kiwibd has been used extensively in external benchmarks, it makes sense
to make it the default bd for the bench runner:
- test_runner - defaults to emubd - more testing features
- bench_runner - defaults to kiwibd - lighter-weight disks
The benefit of kiwibd is the disk is just one big blob of RAM, so
basically no overhead. This is important when benchmarking on multi-GiB
disks.
emubd is much heavy, but as a tradeoff can do quite a bit more:
bad-block simulation, wear simulation, snapshotting, etc.
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In theory the bd used by each runner can be controlled at compile-time
by defining -DBENCH_EMUBD, etc, but I have a feeling no one will ever
use this.
Christopher Haster
ab39a8fde9