Fix the missing first bar in the summary chart

[alexey-milovidov]

The first bar does not render in this view (CedarDB (Parquet) + ClickHouse (Parquet), combined metric).

Cause

The baseline for the load time and data size components of the combined metric was computed over entries passing a strictly-greater threshold, while the components themselves are applied to entries passing a greater-or-equal one:

const min_load_time = Math.min(...filtered_data.map(elem => elem.load_time).filter(x => x && x > 5));
...
combined_load_time_share * Math.log(elem.load_time >= 5 ? (elem.load_time / min_load_time) : 1)

In that selection every load time is 0, 1, 3 or 5 — nothing is > 5, so Math.min of an empty list returns Infinity. CedarDB (Parquet) on c6a.4xlarge loads in exactly 5s, which does satisfy >= 5, so its load time factor became 5 / Infinity == 0, Math.log(0) == -Infinity, and the whole combined score collapsed to exp(-Infinity) == 0. A ratio of 0 sorts first and renders a bar of zero width.

Fix

Make the thresholds match the conditions that consume them. The load time row of the detailed table already used >= 5 for the same purpose, which confirms the intended boundary.

With the fix, CedarDB (Parquet) on c6a.4xlarge scores ×2.44 and sorts last, consistent with its cold and hot ratios of 2.24 and 3.37.

Effect on the default view

min_load_time goes from 6 to 5, so entries with a counted load time shift by a uniform (6/5)^0.1 ≈ 1.8%. That swaps a handful of adjacent near-ties but changes nothing structural, and it is the correct baseline — a 5s load was always eligible to be counted.

🤖 Generated with Claude Code