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Commit Graph

Author	SHA1	Message	Date
Will Norris	71029cea2d	all: update copyright and license headers This updates all source files to use a new standard header for copyright and license declaration. Notably, copyright no longer includes a date, and we now use the standard SPDX-License-Identifier header. This commit was done almost entirely mechanically with perl, and then some minimal manual fixes. Updates #6865 Signed-off-by: Will Norris <will@tailscale.com>	3 years ago
David Anderson	9cd4e65191	smallzstd: new package that constructs zstd small encoders/decoders. It's just a config wrapper that passes "use less memory at the expense of compression" parameters by default, so that we don't accidentally construct resource-hungry (de)compressors. Also includes a benchmark that measures the memory cost of the small variants vs. the stock variants. The savings are significant on both compressors (~8x less memory) and decompressors (~1.4x less, not including the savings from the significantly smaller window on the compression side - with those savings included it's more like ~140x smaller). BenchmarkSmallEncoder-8 56174 19354 ns/op 31 B/op 0 allocs/op BenchmarkSmallEncoderWithBuild-8 2900 382940 ns/op 1746547 B/op 36 allocs/op BenchmarkStockEncoder-8 48921 25761 ns/op 286 B/op 0 allocs/op BenchmarkStockEncoderWithBuild-8 426 2630241 ns/op 13843842 B/op 124 allocs/op BenchmarkSmallDecoder-8 123814 9344 ns/op 0 B/op 0 allocs/op BenchmarkSmallDecoderWithBuild-8 41547 27455 ns/op 27694 B/op 31 allocs/op BenchmarkStockDecoder-8 129832 9417 ns/op 1 B/op 0 allocs/op BenchmarkStockDecoderWithBuild-8 25561 51751 ns/op 39607 B/op 92 allocs/op Signed-off-by: David Anderson <danderson@tailscale.com>	6 years ago

Author

SHA1

Message

Date

Will Norris

71029cea2d

all: update copyright and license headers

This updates all source files to use a new standard header for copyright
and license declaration.  Notably, copyright no longer includes a date,
and we now use the standard SPDX-License-Identifier header.

This commit was done almost entirely mechanically with perl, and then
some minimal manual fixes.

Updates #6865

Signed-off-by: Will Norris <will@tailscale.com>

3 years ago

David Anderson

9cd4e65191

smallzstd: new package that constructs zstd small encoders/decoders.

It's just a config wrapper that passes "use less memory at the
expense of compression" parameters by default, so that we don't
accidentally construct resource-hungry (de)compressors.

Also includes a benchmark that measures the memory cost of the
small variants vs. the stock variants. The savings are significant
on both compressors (~8x less memory) and decompressors (~1.4x less,
not including the savings from the significantly smaller
window on the compression side - with those savings included it's
more like ~140x smaller).

BenchmarkSmallEncoder-8            	   56174	     19354 ns/op	      31 B/op	       0 allocs/op
BenchmarkSmallEncoderWithBuild-8   	    2900	    382940 ns/op	 1746547 B/op	      36 allocs/op
BenchmarkStockEncoder-8            	   48921	     25761 ns/op	     286 B/op	       0 allocs/op
BenchmarkStockEncoderWithBuild-8   	     426	   2630241 ns/op	13843842 B/op	     124 allocs/op
BenchmarkSmallDecoder-8            	  123814	      9344 ns/op	       0 B/op	       0 allocs/op
BenchmarkSmallDecoderWithBuild-8   	   41547	     27455 ns/op	   27694 B/op	      31 allocs/op
BenchmarkStockDecoder-8            	  129832	      9417 ns/op	       1 B/op	       0 allocs/op
BenchmarkStockDecoderWithBuild-8   	   25561	     51751 ns/op	   39607 B/op	      92 allocs/op

Signed-off-by: David Anderson <danderson@tailscale.com>

6 years ago

2 Commits (5fb1695bcbfdfdd353a3f820a97bdb920a240432)