mirrors/bitcoin
1
0
Fork 0
mirror of https://github.com/bitcoin/bitcoin.git synced 2024-11-19 09:53:47 +01:00
Code Issues Projects Releases Wiki Activity

Add benchmark to write JSON into a string

Browse Source 
The benchmark BlockToJsonVerbose only tests generating (and destroying)
the JSON data structure, but serializing into a string is also a
performance critical aspect of the RPC calls.

Also, use ankerl::nanobench::doNotOptimizeAway to make sure the compiler
can't optimize the result of the calls away.
This commit is contained in:
Martin Ankerl 2021-02-13 10:17:31 +01:00
parent bf3189eda6
commit e3e0a2432c
1 changed files with 39 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
src/bench/rpc_blockchain.cpp
View File

@ -12,25 +12,49 @@
#include <univalue.h>
namespace {
struct TestBlockAndIndex {
TestingSetup test_setup{};
CBlock block{};
uint256 blockHash{};
CBlockIndex blockindex{};
TestBlockAndIndex()
{
CDataStream stream(benchmark::data::block413567, SER_NETWORK, PROTOCOL_VERSION);
char a = '\0';
stream.write(&a, 1); // Prevent compaction
stream >> block;
blockHash = block.GetHash();
blockindex.phashBlock = &blockHash;
blockindex.nBits = 403014710;
}
};
} // namespace
static void BlockToJsonVerbose(benchmark::Bench& bench)
{
TestingSetup test_setup{};
CDataStream stream(benchmark::data::block413567, SER_NETWORK, PROTOCOL_VERSION);
char a = '\0';
stream.write(&a, 1); // Prevent compaction
CBlock block;
stream >> block;
CBlockIndex blockindex;
const uint256 blockHash = block.GetHash();
blockindex.phashBlock = &blockHash;
blockindex.nBits = 403014710;
TestBlockAndIndex data;
bench.run([&] {
(void)blockToJSON(block, &blockindex, &blockindex, /*verbose*/ true);
auto univalue = blockToJSON(data.block, &data.blockindex, &data.blockindex, /*verbose*/ true);
ankerl::nanobench::doNotOptimizeAway(univalue);
});
}
BENCHMARK(BlockToJsonVerbose);
static void BlockToJsonVerboseWrite(benchmark::Bench& bench)
{
TestBlockAndIndex data;
auto univalue = blockToJSON(data.block, &data.blockindex, &data.blockindex, /*verbose*/ true);
bench.run([&] {
auto str = univalue.write();
ankerl::nanobench::doNotOptimizeAway(str);
});
}
BENCHMARK(BlockToJsonVerboseWrite);