gistfile1.txt

Chromium Version 55.0.2883.75 built on Debian stretch/sid, running on Debian stretch/sid (64-bit):

len: 1 
go           10000	    110000 ns/op	   0.01 MB/s 
webcrypto     1000	   1595000 ns/op	   0.00 MB/s 
 
len: 1000 
go            1000	   1270000 ns/op	   0.79 MB/s 
webcrypto     1000	   1629000 ns/op	   0.61 MB/s 
 
len: 2000 
go             500	   2472000 ns/op	   0.81 MB/s 
webcrypto     1000	   1691000 ns/op	   1.18 MB/s 
 
len: 2500 
go             500	   3094000 ns/op	   0.81 MB/s 
webcrypto     1000	   1643000 ns/op	   1.52 MB/s 
 
len: 2600 
go             500	   3362000 ns/op	   0.77 MB/s 
webcrypto     1000	   1586000 ns/op	   1.64 MB/s 
 
len: 2700 
go             500	   3292000 ns/op	   0.82 MB/s 
webcrypto     1000	   1704000 ns/op	   1.58 MB/s 
 
len: 100000 
go              10	 119000000 ns/op	   0.84 MB/s 
webcrypto     1000	   2243000 ns/op	  44.58 MB/s 
 
len: 10000000 
go               1	12677000000 ns/op	   0.79 MB/s 
webcrypto       30	  33466666 ns/op	 298.80 MB/s 


Firefox 45.6.0

len: 1 
go           30000	     43766 ns/op	   0.02 MB/s 
webcrypto    10000	    182900 ns/op	   0.01 MB/s 
 
len: 1000 
go           10000	    139900 ns/op	   7.15 MB/s 
webcrypto    10000	    192400 ns/op	   5.20 MB/s 
 
len: 2000 
go           10000	    233200 ns/op	   8.58 MB/s 
webcrypto    10000	    203400 ns/op	   9.83 MB/s 
 
len: 2500 
go            5000	    283400 ns/op	   8.82 MB/s 
webcrypto    10000	    170200 ns/op	  14.69 MB/s 
 
len: 2600 
go            5000	    307000 ns/op	   8.47 MB/s 
webcrypto    10000	    173100 ns/op	  15.02 MB/s 
 
len: 2700 
go            5000	    301400 ns/op	   8.96 MB/s 
webcrypto    10000	    202300 ns/op	  13.35 MB/s 
 
len: 100000 
go             100	  10000000 ns/op	  10.00 MB/s 
webcrypto     2000	    969000 ns/op	 103.20 MB/s 
 
len: 10000000 
go               2	 953500000 ns/op	  10.49 MB/s 
webcrypto       20	  58550000 ns/op	 170.79 MB/s