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Java decoder is slow #159

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opened 2026-01-29 20:39:00 +00:00 by claunia · 2 comments
claunia commented 2026-01-29 20:39:00 +00:00
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Originally created by @mzule on GitHub (Feb 13, 2017).

BrotliInputStream with brotli format is much slower than GZIPInputStream with gzip format. Is there any performance problem with java decoder?

Some statistics generated on my android device (xiaomi 4):

data size format decode cost (ms)
1kb br 4.46
1kb gzip 1.38
12kb br 17.36
12kb gzip 4.35
46kb br 52.59
46kb gzip 8.66
112kb br 82.91
112kb gzip 15.63
365kb br 247.37
365kb gzip 41.47
Originally created by @mzule on GitHub (Feb 13, 2017). BrotliInputStream with brotli format is much slower than GZIPInputStream with gzip format. Is there any performance problem with java decoder? Some statistics generated on my android device (xiaomi 4): data size | format | decode cost (ms) ---|---|--- 1kb | br | 4.46 1kb | gzip | 1.38 12kb | br | 17.36 12kb | gzip | 4.35 46kb | br | 52.59 46kb | gzip | 8.66 112kb | br | 82.91 112kb | gzip | 15.63 365kb | br | 247.37 365kb | gzip | 41.47
claunia commented 2026-01-29 20:39:01 +00:00
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@eustas commented on GitHub (Feb 13, 2017):

GZIPInputStream is based on native library.
BrotliInputStream is a pure java implementation for platforms/products where embedding of native code is not allowed. For other platforms JNI wrapper should be used.

@eustas commented on GitHub (Feb 13, 2017): GZIPInputStream is based on native library. BrotliInputStream is a pure java implementation for platforms/products where embedding of native code is not allowed. For other platforms JNI wrapper should be used.
claunia commented 2026-01-29 20:39:02 +00:00
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@mzule commented on GitHub (Feb 17, 2017):

Yes! JNI wrapper is much more efficient. Time cost is even less than gzip. Thank you!

data size format decode cost (ms)
1kb br 0.47
12kb br 1.44
46kb br 3.88
112kb br 6.53
365kb br 17.98
@mzule commented on GitHub (Feb 17, 2017): Yes! JNI wrapper is much more efficient. Time cost is even less than gzip. Thank you! data size | format | decode cost (ms) ---|---|--- 1kb | br | 0.47 12kb | br | 1.44 46kb | br | 3.88 112kb | br | 6.53 365kb | br | 17.98
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Reference: starred/brotli#159
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