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chore: tiered fixes (#3393)

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1. Use introsive::list for CoolQueue.
2. Make sure that we ignore cool memory usage when computing average object size to
   prevent evictions during dashtable growth attempts.
3. Remove items from the cool storage before evicting them from the dash table.

Signed-off-by: Roman Gershman <roman@dragonflydb.io>
This commit is contained in:
Roman Gershman 2024-07-25 23:38:44 +03:00 • committed by GitHub
parent 2867d54a05
commit 0a26a06065
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11 changed files with 131 additions and 194 deletions
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3
src/server/engine_shard_set.cc
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@ -738,6 +738,9 @@ void EngineShard::CacheStats() {
}
}
DCHECK_EQ(table_memory, db_slice.table_memory());
if (tiered_storage_) {
table_memory += tiered_storage_->CoolMemoryUsage();
}
size_t obj_memory = table_memory <= used_mem ? used_mem - table_memory : 0;
size_t bytes_per_obj = entries > 0 ? obj_memory / entries : 0;