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<jemalloc>: Unsupported system page size [solved] #249

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opened 2022-02-26 08:56:58 +00:00 by reti4 · 3 comments
reti4 commented 2022-02-26 08:56:58 +00:00 (Migrated from gitlab.com)
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This took me forever to piece together so I'm going to write it down here because I didn't see it anywhere here. Running a misconfigured precompiled binary on a certain arm64 server panics and fails due to the title of this issue. This is because the file system's page file is 64k. This causes jemalloc-sys (really jemalloc) to panic and exit because it defaults to 4k I think. This is easily fixed if you put in "JEMALLOC_SYS_WITH_LG_PAGE=16", in Cross.toml (16 because 64k = 2^16).
Maybe for a fix offer 2 different versions for arch binaries?

$ getconf PAGE_SIZE
65536

$ cat Cross.toml 
[build.env]
passthrough = [
    "RUSTC_WRAPPER",
    "AWS_ACCESS_KEY_ID",
    "AWS_SECRET_ACCESS_KEY",
    "SCCACHE_BUCKET",
    "SCCACHE_ENDPOINT",
    "SCCACHE_S3_USE_SSL",
    "JEMALLOC_SYS_WITH_LG_PAGE=16",
]
... more stuff down here

This references https://github.com/jemalloc/jemalloc/issues/467 and the rust caller https://crates.io/crates/jemalloc-sys

This took me forever to piece together so I'm going to write it down here because I didn't see it anywhere here. Running a misconfigured precompiled binary on a certain arm64 server panics and fails due to the title of this issue. This is because the file system's page file is 64k. This causes jemalloc-sys (really jemalloc) to panic and exit because it defaults to 4k I think. This is easily fixed if you put in `"JEMALLOC_SYS_WITH_LG_PAGE=16",` in `Cross.toml` (16 because 64k = 2^16). Maybe for a fix offer 2 different versions for arch binaries? ```sh $ getconf PAGE_SIZE 65536 ``` ```toml $ cat Cross.toml [build.env] passthrough = [ "RUSTC_WRAPPER", "AWS_ACCESS_KEY_ID", "AWS_SECRET_ACCESS_KEY", "SCCACHE_BUCKET", "SCCACHE_ENDPOINT", "SCCACHE_S3_USE_SSL", "JEMALLOC_SYS_WITH_LG_PAGE=16", ] ... more stuff down here ``` This references https://github.com/jemalloc/jemalloc/issues/467 and the rust caller https://crates.io/crates/jemalloc-sys
reti4 commented 2022-02-26 09:01:55 +00:00 (Migrated from gitlab.com)
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changed the description

changed the description
reti4 commented 2022-03-11 07:41:20 +00:00 (Migrated from gitlab.com)
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mentioned in issue #68

mentioned in issue #68
jfowl commented 2022-03-14 20:18:04 +00:00 (Migrated from gitlab.com)
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I'm tempted to just remove jemalloc for aarch64 CI builds. According to the issue you linked, Debian and Fedora appear to use different page sizes.

Still, this might need to be included in building docs somewhere.

I'm tempted to just remove jemalloc for aarch64 CI builds. According to the issue you linked, Debian and Fedora appear to use different page sizes. Still, this might need to be included in building docs somewhere.
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