How many AsyncTasks can you execute in parallel?

Question

AsyncTask are executed seriallu but we can execute them parallely using executeOnExecutor. How many Asynctask we can execute parallely in Android?

Possible duplicate of [How many AsyncTasks i can run in an single process application](http://stackoverflow.com/questions/24505981/how-many-asynctasks-i-can-run-in-an-single-process-application) — ישו אוהב אותך, Oct 10 '16 at 07:13

score 1 · Answer 1 · edited Jun 20 '20 at 09:12

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I believe this StackOverflow post has already answered your question: How many AsyncTasks i can run in an single process application

How many AsyncTasks can you run at once?

In most versions of Android, the answer is 128.

Please do a quick search before asking these questions.

edited Jun 20 '20 at 09:12

Community

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answered Oct 10 '16 at 06:39

Rupayan Neogy

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score 0 · Answer 2 · answered Oct 10 '16 at 06:36

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Android uses ThreadPool inside AsyncTask. Maximum size of this thread pool is

MAXIMUM_POOL_SIZE = CPU_COUNT * 2 + 1;

So maximum number of AysncTask depends on CPU Count.

Reference:

http://dsalgos.com/971/how-many-asynctasks-can-you-execute-in-parallel

answered Oct 10 '16 at 06:36

Ashish Rathee

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Adding to this, you can also create your own executor, with your own settings. So with a custom executor, it can be theoretically unlimited. – Daniel Zolnai Oct 10 '16 at 06:38

score 0 · Answer 3 · edited May 23 '17 at 12:10

Check this answer.

AsyncTask uses a thread pool pattern for running the stuff from doInBackground(). The issue is initially (in early Android OS versions) the pool size was just 1, meaning no parallel computations for a bunch of AsyncTasks. But later they fixed that and now the size is 5, so at most 5 AsyncTasks can run simultaneously. Unfortunately I don't remember in what version exactly they changed that.

Running multiple AsyncTasks at the same time -- not possible?

Also check the above link. Hope it will help.

How many AsyncTasks can you execute in parallel?

3 Answers3