Speed of \JsonMachine\JsonMachine::fromFile

[TechOverflow]

Hi!

Is it normal for a response to take 8-9 seconds on a 32MB file? When using json_decode, it was maybe a second or two (at the cost of resources).

I am simply using
$array = \JsonMachine\JsonMachine::fromFile($file);
and matching an email with foreach to return all objects containing that email (usually 5-10 objects and 20kB or so).

Cheers

[halaxa]

Hello. Yes, it seems normal for most PCs.

If json_decode works better for you, use that. When it starts running out of memory, use JsonMachine.

The main advantage of this package is constant memory consumption and quite constant speed. Of course the speed can't mostly measure with native implementation, but that's not the goal. The goal is to be memory efficient on JSON streams of any length. In terms of speed, json_decode fluctuates greatly on huge files.

By the way, 5x slower than native (in your case) is not that bad. With JSON files with size of 100 MB and up it is sometimes even faster than json_decode. And while on 100 MB file json_decode eats about 1 GB of memory, JsonMachine is constantly at about 800 kB.

[TechOverflow]

The delay is actually caused by the foreach, which is due to the 27 thousand objects. I'll try to cut down on the amount of data in each object to make it more efficient.

[halaxa]

Take a look at test/performance/testPerformace.php. You may get some hints. If you provided part or pseudo-part of your json file, we could discuss it here.

[halaxa]

Closing as not a bug for now.

[halaxa]

This might be of help #97