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feat: Use the jemalloc global allocator in examples

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Clément Renault 2019-01-01 16:37:15 +01:00
parent 6731025003
commit b070778d44
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4 changed files with 15 additions and 0 deletions
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4
Cargo.toml
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@ -41,9 +41,13 @@ nightly = ["hashbrown/nightly", "group-by/nightly"]
[dev-dependencies] [dev-dependencies]
csv = "1.0" csv = "1.0"
elapsed = "0.1" elapsed = "0.1"
jemallocator = "0.1"
quickcheck = "0.7" quickcheck = "0.7"
rand = "0.6" rand = "0.6"
rand_xorshift = "0.1" rand_xorshift = "0.1"
structopt = "0.2" structopt = "0.2"
tempfile = "3.0" tempfile = "3.0"
termcolor = "1.0" termcolor = "1.0"
[profile.release]
debug = true

5
README.md
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@ -32,6 +32,11 @@ We made some tests on remote machines and found that we can handle with a datase
Network is mesured, servers are located in amsterdam and tests are made between two different datacenters. Network is mesured, servers are located in amsterdam and tests are made between two different datacenters.
### Notes
The default Rust allocator has recently been [changed to use the system allocator](https://github.com/rust-lang/rust/pull/51241/).
We have seen much better performances when [using jemalloc as the global allocator](https://github.com/alexcrichton/jemallocator#documentation).
## Usage and examples ## Usage and examples

3
examples/create-database.rs
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@ -1,3 +1,6 @@
#[global_allocator]
static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;
use std::path::{Path, PathBuf}; use std::path::{Path, PathBuf};
use std::error::Error; use std::error::Error;
use std::borrow::Cow; use std::borrow::Cow;

3
examples/query-database.rs
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@ -1,3 +1,6 @@
#[global_allocator]
static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;
use std::collections::btree_map::{BTreeMap, Entry}; use std::collections::btree_map::{BTreeMap, Entry};
use std::iter::FromIterator; use std::iter::FromIterator;
use std::io::{self, Write}; use std::io::{self, Write};