[Issue 18388] std.experimental.logger slow performance

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18388

--- Comment #4 from Arun Chandrasekaran <aruncxy at gmail.com> ---
On the same box with ldc 1.12.0-beta1, I see that the performance has improved
by around 20%.

04-09-2018 21:06:15 vaalaham ~/code/d/std-log-benchmark
$ time ./std-log-benchmark 8 1000000

real    0m3.958s
user    0m3.457s
sys     0m2.840s
04-09-2018 21:08:47 vaalaham ~/code/d/std-log-benchmark
$

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