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Merge #249

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249: Use half of the computer threads for the indexing process by default r=Kerollmops a=irevoire

closes #241 
By default, we use only half of the CPU threads when indexing documents; this allows the user to use the search while indexing. Also, the machine will not appear unresponsive when indexing a large batch of documents.

On the special case where a user only has one core, we use it entirely 😄 

Co-authored-by: Tamo <tamo@meilisearch.com>
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bors[bot] 2021-06-28 15:25:11 +00:00 committed by GitHub
commit b0f399a51d
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3 changed files with 3 additions and 1 deletions
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1
Cargo.lock generated
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@ -1631,6 +1631,7 @@ dependencies = [
"milli", "milli",
"mime", "mime",
"mockall", "mockall",
"num_cpus",
"obkv", "obkv",
"once_cell", "once_cell",
"oxidized-json-checker", "oxidized-json-checker",

1
meilisearch-http/Cargo.toml
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@ -53,6 +53,7 @@ meilisearch-tokenizer = { git = "https://github.com/meilisearch/tokenizer.git",
memmap = "0.7.0" memmap = "0.7.0"
milli = { git = "https://github.com/meilisearch/milli.git", tag = "v0.6.0" } milli = { git = "https://github.com/meilisearch/milli.git", tag = "v0.6.0" }
mime = "0.3.16" mime = "0.3.16"
num_cpus = "1.13.0"
once_cell = "1.5.2" once_cell = "1.5.2"
oxidized-json-checker = "0.3.2" oxidized-json-checker = "0.3.2"
parking_lot = "0.11.1" parking_lot = "0.11.1"

2
meilisearch-http/src/index/update_handler.rs
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@ -23,7 +23,7 @@ pub struct UpdateHandler {
impl UpdateHandler { impl UpdateHandler {
pub fn new(opt: &IndexerOpts) -> anyhow::Result<Self> { pub fn new(opt: &IndexerOpts) -> anyhow::Result<Self> {
let thread_pool = rayon::ThreadPoolBuilder::new() let thread_pool = rayon::ThreadPoolBuilder::new()
.num_threads(opt.indexing_jobs.unwrap_or(0)) .num_threads(opt.indexing_jobs.unwrap_or(num_cpus::get() / 2))
.build()?; .build()?;
Ok(Self { Ok(Self {
max_nb_chunks: opt.max_nb_chunks, max_nb_chunks: opt.max_nb_chunks,