Differential D4221 Diff 13383 src/test/cuckoocache_tests.cpp

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src/test/cuckoocache_tests.cpp

Show First 20 Lines • Show All 64 Lines • ▼ Show 20 Lines	static double test_cache(size_t megabytes, double load) {
}		}
/**		/**
* We make a copy of the hashes because future optimizations of the		* We make a copy of the hashes because future optimizations of the
* cuckoocache may overwrite the inserted element, so the test is "future		* cuckoocache may overwrite the inserted element, so the test is "future
* proofed".		* proofed".
*/		*/
std::vector<uint256> hashes_insert_copy = hashes;		std::vector<uint256> hashes_insert_copy = hashes;
/** Do the insert */		/** Do the insert */
for (uint256 &h : hashes_insert_copy) {		for (const uint256 &h : hashes_insert_copy) {
set.insert(h);		set.insert(h);
}		}
/** Count the hits */		/** Count the hits */
uint32_t count = 0;		uint32_t count = 0;
for (uint256 &h : hashes) {		for (const uint256 &h : hashes) {
count += set.contains(h, false);		count += set.contains(h, false);
}		}
double hit_rate = double(count) / double(n_insert);		double hit_rate = double(count) / double(n_insert);
return hit_rate;		return hit_rate;
}		}

/** The normalized hit rate for a given load.		/** The normalized hit rate for a given load.
*		*
▲ Show 20 Lines • Show All 235 Lines • ▼ Show 20 Lines	struct block_activity {
}		}
}		}
for (uint32_t i = 0; i < n_insert / 4; ++i) {		for (uint32_t i = 0; i < n_insert / 4; ++i) {
reads.push_back(inserts[i]);		reads.push_back(inserts[i]);
}		}
for (uint32_t i = n_insert - (n_insert / 4); i < n_insert; ++i) {		for (uint32_t i = n_insert - (n_insert / 4); i < n_insert; ++i) {
reads.push_back(inserts[i]);		reads.push_back(inserts[i]);
}		}
for (auto h : inserts) {		for (const auto &h : inserts) {
c.insert(h);		c.insert(h);
}		}
}		}
};		};

const uint32_t BLOCK_SIZE = 1000;		const uint32_t BLOCK_SIZE = 1000;
// We expect window size 60 to perform reasonably given that each epoch		// We expect window size 60 to perform reasonably given that each epoch
// stores 45% of the cache size (~472k).		// stores 45% of the cache size (~472k).
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