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Configurable data payload size for dbsim.

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This commit is contained in:
Teemu Ollakka
2020-06-26 13:41:30 +03:00
parent 94f5696010
commit 593f737605
4 changed files with 24 additions and 7 deletions
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22
dbsim/db_client.cpp
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@ -34,10 +34,13 @@ db::client::client(db::server& server,
, client_state_(mutex_, cond_, server_state_, client_service_, client_id, mode)
, client_service_(*this)
, se_trx_(server.storage_engine())
, data_()
, random_device_()
, random_engine_(random_device_())
, stats_()
{ }
{
data_.resize(params.max_data_size);
}
void db::client::start()
{
@ -119,18 +122,23 @@ void db::client::run_one_transaction()
assert(transaction.active());
assert(err == 0);
std::uniform_int_distribution<size_t> uniform_dist(0, params_.n_rows);
const size_t data(uniform_dist(random_engine_));
std::ostringstream os;
os << data;
const size_t randkey(uniform_dist(random_engine_));
::memcpy(data_.data(), &randkey,
std::min(sizeof(randkey), data_.size()));
wsrep::key key(wsrep::key::exclusive);
key.append_key_part("dbms", 4);
unsigned long long client_key(client_state_.id().get());
key.append_key_part(&client_key, sizeof(client_key));
key.append_key_part(&data, sizeof(data));
key.append_key_part(&randkey, sizeof(randkey));
err = client_state_.append_key(key);
size_t bytes_to_append(data_.size());
if (params_.random_data_size)
{
bytes_to_append = std::uniform_int_distribution<size_t>(
1, data_.size())(random_engine_);
}
err = err || client_state_.append_data(
wsrep::const_buffer(os.str().c_str(),
os.str().size()));
wsrep::const_buffer(data_.data(), bytes_to_append));
return err;
});