perf: dep_graph: deduplicate task reads with an epoch-filtered index recorder#159115
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perf: dep_graph: deduplicate task reads with an epoch-filtered index recorder#159115xmakro wants to merge 1 commit into
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Jul 11, 2026
| fn slot(&mut self, index: DepNodeIndex) -> &mut u32 { | ||
| let index = index.as_usize(); | ||
| if index >= self.epochs.raw.len() { | ||
| self.epochs.raw.resize((index + 1).next_power_of_two().max(64), 0); |
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This can retain up to 4 × 64 MiB epoch tables for tasks with only 17 reads but high global DepNodeIndex values; could we cap/fallback this or provide peak-RSS benchmark data?
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