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encoding/gob: TestLargeSlice uses too much virtual memory for plan9-arm #60284

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millerresearch opened this issue May 18, 2023 · 1 comment
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encoding/gob: TestLargeSlice uses too much virtual memory for plan9-arm #60284

millerresearch opened this issue May 18, 2023 · 1 comment
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@millerresearch
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The test encoding/gob.TestLargeSlice runs parallel encode/decode tests with multiple copies of large (tens of megabytes) slices. This strains the capacity of user-space virtual memory (1GB) on the plan9-arm builders, resulting in frequent allocation failures like this:

    runtime: out of memory: cannot allocate 41943040-byte block (884375552 in use)
    fatal error: out of memory

Example logs:
https://build.golang.org/log/7e84d1562761f1b26b0416f07cb0c7de8e173a74
https://build.golang.org/log/87a50b6d8b81a69bcde6535f156d8deae70ef38f

It might be possible to tweak the test to reduce memory pressure, but it would be simpler just to skip the test on plan9-arm.
@millerresearch millerresearch self-assigned this May 18, 2023
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Change https://go.dev/cl/496138 mentions this issue: encoding/gob: skip TestLargeSlice on plan9-arm builders

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