[LLVMdev] JIT compilation 2-3 times slower in latest LLVM snapshot

[Dibyendu Majumdar]

On 11 July 2015 at 19:42, Dibyendu Majumdar <mobile at majumdar.org.uk> wrote:
> Just looking at the release I prepared a week ago and comparing the
> results from today I see:
>
> Release 0.6 (1 week ago; using LLVM snapshot earlier than that):
> total time: 123.71s (wall time: 124s)
> https://github.com/dibyendumajumdar/ravi/releases/tag/0.6
>
> Release 0.7 (snapshot taken today)
> total time: 333.65s (wall time: 333s)
> https://github.com/dibyendumajumdar/ravi/releases/tag/0.7
>
> Both are slower than the 3.6.1 release I am using in my Linux builds.
>

After rebooting the performance has gone back to normal. As I ran
above two tests at the same time there was nothing wrong with the
system at the time (because then v0.6 would have behaved badly as
well), so I don't know what to think of this.

v0.7
total time: 121.57s (wall time: 121s)

Regards

Dibyendu