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test: Increase resolution of MB/s stat for bench runs close to 1 second

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MB/s was based on the number of iterations performed in a second, when
the iteration duration nears 1 second (1e9 ns), the resolution of the
MB/s stat decreases.
This commit is contained in:
Ulrik Sverdrup 2016-01-16 17:34:42 +01:00
parent 42c3ef8f9f
commit 627829bde8
1 changed files with 1 additions and 2 deletions

3
src/libtest/lib.rs

@ -1258,8 +1258,7 @@ pub mod bench {
let ns_iter_summ = bs.auto_bench(f);
let ns_iter = cmp::max(ns_iter_summ.median as u64, 1);
let iter_s = 1_000_000_000 / ns_iter;
let mb_s = (bs.bytes * iter_s) / 1_000_000;
let mb_s = bs.bytes * 1000 / ns_iter;
BenchSamples {
ns_iter_summ: ns_iter_summ,