On Sat, Oct 29, 2016 at 12:57 PM, Sanchay H <sancha...@gmail.com> wrote:

> We have a fairly big protobuf (~37MB). Here is the breakup of times:
>
> Serializing proto to binary std::string  ~= 110ms
> Serializing proto to json std::string     ~= 4200ms (size ~ 115MB)
>
>
> Parsing from binary std::string           ~= 700ms
>
> Parsing from json std::string              ~= 35 mins !!!!!
>
>
> In comparison,
>
> Parsing same json using rapidjson   ~= 800ms
>
>
> Code I used to serialize and parse:
>
>
> std::string json;
>
> google::protobuf::util::JsonStringToMessage(json, &proto);
>
>
> std::string json;
>
> google::protobuf::util::MessageToJsonString(proto, &json);
>
>
> Surely this is a not as expected right?
>
Can you file a github issue? If it takes that long, I suspect the actual
problem is that the parser uses up all your machine's physical memory, and
causes the system to swap in/out memory pages from/to disk the whole time.


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