add a compile-time option to enable 4k page sizes (#52229) #111
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We're suffering from heavy fragmentation in some of our workloads. Add a build-time option to enable 4k pages (instead of 16k) in the GC, since that improves memory utilization considerably for us. Drawback is that this may increase the number of `madvise` system calls in the sweeping phase by a factor of 4, but concurrent page sweeping should help with some of that.
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@kpamnany: could you approve it so that we have the basic functionality in place? Actually flipping the flag to enable it would be another PR, as usual. |
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…111) We're suffering from heavy fragmentation in some of our workloads. Add a build-time option to enable 4k pages (instead of 16k) in the GC, since that improves memory utilization considerably for us. Drawback is that this may increase the number of `madvise` system calls in the sweeping phase by a factor of 4, but concurrent page sweeping should help with some of that.
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PR Description
Backports upstream patch to enable 4k page sizes as a build-time option.
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