[PATCH] D147493: [ELF] Cap parallel::strategy to 8 cores when --threads= is unspecified

[Mateusz Guzik via Phabricator via llvm-commits]

mjguzik added a comment.

In D147493#4245744 <https://reviews.llvm.org/D147493#4245744>, @peter.smith wrote:

> I have run a limited experiment linking clang on a 64 core AArch64 machine. Results seem to be similar to x86_64. No benefit seen linking clang past 8 threads. On the machine I had access to I was very limited in disk space so I couldn't check the debug build. From prior experience debug builds seems to benefit more from more threads as there is quite a lot of data to write out in the most parallel part of LLD.

bare metal aarch64 with sufficient(tm) disk space is not hard to come by.

if you think the debug thingy is worth checking out and you can't get sufficient hw as is, you contact me in private and we can arrange temporary access to something.

perhaps while the machine is disk starved, it has a lot of ram? as in perhaps you could use a tmpfs mount for the output?


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