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fix long lines

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Niko Matsakis 2018-08-31 13:50:06 -04:00 committed by Who? Me?!
parent 32d9134202
commit 02cafc9b6c
1 changed files with 4 additions and 2 deletions
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src/profiling/with_perf.md
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@ -4,7 +4,8 @@ This is a guide for how to profile rustc with [perf](https://perf.wiki.kernel.or
## Initial steps ## Initial steps
- Get a clean checkout of rust-lang/master, or whatever it is you want to profile. - Get a clean checkout of rust-lang/master, or whatever it is you want
to profile.
- Set the following settings in your `config.toml`: - Set the following settings in your `config.toml`:
- `debuginfo-lines = true` - `debuginfo-lines = true`
- `use-jemalloc = false` — lets you do memory use profiling with valgrind - `use-jemalloc = false` — lets you do memory use profiling with valgrind
@ -248,7 +249,8 @@ Tree
What happens with `--tree-callees` is that What happens with `--tree-callees` is that
- we find each sample matching the regular expression - we find each sample matching the regular expression
- we look at the code that is occurs *after* the regex match and try to build up a call tree - we look at the code that is occurs *after* the regex match and try
to build up a call tree
The `--tree-min-percent 3` option says "only show me things that take The `--tree-min-percent 3` option says "only show me things that take
more than 3% of the time. Without this, the tree often gets really more than 3% of the time. Without this, the tree often gets really