How to tell which thread(s) are producing all the garbage?

Posted by Brad Hein on Stack Overflow See other posts from Stack Overflow or by Brad Hein
Published on 2010-05-27T02:17:06Z Indexed on 2010/05/27 2:21 UTC
Read the original article Hit count: 244

Filed under:

android

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debugging

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threads

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garbage-collection

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crash

I have an app with about 15 threads. Most do mundane tasks and sleep most of their lives. Others collect information and cache it in hashmaps. The hashmaps grow to a moderate size and level out. The number of keys and size of value remains constant, but the contents of the values changes (at 33 keys per second average).

When I start my app, I notice the garbage collection interval goes from minutes to once per second, and the amount of garbage is 700k+ each time.

In fact as I was writing this, it caused my phone to reboot with an error "Referencetable Overflow".

Here's my question: Are there any tricks to identifying which threads are producing the garbage, or even finding out more about what garbage they are producing?

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