There is a new pull request by tornaria against master on the void-packages repository

https://github.com/tornaria/void-packages glibc
https://github.com/void-linux/void-packages/pull/47914

glibc: fix memalign performance regression
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The upgrade to 2.38 brought a very sad performance regression in sagemath:
```
$ time python -c 'from sage.graphs.generators.distance_regular import DoubleGrassmannGraph; print(DoubleGrassmannGraph(2,2))'
<string>:1: UserWarning: Resolving lazy import GF during startup
<string>:1: UserWarning: Resolving lazy import VectorSpace during startup
Double Grassmann graph (5, 2, 2)

real	0m30.101s
user	0m29.959s
sys	0m0.060s
```
while the same thing in 2.36 (or after this PR) takes ~ 1-2 seconds.

Thanks to @oreo639 for figuring out it was https://sourceware.org/bugzilla/show_bug.cgi?id=30723

Indeed, all the performance regressions I was seeing are gone now.

#### Testing the changes
- I tested the changes in this PR: **briefly**

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A patch file from https://github.com/void-linux/void-packages/pull/47914.patch is attached