diff options
Diffstat (limited to 'src/benchmark/benchmark.cpp')
| -rw-r--r-- | src/benchmark/benchmark.cpp | 226 |
1 files changed, 91 insertions, 135 deletions
diff --git a/src/benchmark/benchmark.cpp b/src/benchmark/benchmark.cpp index a9b84f252..771654234 100644 --- a/src/benchmark/benchmark.cpp +++ b/src/benchmark/benchmark.cpp @@ -1,6 +1,6 @@ /* * Runtime benchmarking -* (C) 2008-2009 Jack Lloyd +* (C) 2008-2009,2013 Jack Lloyd * * Distributed under the terms of the Botan license */ @@ -9,6 +9,7 @@ #include <botan/buf_comp.h> #include <botan/block_cipher.h> #include <botan/stream_cipher.h> +#include <botan/aead.h> #include <botan/hash.h> #include <botan/mac.h> #include <memory> @@ -19,117 +20,119 @@ namespace Botan { namespace { -typedef std::chrono::high_resolution_clock benchmark_clock; - -/** -* Benchmark Buffered_Computation (hash or MAC) -*/ -std::pair<u64bit, u64bit> bench_buf_comp(Buffered_Computation* buf_comp, - std::chrono::nanoseconds max_time, - const byte buf[], size_t buf_len) +double time_op(std::chrono::nanoseconds runtime, std::function<void ()> op) { - u64bit reps = 0; - std::chrono::nanoseconds time_used(0); + size_t reps = 0; - while(time_used < max_time) - { - auto start = benchmark_clock::now(); - buf_comp->update(buf, buf_len); - time_used += std::chrono::duration_cast<std::chrono::nanoseconds>(benchmark_clock::now() - start); + auto start = std::chrono::high_resolution_clock::now(); + while(time_used < runtime) + { + op(); ++reps; + time_used = std::chrono::high_resolution_clock::now() - start; } - u64bit ns_taken = - std::chrono::duration_cast<std::chrono::nanoseconds>(time_used).count(); + const u64bit nsec_used = std::chrono::duration_cast<std::chrono::nanoseconds>(time_used).count(); + + const double seconds_used = static_cast<double>(nsec_used) / 1000000000; - return std::make_pair(reps * buf_len, ns_taken); + return reps / seconds_used; // ie, return ops per second } -/** -* Benchmark block cipher -*/ -std::pair<u64bit, u64bit> -bench_block_cipher(BlockCipher* block_cipher, - std::chrono::nanoseconds max_time, - byte buf[], size_t buf_len) +} + +std::map<std::string, double> +time_algorithm_ops(const std::string& name, + Algorithm_Factory& af, + const std::string& provider, + RandomNumberGenerator& rng, + std::chrono::nanoseconds runtime, + size_t buf_size) { - const size_t in_blocks = buf_len / block_cipher->block_size(); + const size_t Mebibyte = 1024*1024; - u64bit reps = 0; + secure_vector<byte> buffer(buf_size * 1024); + rng.randomize(&buffer[0], buffer.size()); - std::chrono::nanoseconds time_used(0); + const double mb_mult = buffer.size() / static_cast<double>(Mebibyte); - block_cipher->set_key(buf, block_cipher->maximum_keylength()); - - while(time_used < max_time) + if(const BlockCipher* proto = af.prototype_block_cipher(name, provider)) { - auto start = benchmark_clock::now(); - block_cipher->encrypt_n(buf, buf, in_blocks); - time_used += std::chrono::duration_cast<std::chrono::nanoseconds>(benchmark_clock::now() - start); - //time_used += benchmark_clock::now() - start; + std::unique_ptr<BlockCipher> bc(proto->clone()); - ++reps; - } + const SymmetricKey key(rng, bc->maximum_keylength()); - u64bit ns_taken = - std::chrono::duration_cast<std::chrono::nanoseconds>(time_used).count(); + return std::map<std::string, double>({ + { "key schedule", time_op(runtime / 8, [&]() { bc->set_key(key); }) }, + { "encrypt", mb_mult * time_op(runtime / 2, [&]() { bc->encrypt(buffer); }) }, + { "decrypt", mb_mult * time_op(runtime / 2, [&]() { bc->decrypt(buffer); }) }, + }); + } + else if(const StreamCipher* proto = af.prototype_stream_cipher(name, provider)) + { + std::unique_ptr<StreamCipher> sc(proto->clone()); - return std::make_pair(reps * in_blocks * block_cipher->block_size(), - ns_taken); - } + const SymmetricKey key(rng, sc->maximum_keylength()); -/** -* Benchmark stream -*/ -std::pair<u64bit, u64bit> -bench_stream_cipher(StreamCipher* stream_cipher, - std::chrono::nanoseconds max_time, - byte buf[], size_t buf_len) - { - u64bit reps = 0; + return std::map<std::string, double>({ + { "key schedule", time_op(runtime / 8, [&]() { sc->set_key(key); }) }, + { "", mb_mult * time_op(runtime, [&]() { sc->encipher(buffer); }) }, + }); + } + else if(const HashFunction* proto = af.prototype_hash_function(name, provider)) + { + std::unique_ptr<HashFunction> h(proto->clone()); - stream_cipher->set_key(buf, stream_cipher->maximum_keylength()); + return std::map<std::string, double>({ + { "", mb_mult * time_op(runtime, [&]() { h->update(buffer); }) }, + }); + } + else if(const MessageAuthenticationCode* proto = af.prototype_mac(name, provider)) + { + std::unique_ptr<MessageAuthenticationCode> mac(proto->clone()); - std::chrono::nanoseconds time_used(0); + const SymmetricKey key(rng, mac->maximum_keylength()); - while(time_used < max_time) + return std::map<std::string, double>({ + { "key schedule", time_op(runtime / 8, [&]() { mac->set_key(key); }) }, + { "", mb_mult * time_op(runtime, [&]() { mac->update(buffer); }) }, + }); + } + else { - auto start = benchmark_clock::now(); - stream_cipher->cipher1(buf, buf_len); - time_used += benchmark_clock::now() - start; + std::unique_ptr<AEAD_Mode> enc(get_aead(name, ENCRYPTION)); + std::unique_ptr<AEAD_Mode> dec(get_aead(name, DECRYPTION)); - ++reps; - } + if(enc && dec) + { + const SymmetricKey key(rng, enc->maximum_keylength()); - u64bit ns_taken = - std::chrono::duration_cast<std::chrono::nanoseconds>(time_used).count(); + return std::map<std::string, double>({ + { "key schedule", time_op(runtime / 4, [&]() { enc->set_key(key); dec->set_key(key); }) / 2 }, + { "encrypt", mb_mult * time_op(runtime / 2, [&]() { enc->update(buffer, 0); buffer.resize(buf_size*1024); }) }, + { "decrypt", mb_mult * time_op(runtime / 2, [&]() { dec->update(buffer, 0); buffer.resize(buf_size*1024); }) }, + }); + } + } - return std::make_pair(reps * buf_len, ns_taken); + return std::map<std::string, double>(); } -/** -* Benchmark hash -*/ -std::pair<u64bit, u64bit> -bench_hash(HashFunction* hash, - std::chrono::nanoseconds max_time, - const byte buf[], size_t buf_len) - { - return bench_buf_comp(hash, max_time, buf, buf_len); - } +namespace { -/** -* Benchmark MAC -*/ -std::pair<u64bit, u64bit> -bench_mac(MessageAuthenticationCode* mac, - std::chrono::nanoseconds max_time, - const byte buf[], size_t buf_len) +double find_first_in(const std::map<std::string, double>& m, + const std::vector<std::string>& keys) { - mac->set_key(buf, mac->maximum_keylength()); - return bench_buf_comp(mac, max_time, buf, buf_len); + for(auto key : keys) + { + auto i = m.find(key); + if(i != m.end()) + return i->second; + } + + throw std::runtime_error("algorithm_factory no usable keys found in result"); } } @@ -141,62 +144,15 @@ algorithm_benchmark(const std::string& name, std::chrono::milliseconds milliseconds, size_t buf_size) { - std::vector<std::string> providers = af.providers_of(name); - std::map<std::string, double> all_results; - - if(providers.empty()) // no providers, nothing to do - return all_results; - - std::chrono::nanoseconds ns_per_provider = milliseconds / providers.size(); + const std::vector<std::string> providers = af.providers_of(name); + const std::chrono::nanoseconds ns_per_provider = milliseconds / providers.size(); - std::vector<byte> buf(buf_size * 1024); - rng.randomize(&buf[0], buf.size()); + std::map<std::string, double> all_results; // provider -> ops/sec - for(size_t i = 0; i != providers.size(); ++i) + for(auto provider : providers) { - const std::string provider = providers[i]; - - std::pair<u64bit, u64bit> results(0, 0); - - if(const BlockCipher* proto = - af.prototype_block_cipher(name, provider)) - { - std::unique_ptr<BlockCipher> block_cipher(proto->clone()); - results = bench_block_cipher(block_cipher.get(), - ns_per_provider, - &buf[0], buf.size()); - } - else if(const StreamCipher* proto = - af.prototype_stream_cipher(name, provider)) - { - std::unique_ptr<StreamCipher> stream_cipher(proto->clone()); - results = bench_stream_cipher(stream_cipher.get(), - ns_per_provider, - &buf[0], buf.size()); - } - else if(const HashFunction* proto = - af.prototype_hash_function(name, provider)) - { - std::unique_ptr<HashFunction> hash(proto->clone()); - results = bench_hash(hash.get(), ns_per_provider, - &buf[0], buf.size()); - } - else if(const MessageAuthenticationCode* proto = - af.prototype_mac(name, provider)) - { - std::unique_ptr<MessageAuthenticationCode> mac(proto->clone()); - results = bench_mac(mac.get(), ns_per_provider, - &buf[0], buf.size()); - } - - if(results.first && results.second) - { - /* 953.67 == 1000 * 1000 * 1000 / 1024 / 1024 - the conversion - factor from bytes per nanosecond to mebibytes per second. - */ - double speed = (953.67 * results.first) / results.second; - all_results[provider] = speed; - } + auto results = time_algorithm_ops(name, af, provider, rng, ns_per_provider, buf_size); + all_results[provider] = find_first_in(results, { "", "update", "encrypt" }); } return all_results; |