Set DART_VM_OPTIONS for image proxy to adjust GC - #9557
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Configure `--old_gen_heap_size=768` to cap old generation heap size and trigger GC compaction before container memory limits, and `--dontneed_on_sweep` to release freed heap pages back to the host kernel via madvise(MADV_DONTNEED).
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Hmm, I would think so - nice to prevent OOM by triggering GC before it grows out of your available memory. but of course I don't really knows how well it works. @mkustermann might be able to give guidance... |
This was referenced Sep 1, 2026
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Closing for now. As detailed in dart-lang/sdk#29786 (comment), setting The Cloud Run container memory for image proxy has already been doubled to 1 GiB in cl/973847545, which provides ample headroom for concurrent requests without needing a manual VM heap cap. |
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/cc our GC expert: @rmacnak-google |
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Configure
DART_VM_OPTIONS="--old_gen_heap_size=768"for the image proxy server in both the Dockerfile and Cloud Build deployment step.--old_gen_heap_size=768: caps old generation heap (75% of the 1 GiB container memory limit) to trigger garbage collection before reaching container memory boundaries, leaving ~256 MB for new-gen heap, thread stacks, TLS/socket buffers, and runtime overhead.Improves the situation on #9554 (but we should also increase memory).