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Json11 Benchmarks about json11 HOT 2 OPEN

dropbox commented on July 20, 2024

Json11 Benchmarks

from json11.

Comments (2)

artwyman commented on July 20, 2024

Cool! I'm really curious about the really high max values for json11 in 2 cases (and for JSONKit in one case). Caching effects of some sort (is it always the first time)? Or some kind of a one-time interruption from outside the system? I can't believe that parsing the same data sometimes legitimately takes 150x more time.

Regardless, this would be a god test case to use for some profiling, if someone felt inclined.

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loretoparisi commented on July 20, 2024

@artwyman Yes I agree, infact that sounds quite strange to me! Also I can see a non proportional timing when parsing X times the same JSON, even if this is something that happens to several parsers.

This is the timing code (the snippet here show two parsers) in the file MCTestViewController.m

- (NSNumber *)parseWithJson11:(NSString *)content
{
    NSDate *startTime = [NSDate date];

    Json11 *rpdj = [Json11 new];
    id result=[rpdj parse:content];
    float elapsedTime = [startTime timeIntervalSinceNow] * -1000;
    if (result == nil)
    elapsedTime = -1.0;
    return [NSNumber numberWithFloat:elapsedTime];
}

- (NSNumber *)parseWithJsonModernCPlusPlus:(NSString *)content {
    NSDate *startTime = [NSDate date];

    JsonModernCPlusPlus *rpdj = [JsonModernCPlusPlus new];
    id result=[rpdj parse:content];
    float elapsedTime = [startTime timeIntervalSinceNow] * -1000;
    if (result == nil)
    elapsedTime = -1.0;
    return [NSNumber numberWithFloat:elapsedTime];
}

where as said above I do

#import "Json11.h"
#import "json11.hpp"
#import "CppStringAdditions.h"

@implementation Json11

- (NSString*)parse:(NSString*)json {

    const char* data = [json UTF8String];

    json11::Json parser;

    parser = json11::Json(data);

    std::string jsonString;

    parser.dump(jsonString);

    //printf("%s", jsonString.c_str());

    return [NSString stringWithstring:jsonString];

}
@end

Said that, I'm doing again the tests on

XCode 7.1 / iOS 9.0 / ARM64 / iPhone6

So I have tested for 1, 5 and 100 times parsing a small a 322 Bytes JSON file and a big a 55435 Bytes JSON file and tested json11, gason and JSON Forn Modern C++ (now added), that are all JSON C++ parsers.

The biggest file (uncompressed 55435 Bytes) has nested json objects like:

"track_list": [
                {
                    "track": {
                        "track_id": 72612817,
                        "track_mbid": "",
                        "track_isrc": "GBUM71400955",
                        "track_spotify_id": "",
                        "track_soundcloud_id": 0,
                        "track_xboxmusic_id": "",
                        "track_name": "Bailando (Spanish Version)",
                        "track_name_translation_list": [],
                        "track_rating": 91,
                        "track_length": 243,
                        "commontrack_id": 39807317,
                        "instrumental": 0,
                        "explicit": 0,
                        "has_lyrics": 1,
                        "has_subtitles": 1,
                        "num_favourite": 848,
                        "lyrics_id": 9615270,
                        "subtitle_id": 2871021,
                        "album_id": 19584902,
                        "album_name": "SEX AND LOVE",
                        "artist_id": 27082008,
                        "artist_mbid": "",
                        "artist_name": "Enrique Iglesias feat. Descemer Bueno & Gente de Zona",
                        "album_coverart_100x100": "http://static.musixmatch.com/images-storage/albums8/7/0/0/8/5/7/30758007.jpg",
                        "album_coverart_350x350": "http://static.musixmatch.com/images-storage/albums8/7/0/0/8/5/7/30758007_350_350.jpg",
                        "album_coverart_500x500": "http://static.musixmatch.com/images-storage/albums8/7/0/0/8/5/7/30758007_500_500.jpg",
                        "album_coverart_800x800": "http://static.musixmatch.com/images-storage/albums8/7/0/0/8/5/7/30758007_800_800.jpg",
                        "track_share_url": "https://community.musixmatch.com/lyrics/Enrique-Iglesias-feat-Descemer-Bueno-Gente-de-Zona/Bailando-%28Spanish-Version%29",
                        "track_edit_url": "https://community.musixmatch.com/lyrics/Enrique-Iglesias-feat-Descemer-Bueno-Gente-de-Zona/Bailando-%28Spanish-Version%29?utm_source=application&utm_campaign=api&utm_medium=musixmatch-iphone",
                        "commontrack_vanity_id": "Enrique-Iglesias-feat-Descemer-Bueno-Gente-de-Zona/Bailando-(Spanish-Version)",
                        "updated_time": "2014-05-26T08:55:26Z",
                        "primary_genres": {
                            "music_genre_list": [
                                {
                                    "music_genre": {
                                        "music_genre_id": 14,
                                        "music_genre_parent_id": 34,
                                        "music_genre_name": "Pop",
                                        "music_genre_name_extended": "Pop",
                                        "music_genre_vanity": "Pop"
                                    }
                                }
                            ]
                        },
                        "secondary_genres": {
                            "music_genre_list": [
                                {
                                    "music_genre": {
                                        "music_genre_id": 1117,
                                        "music_genre_parent_id": 12,
                                        "music_genre_name": "Pop Latino",
                                        "music_genre_name_extended": "Latin / Pop Latino",
                                        "music_genre_vanity": "Latin-Pop-Latino"
                                    }
                                }
                            ]
                        }
                    }
                },

The smallest json file (322 Bytes) has a simple flat structure like:

"location": {
                "GEOIP_CITY_COUNTRY_CODE": "IT",
                "GEOIP_CITY_COUNTRY_CODE3": "ITA",
                "GEOIP_CITY_COUNTRY_NAME": "Italy",
                "GEOIP_CITY": "Bologna",
                "GEOIP_CITY_CONTINENT_CODE": "EU",
                "GEOIP_LATITUDE": 44.4938,
                "GEOIP_LONGITUDE": 11.3387
            }