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fix various bash snippets

This commit is contained in:
Niko Matsakis 2018-09-10 14:38:11 -04:00 committed by Who? Me?!
parent b63805f74e
commit e0507c7bcb
1 changed files with 9 additions and 9 deletions
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18
src/profiling/with_perf.md
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@ -27,8 +27,8 @@ of events, though, like cache misses and so forth.
The basic `perf` command is this: The basic `perf` command is this:
``` ```bash
perf record -F99 --call-graph dwarf XXX > perf record -F99 --call-graph dwarf XXX
``` ```
The `-F99` tells perf to sample at 99 Hz, which avoids generating too The `-F99` tells perf to sample at 99 Hz, which avoids generating too
@ -38,8 +38,8 @@ activity). The `--call-graph dwarf` tells perf to get call-graph
information from debuginfo, which is accurate. The `XXX` is the information from debuginfo, which is accurate. The `XXX` is the
command you want to profile. So, for example, you might do: command you want to profile. So, for example, you might do:
``` ```bash
perf record -F99 --call-graph dwarf cargo +<toolchain> rustc > perf record -F99 --call-graph dwarf cargo +<toolchain> rustc
``` ```
to run `cargo` -- here `<toolchain>` should be the name of the toolchain to run `cargo` -- here `<toolchain>` should be the name of the toolchain
@ -74,9 +74,9 @@ do profiling for you! You can find
For example, to measure the clap-rs test, you might do: For example, to measure the clap-rs test, you might do:
``` ```bash
> ./target/release/collector \ > ./target/release/collector
--output-repo /path/to/place/output \ --output-repo /path/to/place/output
profile perf-record profile perf-record
--rustc /path/to/rustc/executable/from/your/build/directory --rustc /path/to/rustc/executable/from/your/build/directory
--cargo `which cargo` --cargo `which cargo`
@ -179,8 +179,8 @@ would analyze NLL performance.
You can install perf-focus using `cargo install`: You can install perf-focus using `cargo install`:
``` ```bash
cargo install perf-focus > cargo install perf-focus
``` ```
### Example: How much time is spent in MIR borrowck? ### Example: How much time is spent in MIR borrowck?