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From Matt Sicker <boa...@gmail.com>
Subject Re: Garbage-free string encoding performance with UTF-16 charset
Date Wed, 18 May 2016 16:10:01 GMT
I used UTF-16 to encode an XML file by accident once. That's about the
extent that I've ever used it.

On 18 May 2016 at 11:08, Mikael Ståldal <mikael.staldal@magine.com> wrote:

> Maybe not, if we assume that most users won't use UTF-16.
>
> (I don't use UTF-16, and I don't know any specific use case for it. I just
> thought it would be good to test it.)
>
> There is no significant difference for US-ASCII, ISO-8859-1 and UTF-8.
>
> On Wed, May 18, 2016 at 6:02 PM, Remko Popma <remko.popma@gmail.com>
> wrote:
>
>> Interesting. I'll take a look tomorrow.
>> I don't think this is a showstopper though, would you agree?
>>
>> On Thu, May 19, 2016 at 12:29 AM, Mikael Ståldal <
>> mikael.staldal@magine.com> wrote:
>>
>>> It seems like the new garbage-free string encoding method performs
>>> poorly with the UTF-16 charset.
>>>
>>> See AbstractStringLayoutStringEncodingBenchmark in log4j-perf which I
>>> just committed to master branch.
>>>
>>> My results, note utf16Encode:
>>>
>>> Benchmark              Mode  Samples     Score    Error  Units
>>> baseline                   sample    90395     24.754 ±  0.484  ns/op
>>> iso8859_1Encode    sample    54514   130.176 ±  2.320  ns/op
>>> iso8859_1GetBytes sample    64464    126.122 ±  1.184  ns/op
>>> usAsciiEncode         sample    68833    190.550 ±  1.117  ns/op
>>> usAsciiGetBytes       sample    80176   170.556 ±  1.691  ns/op
>>> utf16Encode             sample    86597  2013.954 ± 10.551  ns/op
>>> utf16GetBytes          sample    63696    386.276 ± 46.024  ns/op
>>> utf8Encode               sample    69108    190.773 ±  1.504  ns/op
>>> utf8GetBytes            sample    66561    196.247 ±  1.623  ns/op
>>>
>>> --
>>> [image: MagineTV]
>>>
>>> *Mikael Ståldal*
>>> Senior software developer
>>>
>>> *Magine TV*
>>> mikael.staldal@magine.com
>>> Grev Turegatan 3  | 114 46 Stockholm, Sweden  |   www.magine.com
>>>
>>> Privileged and/or Confidential Information may be contained in this
>>> message. If you are not the addressee indicated in this message
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>>> not copy or deliver this message to anyone. In such case,
>>> you should destroy this message and kindly notify the sender by reply
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>>>
>>
>>
>
>
> --
> [image: MagineTV]
>
> *Mikael Ståldal*
> Senior software developer
>
> *Magine TV*
> mikael.staldal@magine.com
> Grev Turegatan 3  | 114 46 Stockholm, Sweden  |   www.magine.com
>
> Privileged and/or Confidential Information may be contained in this
> message. If you are not the addressee indicated in this message
> (or responsible for delivery of the message to such a person), you may not
> copy or deliver this message to anyone. In such case,
> you should destroy this message and kindly notify the sender by reply
> email.
>



-- 
Matt Sicker <boards@gmail.com>

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