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17944
2016 Nov 27
3
A couple metrics of LLD/ELF's performance
...sds doesn't have debug info, so the heavy
string handling costs don't show up in this profile.
--event=cycles
This is the perf default and correlates with overall runtime. One
interesting thing this shows is that LLD is currently quite bottlenecked on
the kernel.
https://reviews.llvm.org/P7944
These other metrics are harder to improve. Improving these metrics will
require macro-scale optimizations to our data structures and IO. This means
that we should be aware of them so that we avoid going into a local minimum
of performance.
--event=cache-misses
I believe these are L2 misses. getOf...