Ledger purge printing (#15176)
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11b84cb870
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774416a546
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@ -1,4 +1,5 @@
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use super::*;
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use std::time::Instant;
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#[derive(Default)]
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pub struct PurgeStats {
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@ -47,6 +48,10 @@ impl Blockstore {
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///
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/// Dangerous; Use with care
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pub fn purge_from_next_slots(&self, from_slot: Slot, to_slot: Slot) {
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let mut count = 0;
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let mut rewritten = 0;
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let mut last_print = Instant::now();
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let mut total_retain_us = 0;
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for (slot, mut meta) in self
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.slot_meta_iterator(0)
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.expect("unable to iterate over meta")
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@ -55,10 +60,23 @@ impl Blockstore {
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break;
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}
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count += 1;
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if last_print.elapsed().as_millis() > 2000 {
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info!(
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"purged: {} slots rewritten: {} retain_time: {}us",
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count, rewritten, total_retain_us
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);
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count = 0;
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rewritten = 0;
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total_retain_us = 0;
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last_print = Instant::now();
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}
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let mut time = Measure::start("retain");
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let original_len = meta.next_slots.len();
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meta.next_slots
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.retain(|slot| *slot < from_slot || *slot > to_slot);
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if meta.next_slots.len() != original_len {
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rewritten += 1;
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info!(
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"purge_from_next_slots: meta for slot {} no longer refers to slots {:?}",
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slot,
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@ -70,6 +88,8 @@ impl Blockstore {
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)
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.expect("couldn't update meta");
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}
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time.stop();
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total_retain_us += time.as_us();
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}
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}
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