From f7446d46005f4634f5baef101af0eb80bd30c2ff Mon Sep 17 00:00:00 2001
From: blyxyas <blyxyas@gmail.com>
Date: Sun, 26 Nov 2023 20:23:35 +0100
Subject: [PATCH] Document this

---
 collector/README.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/collector/README.md b/collector/README.md
index 488517d5a..8e288f8ea 100644
--- a/collector/README.md
+++ b/collector/README.md
@@ -155,6 +155,8 @@ The following options alter the behaviour of the `bench_local` subcommand.
 `RUST_LOG=debug` can be specified to enable verbose logging, which is useful
 for debugging `collector` itself.
 
+`ZTHREADS=<number of threads>` can be used for builds with `parallel-compiler = true` in the build's `config.toml`. This will set up that number as a flag when compiling the benchmarks.
+
 ### How to compare different versions on your own machine
 
 Often you'll want to compare two different compiler versions. For example, you