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#![feature(test)]
extern crate libc;
extern crate lmdb;
extern crate lmdb_sys as ffi;
extern crate rand;
extern crate test;
mod utils;
use ffi::*;
use libc::size_t;
use lmdb::{
Transaction,
WriteFlags,
};
use rand::{
Rng,
XorShiftRng,
};
use std::ptr;
use test::{
black_box,
Bencher,
};
use utils::*;
#[bench]
fn bench_get_rand(b: &mut Bencher) {
let n = 100u32;
let (_dir, env) = setup_bench_db(n);
let db = env.open_db(None).unwrap();
let txn = env.begin_ro_txn().unwrap();
let mut keys: Vec<String> = (0..n).map(get_key).collect();
XorShiftRng::new_unseeded().shuffle(&mut keys[..]);
b.iter(|| {
let mut i = 0usize;
for key in &keys {
i += txn.get(db, key).unwrap().len();
}
black_box(i);
});
}
#[bench]
fn bench_get_rand_raw(b: &mut Bencher) {
let n = 100u32;
let (_dir, env) = setup_bench_db(n);
let db = env.open_db(None).unwrap();
let _txn = env.begin_ro_txn().unwrap();
let mut keys: Vec<String> = (0..n).map(get_key).collect();
XorShiftRng::new_unseeded().shuffle(&mut keys[..]);
let dbi = db.dbi();
let txn = _txn.txn();
let mut key_val: MDB_val = MDB_val {
mv_size: 0,
mv_data: ptr::null_mut(),
};
let mut data_val: MDB_val = MDB_val {
mv_size: 0,
mv_data: ptr::null_mut(),
};
b.iter(|| unsafe {
let mut i: size_t = 0;
for key in &keys {
key_val.mv_size = key.len() as size_t;
key_val.mv_data = key.as_bytes().as_ptr() as *mut _;
mdb_get(txn, dbi, &mut key_val, &mut data_val);
i += key_val.mv_size;
}
black_box(i);
});
}
#[bench]
fn bench_put_rand(b: &mut Bencher) {
let n = 100u32;
let (_dir, env) = setup_bench_db(0);
let db = env.open_db(None).unwrap();
let mut items: Vec<(String, String)> = (0..n).map(|n| (get_key(n), get_data(n))).collect();
XorShiftRng::new_unseeded().shuffle(&mut items[..]);
b.iter(|| {
let mut txn = env.begin_rw_txn().unwrap();
for &(ref key, ref data) in items.iter() {
txn.put(db, key, data, WriteFlags::empty()).unwrap();
}
txn.abort();
});
}
#[bench]
fn bench_put_rand_raw(b: &mut Bencher) {
let n = 100u32;
let (_dir, _env) = setup_bench_db(0);
let db = _env.open_db(None).unwrap();
let mut items: Vec<(String, String)> = (0..n).map(|n| (get_key(n), get_data(n))).collect();
XorShiftRng::new_unseeded().shuffle(&mut items[..]);
let dbi = db.dbi();
let env = _env.env();
let mut key_val: MDB_val = MDB_val {
mv_size: 0,
mv_data: ptr::null_mut(),
};
let mut data_val: MDB_val = MDB_val {
mv_size: 0,
mv_data: ptr::null_mut(),
};
b.iter(|| unsafe {
let mut txn: *mut MDB_txn = ptr::null_mut();
mdb_txn_begin(env, ptr::null_mut(), 0, &mut txn);
let mut i: ::libc::c_int = 0;
for &(ref key, ref data) in items.iter() {
key_val.mv_size = key.len() as size_t;
key_val.mv_data = key.as_bytes().as_ptr() as *mut _;
data_val.mv_size = data.len() as size_t;
data_val.mv_data = data.as_bytes().as_ptr() as *mut _;
i += mdb_put(txn, dbi, &mut key_val, &mut data_val, 0);
}
assert_eq!(0, i);
mdb_txn_abort(txn);
});
}
|
