (p=0.280 n=10+10)

name                       old speed      new speed      delta
EncodeDigitsHuffman1e4-8    200MB/s ± 1%   203MB/s ± 1%  +1.23%  (p=0.000 n=10+10)
EncodeDigitsHuffman1e5-8    210MB/s ± 1%   212MB/s ± 3%    ~      (p=0.356 n=10+9)
EncodeDigitsHuffman1e6-8    208MB/s ± 2%   210MB/s ± 2%    ~      (p=0.243 n=10+9)
EncodeDigitsSpeed1e4-8     32.8MB/s ± 3%  33.4MB/s ± 1%  +1.88%  (p=0.005 n=10+10)
EncodeDigitsSpeed1e5-8     27.2MB/s ± 2%  27.9MB/s ± 1%  +2.60%   (p=0.000 n=10+8)
EncodeDigitsSpeed1e6-8     26.1MB/s ± 2%  27.0MB/s ± 1%  +3.56%    (p=0.000 n=9+9)
EncodeDigitsDefault1e4-8   27.7MB/s ± 2%  28.4MB/s ± 1%  +2.24%  (p=0.000 n=10+10)
EncodeDigitsDefault1e5-8   19.1MB/s ± 2%  19.3MB/s ± 2%    ~     (p=0.101 n=10+10)
EncodeDigitsDefault1e6-8   17.7MB/s ± 3%  18.1MB/s ± 1%  +2.46%  (p=0.001 n=10+10)
EncodeDigitsCompress1e4-8  27.6MB/s ± 2%  27.9MB/s ± 2%    ~     (p=0.119 n=10+10)
EncodeDigitsCompress1e5-8  19.0MB/s ± 3%  19.2MB/s ± 1%    ~     (p=0.085 n=10+10)
EncodeDigitsCompress1e6-8  17.9MB/s ± 4%  18.1MB/s ± 3%    ~     (p=0.110 n=10+10)
EncodeTwainHuffman1e4-8     141MB/s ± 3%   148MB/s ± 2%  +4.79%  (p=0.000 n=10+10)
EncodeTwainHuffman1e5-8     180MB/s ± 2%   188MB/s ± 1%  +4.38%  (p=0.000 n=10+10)
EncodeTwainHuffman1e6-8     181MB/s ± 3%   189MB/s ± 1%  +4.54%   (p=0.000 n=10+9)
EncodeTwainSpeed1e4-8      34.0MB/s ± 3%  34.1MB/s ± 1%    ~      (p=0.948 n=10+8)
EncodeTwainSpeed1e5-8      38.7MB/s ± 2%  39.0MB/s ± 1%    ~     (p=0.353 n=10+10)
EncodeTwainSpeed1e6-8      39.1MB/s ± 1%  40.1MB/s ± 1%  +2.68%   (p=0.000 n=9+10)
EncodeTwainDefault1e4-8    23.9MB/s ± 2%  24.0MB/s ± 1%    ~      (p=0.734 n=10+9)
EncodeTwainDefault1e5-8    16.0MB/s ± 4%  16.2MB/s ± 1%    ~     (p=0.210 n=10+10)
EncodeTwainDefault1e6-8    15.1MB/s ± 2%  15.2MB/s ± 1%    ~     (p=0.515 n=10+10)
EncodeTwainCompress1e4-8   23.5MB/s ± 1%  23.4MB/s ± 2%    ~      (p=0.536 n=9+10)
EncodeTwainCompress1e5-8   14.7MB/s ± 1%  14.6MB/s ± 3%    ~      (p=0.138 n=9+10)
EncodeTwainCompress1e6-8   13.4MB/s ± 3%  13.5MB/s ± 2%    ~     (p=0.239 n=10+10)

This improves "random input" to the dynamic writer, which is why the test data is
updated. The output size goes from 1051 to 1005 bytes.

Change-Id: I3ee11d2d2511b277d2dd16734aeea07c98bca450
Reviewed-on: https://go-review.googlesource.com/21757
Reviewed-by: Joe Tsai <joetsai@digital-static.net>
Run-TryBot: Joe Tsai <joetsai@digital-static.net>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Nigel Tao <nigeltao@golang.org>
compress/flate: optimize huffman bit encoder 2016-03-11T17:40:52+00:00 Klaus Post klauspost@gmail.com 2016-03-08T14:54:50+00:00 53984e5be200c40c4cf2ded9a1d002a5906c9e1f Part 1 of optimizing the deflater. This optimizes the bitwriter by: * Removing allocations. * Storing compound values for bit codes instead of 2 separate tables. * Accumulate 48 bits between writes instead of 24. * Inline bit flushing. This also contains code that will be used in later CL's (writeBlockDynamic, writeBlockHuff). Tests for Huffman bit writer encoding regressions has been added. name old speed new speed delta EncodeDigitsSpeed1e4-4 19.3MB/s ± 1% 21.6MB/s ± 1% +11.77% EncodeDigitsSpeed1e5-4 25.0MB/s ± 6% 30.7MB/s ± 1% +22.70% EncodeDigitsSpeed1e6-4 28.2MB/s ± 1% 32.3MB/s ± 1% +14.64% EncodeDigitsDefault1e4-4 13.3MB/s ± 0% 14.2MB/s ± 1% +7.07% EncodeDigitsDefault1e5-4 6.43MB/s ± 1% 6.64MB/s ± 1% +3.27% EncodeDigitsDefault1e6-4 5.81MB/s ± 0% 5.85MB/s ± 1% +0.69% EncodeDigitsCompress1e4-4 13.2MB/s ± 0% 14.4MB/s ± 0% +9.10% EncodeDigitsCompress1e5-4 6.40MB/s ± 1% 6.61MB/s ± 0% +3.20% EncodeDigitsCompress1e6-4 5.80MB/s ± 1% 5.90MB/s ± 1% +1.64% EncodeTwainSpeed1e4-4 18.4MB/s ± 1% 20.7MB/s ± 1% +12.72% EncodeTwainSpeed1e5-4 27.7MB/s ± 1% 31.0MB/s ± 1% +11.78% EncodeTwainSpeed1e6-4 29.1MB/s ± 0% 32.9MB/s ± 2% +13.25% EncodeTwainDefault1e4-4 12.4MB/s ± 0% 13.1MB/s ± 1% +5.88% EncodeTwainDefault1e5-4 7.52MB/s ± 1% 7.83MB/s ± 0% +4.19% EncodeTwainDefault1e6-4 7.08MB/s ± 1% 7.26MB/s ± 0% +2.54% EncodeTwainCompress1e4-4 12.0MB/s ± 1% 12.8MB/s ± 1% +6.70% EncodeTwainCompress1e5-4 5.96MB/s ± 1% 6.16MB/s ± 0% +3.27% EncodeTwainCompress1e6-4 5.37MB/s ± 0% 5.39MB/s ± 1% +0.47% >Allocations: benchmark old allocs new allocs delta BenchmarkEncodeDigitsSpeed1e4-4 50 0 -100.00% BenchmarkEncodeDigitsSpeed1e5-4 110 0 -100.00% BenchmarkEncodeDigitsSpeed1e6-4 1032 0 -100.00% BenchmarkEncodeDigitsDefault1e4-4 56 0 -100.00% BenchmarkEncodeDigitsDefault1e5-4 120 0 -100.00% BenchmarkEncodeDigitsDefault1e6-4 966 0 -100.00% BenchmarkEncodeDigitsCompress1e4-4 56 0 -100.00% BenchmarkEncodeDigitsCompress1e5-4 120 0 -100.00% BenchmarkEncodeDigitsCompress1e6-4 966 0 -100.00% BenchmarkEncodeTwainSpeed1e4-4 58 0 -100.00% BenchmarkEncodeTwainSpeed1e5-4 132 0 -100.00% BenchmarkEncodeTwainSpeed1e6-4 1082 0 -100.00% BenchmarkEncodeTwainDefault1e4-4 52 0 -100.00% BenchmarkEncodeTwainDefault1e5-4 126 0 -100.00% BenchmarkEncodeTwainDefault1e6-4 886 0 -100.00% BenchmarkEncodeTwainCompress1e4-4 52 0 -100.00% BenchmarkEncodeTwainCompress1e5-4 120 0 -100.00% BenchmarkEncodeTwainCompress1e6-4 880 0 -100.00% benchmark old bytes new bytes delta BenchmarkEncodeDigitsSpeed1e4-4 4288 2 -99.95% BenchmarkEncodeDigitsSpeed1e5-4 8896 15 -99.83% BenchmarkEncodeDigitsSpeed1e6-4 84098 153 -99.82% BenchmarkEncodeDigitsDefault1e4-4 4480 3 -99.93% BenchmarkEncodeDigitsDefault1e5-4 9216 76 -99.18% BenchmarkEncodeDigitsDefault1e6-4 73920 768 -98.96% BenchmarkEncodeDigitsCompress1e4-4 4480 3 -99.93% BenchmarkEncodeDigitsCompress1e5-4 9216 76 -99.18% BenchmarkEncodeDigitsCompress1e6-4 73920 768 -98.96% BenchmarkEncodeTwainSpeed1e4-4 4544 2 -99.96% BenchmarkEncodeTwainSpeed1e5-4 9600 15 -99.84% BenchmarkEncodeTwainSpeed1e6-4 77633 153 -99.80% BenchmarkEncodeTwainDefault1e4-4 4352 3 -99.93% BenchmarkEncodeTwainDefault1e5-4 9408 76 -99.19% BenchmarkEncodeTwainDefault1e6-4 65984 768 -98.84% BenchmarkEncodeTwainCompress1e4-4 4352 3 -99.93% BenchmarkEncodeTwainCompress1e5-4 9216 76 -99.18% BenchmarkEncodeTwainCompress1e6-4 65792 768 -98.83% Updates #14258 Change-Id: Ibaa97b9619743ad623094727228eb2ada1ec7f1f Reviewed-on: https://go-review.googlesource.com/19336 Reviewed-by: Nigel Tao <nigeltao@golang.org> Reviewed-by: Joe Tsai <joetsai@digital-static.net> Run-TryBot: Joe Tsai <joetsai@digital-static.net> TryBot-Result: Gobot Gobot <gobot@golang.org> 
Part 1 of optimizing the deflater. This optimizes the bitwriter by:

* Removing allocations.
* Storing compound values for bit codes instead of 2 separate tables.
* Accumulate 48 bits between writes instead of 24.
* Inline bit flushing.

This also contains code that will be used in later CL's
(writeBlockDynamic, writeBlockHuff).

Tests for Huffman bit writer encoding regressions has been added.

name                       old speed      new speed      delta
EncodeDigitsSpeed1e4-4     19.3MB/s ± 1%  21.6MB/s ± 1%  +11.77%
EncodeDigitsSpeed1e5-4     25.0MB/s ± 6%  30.7MB/s ± 1%  +22.70%
EncodeDigitsSpeed1e6-4     28.2MB/s ± 1%  32.3MB/s ± 1%  +14.64%
EncodeDigitsDefault1e4-4   13.3MB/s ± 0%  14.2MB/s ± 1%   +7.07%
EncodeDigitsDefault1e5-4   6.43MB/s ± 1%  6.64MB/s ± 1%   +3.27%
EncodeDigitsDefault1e6-4   5.81MB/s ± 0%  5.85MB/s ± 1%   +0.69%
EncodeDigitsCompress1e4-4  13.2MB/s ± 0%  14.4MB/s ± 0%   +9.10%
EncodeDigitsCompress1e5-4  6.40MB/s ± 1%  6.61MB/s ± 0%   +3.20%
EncodeDigitsCompress1e6-4  5.80MB/s ± 1%  5.90MB/s ± 1%   +1.64%
EncodeTwainSpeed1e4-4      18.4MB/s ± 1%  20.7MB/s ± 1%  +12.72%
EncodeTwainSpeed1e5-4      27.7MB/s ± 1%  31.0MB/s ± 1%  +11.78%
EncodeTwainSpeed1e6-4      29.1MB/s ± 0%  32.9MB/s ± 2%  +13.25%
EncodeTwainDefault1e4-4    12.4MB/s ± 0%  13.1MB/s ± 1%   +5.88%
EncodeTwainDefault1e5-4    7.52MB/s ± 1%  7.83MB/s ± 0%   +4.19%
EncodeTwainDefault1e6-4    7.08MB/s ± 1%  7.26MB/s ± 0%   +2.54%
EncodeTwainCompress1e4-4   12.0MB/s ± 1%  12.8MB/s ± 1%   +6.70%
EncodeTwainCompress1e5-4   5.96MB/s ± 1%  6.16MB/s ± 0%   +3.27%
EncodeTwainCompress1e6-4   5.37MB/s ± 0%  5.39MB/s ± 1%   +0.47%

>Allocations:

benchmark                              old allocs     new allocs     delta
BenchmarkEncodeDigitsSpeed1e4-4        50             0              -100.00%
BenchmarkEncodeDigitsSpeed1e5-4        110            0              -100.00%
BenchmarkEncodeDigitsSpeed1e6-4        1032           0              -100.00%
BenchmarkEncodeDigitsDefault1e4-4      56             0              -100.00%
BenchmarkEncodeDigitsDefault1e5-4      120            0              -100.00%
BenchmarkEncodeDigitsDefault1e6-4      966            0              -100.00%
BenchmarkEncodeDigitsCompress1e4-4     56             0              -100.00%
BenchmarkEncodeDigitsCompress1e5-4     120            0              -100.00%
BenchmarkEncodeDigitsCompress1e6-4     966            0              -100.00%
BenchmarkEncodeTwainSpeed1e4-4         58             0              -100.00%
BenchmarkEncodeTwainSpeed1e5-4         132            0              -100.00%
BenchmarkEncodeTwainSpeed1e6-4         1082           0              -100.00%
BenchmarkEncodeTwainDefault1e4-4       52             0              -100.00%
BenchmarkEncodeTwainDefault1e5-4       126            0              -100.00%
BenchmarkEncodeTwainDefault1e6-4       886            0              -100.00%
BenchmarkEncodeTwainCompress1e4-4      52             0              -100.00%
BenchmarkEncodeTwainCompress1e5-4      120            0              -100.00%
BenchmarkEncodeTwainCompress1e6-4      880            0              -100.00%

benchmark                              old bytes     new bytes     delta
BenchmarkEncodeDigitsSpeed1e4-4        4288          2             -99.95%
BenchmarkEncodeDigitsSpeed1e5-4        8896          15            -99.83%
BenchmarkEncodeDigitsSpeed1e6-4        84098         153           -99.82%
BenchmarkEncodeDigitsDefault1e4-4      4480          3             -99.93%
BenchmarkEncodeDigitsDefault1e5-4      9216          76            -99.18%
BenchmarkEncodeDigitsDefault1e6-4      73920         768           -98.96%
BenchmarkEncodeDigitsCompress1e4-4     4480          3             -99.93%
BenchmarkEncodeDigitsCompress1e5-4     9216          76            -99.18%
BenchmarkEncodeDigitsCompress1e6-4     73920         768           -98.96%
BenchmarkEncodeTwainSpeed1e4-4         4544          2             -99.96%
BenchmarkEncodeTwainSpeed1e5-4         9600          15            -99.84%
BenchmarkEncodeTwainSpeed1e6-4         77633         153           -99.80%
BenchmarkEncodeTwainDefault1e4-4       4352          3             -99.93%
BenchmarkEncodeTwainDefault1e5-4       9408          76            -99.19%
BenchmarkEncodeTwainDefault1e6-4       65984         768           -98.84%
BenchmarkEncodeTwainCompress1e4-4      4352          3             -99.93%
BenchmarkEncodeTwainCompress1e5-4      9216          76            -99.18%
BenchmarkEncodeTwainCompress1e6-4      65792         768           -98.83%

Updates #14258

Change-Id: Ibaa97b9619743ad623094727228eb2ada1ec7f1f
Reviewed-on: https://go-review.googlesource.com/19336
Reviewed-by: Nigel Tao <nigeltao@golang.org>
Reviewed-by: Joe Tsai <joetsai@digital-static.net>
Run-TryBot: Joe Tsai <joetsai@digital-static.net>
TryBot-Result: Gobot Gobot <gobot@golang.org>