BlueBrain / libsonata / 11381558378

94%

push

github

Use aggregated reading for 1D selections. (#374)

* Use aggregated reading for 1D selections.

Aggregating scattered reads was implemented in

  * 836646574 adds bulkRead,
  * a7d1453fa for 2D selections.

However, it was only used for edge indexes. We measured the performance
on an HDD and SSD for random access patterns with different streak
lengths. We found that for all cases, including streak length of 1,
using bulkRead was preferrable over both `0.1.24` (using
`HighFive::ElementSet`) and `0.1.29` (using `HighFive::HyperSlab`).

We investigated if aggregating multiple pages was beneficial and found
that it was not.

* Use `1* min_gap_size`.

11 of 11 new or added lines in 2 files covered. (100.0%)

1908 of 2038 relevant lines covered (93.62%)

87.58 hits per line