WiredTiger recently got an external contribution from Github user AGSaidi to use the -moutline-atomics flag for ARM in the cases where the compiler supports it.
https://github.com/wiredtiger/wiredtiger/pull/6042
In GCC-10, this flag is on by default. The functionality has apparently been backported to older versions of GCC however it needs to be explicitly set with the -moutline-atomics flag. On my local machine, I saw wtperf ops/sec increase by 2x on a few of the workloads that I tested.
If you're already aware of this flag, feel free to close this. I figured I should let someone from the server org know just in case.
- is related to
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SERVER-56347 Enable LSE intrinsics in release
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- Closed
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SERVER-72505 Remove -moutline-atomics as LSE atomics are implied by the minimum target armv8.2-a
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- Closed
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