Re: [boost] [serialization] proposed improvements: forward-compatibility of serialization

Subject: Re: [boost] [serialization] proposed improvements: forward-compatibility of serialization
From: Brian Wood (woodbrian77_at_[hidden])
Date: 2014-04-18 15:20:39

On Fri, Apr 18, 2014 at 10:52 AM, Robert Ramey <
robertmacleranramey_at_[hidden]> wrote:

>
>
> On Friday, April 18, 2014 6:40:32 AM UTC-7, Brian Wood wrote:
>>
>> niXman writes:
>>
>> > Hi,
>> >
>> > YAS(https://github.com/niXman/yas) ?
>>
>> The test results on your page are impressive, but there's
>> not much info on what or how you tested.  Please give
>> some more info on that.
>>
>
> Looks like the YAS version uses a special mem_ostream/mem_istream classes
> rather than std::strstream.  Since the largest part of any of these
> benchmarks is spent on the i/o part this would account for a huge
> difference.
>
>
>>
>> Also it looks to me like the results you list for text
>> serialization are off by a factor of ten.
>>
>
> This is common when the benchmark is compiled in debug mode.  The boost
> serialization library has a huge amount of extra checking in debug mode
> which generally slows things down by a factor of 10.  I don't know if
> that's the case here though.
>
>

He has this table:

       |  boost  |   YAS   |
+------+---------+---------+---------+
| save | 8090 ms | 277 ms  | +28000% |
+------+---------+---------+---------+
| load | 8794 ms | 265 ms  | +33000% |
+------------------------------------+

I think the last column is off.  It should be +2800% and
+3300%.   Personally I wouldn't use the percents and
would use 28  and 33.

-- 
Brian
Ebenezer Enterprises - Heavenly code.
http://webEbenezer.net