Скачать или смотреть Troubleshooting AOSP Builds: How to Overcome Out of Memory Errors with 8 GB RAM

Discover how to fix `Out of Memory` errors when building AOSP 7 with limited RAM. Follow these simple steps to adjust your jack settings effectively.
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This video is based on the question https://stackoverflow.com/q/62244305/ asked by the user 'WebDev' ( https://stackoverflow.com/u/10806294/ ) and on the answer https://stackoverflow.com/a/62281684/ provided by the user 'ariane26' ( https://stackoverflow.com/u/4688529/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Troubleshooting AOSP Builds: How to Overcome Out of Memory Errors with 8 GB RAM

Building the Android Open Source Project (AOSP) can be an exciting yet challenging task, particularly when you run into memory issues. A user recently faced a significant problem during the build process of AOSP 7, especially on a system limited to 8 GB of RAM. The following outlines the issue they encountered along with a straightforward solution to get you back on track.

The Problem: Out of Memory Errors

During his attempt to build AOSP 7, the user experienced a frustrating “Out of memory” error, which is not uncommon, especially when compiling versions that require more resources. Here’s a part of the error log:

[[See Video to Reveal this Text or Code Snippet]]

This error indicates that the existing memory allocated for the Java Virtual Machine (JVM) is insufficient to carry out the build tasks. This is particularly problematic for users with systems equipped with only 8 GB of RAM, as the default settings may not adequately cater to the build requirements of the latest AOSP versions.

Understanding the Change in AOSP Versions

The transition from AOSP 6 to AOSP 7 has brought about significant enhancements and changes in files and resources, which might have contributed to the increased memory requirement. The user previously did not encounter memory issues while compiling older versions, which reflects the fact that newer versions tend to require additional processing power and memory capacity.

Key Differences

Increased Code Complexity: AOSP versions are continually evolving, meaning added features and optimizations often translate into greater memory consumption during the build process.

Build System Changes: Changes in the build system, such as the integration of Jack for building Java code, can lead to higher resource utilization.

The Solution: Adjusting Jack Settings

To effectively mitigate the Out of Memory errors, users with limited RAM can adjust the JVM memory settings in their jack configuration. Here’s how to do it:

Step-by-Step Instructions

Locate the .jack-settings File: This file can usually be found in your AOSP source directory. You may need to look at the root or build directories, depending on your setup.

Edit the File: Open the .jack-settings file using a text editor.

Add JVM Memory Argument: Find a suitable location within the file and include the following line:

[[See Video to Reveal this Text or Code Snippet]]

The -Xmx option increases the maximum heap size for the JVM, which in this case, is set to 4096m (or 4 GB). This adjustment can help accommodate the required resources during the build without overloading the system.

Save the File: After adding the above line, ensure you save the changes.

Rebuild the AOSP: Now, rerun the build command. This configuration change should help overcome the memory issue you were previously encountering.

Conclusion

Building AOSP on systems with limited resources can be challenging, but with the right adjustments, it's possible to clear common barriers like Out of Memory errors. By editing the jack settings to allocate more JVM memory, you improve your chances of successfully completing the build.

If you continue to face issues, consider additional optimizations such as closing other applications or upgrading your hardware. Always keep in mind that while building AOSP can demand significant resources, a well-configured environment can lead to success even on hardware with limitations. Happy building!