tracing
criterion.rs
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tracing | criterion.rs | |
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52 | 30 | |
4,856 | 4,094 | |
4.5% | - | |
8.1 | 6.7 | |
3 days ago | 3 days ago | |
Rust | Rust | |
MIT License | Apache License 2.0 |
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tracing
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Vendor lock-in is in the small details
> What's been your biggest issues around ergonomics/amenities for OpenTelemetry?
I can't speak generally, but in the Rust ecosystem the various crates don't play well together. Here's one example: <https://github.com/tokio-rs/tracing/issues/2648> There are four crates involved (tracing-attributes, tracing-opentelemetry, opentelemetry, and opentelemetry-datadog) and none of them fit properly into any of the others.
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Grimoire - A recipe management application.
The tracing (logging) mechanism in an asynchronous codebase (tracing).
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How easy is it to swap out your async runtime?
Tracing is Tokio's alternative for async code.
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Hey Rustaceans! Got a question? Ask here (27/2023)!
At a technical level, in Rust, both [tracing]https://crates.io/crates/tracing) and log are entire ecosystems (though for the latter at least there's also third party logging frameworks), and there's at least a bridge from log to tracing.
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A locking war story
I've used the tracing infrastructure with tracing_flame to profile some hot paths in async code: https://github.com/tokio-rs/tracing/tree/master/tracing-flame
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I was wrong about rust
Oh nice! IIRC when I checked, it was the Unicode tables that smashed the code size. I recently hit the same issue with the tracing crate, where a crate feature (for env var filtering) pulled in regex and my binary was suddenly 1MB bigger.
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Debugging and profiling embedded applications.
I know about tools such as tracing, jaeger or tracy. While having a complete tracing could be a potential solution, these tools don't work with no_std.
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Custom Axum Logging for Routes?
tracing by itself only outputs log data, you need to consume them in a subscriber, the tracing-subscriber crate exists for this. (example)
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Trace Through a Kafka Cluster with Rust and OpenTelemetry
Let's look at some code. We have different ways to create spans in Rust. In this article, we focus on creating spans manually, not covering any abstractions such as tracing.
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Hey Rustaceans! Got a question? Ask here (10/2023)!
Is there a standard crate / tool / practice for simplistic logging with Tokio? I presume it's tokio-tracing but there seems to be many bells and whistles when I'm looking for what amounts to essentially an async stderr with concurrent buffering.
criterion.rs
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How to benchmark in Rust with libtest bench
The three popular options for benchmarking in Rust are: libtest bench, Criterion, and Iai.
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Divan: Fast and Simple Benchmarking for Rust
Holy crap. I was just writing a blog to complain about the state of Rust benchmarking and I think this might address most of my points. The biggest one is the ability to have benchmarks collocated within the library like tests which is the biggest annoyance.
It’s also nice to see that it can report multiple counters in parallel. I put up a similar feature[1] for criterion recently but I fear the project isn’t being maintained anymore…
Haven’t looked deeply into divan yet but the other requirements I have for criterion’s power is to run tests with statistical guarantees on the results, terminate quickly when statistical significance is reached (—quick), provide a comparison of the delta from a previous benchmark, and to run async code. Wonder how this stacks up.
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how expensive is an operation?
criterion for benchmarks,
- Autometrics 0.4: Spot commits that introduce errors or slow down your application
- making a virtual machine in rust
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How much does Rust's bounds checking cost?
https://github.com/bheisler/criterion.rs is good for tests like that. It will give you much more than a single number and handle things like outliers. This makes identifying noisy tests simpler.
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Rust 1.64 Became 10-20% Faster On Windows
Criterion is still the gold standard.
Pros for Criterion over the stdlib: https://github.com/bheisler/criterion.rs#features
Downsides of Criterion: https://bheisler.github.io/criterion.rs/book/user_guide/know...
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Criterion.rs with MockClock, is this possible?
Now I would like to benchmark a few implementations and have taken Criterion.rs as this also works with Rust stable. With a little trial and error, it also works with my project that works with workspaces.
the cfg flag test is not carried over to the criterion benchmarks, see https://github.com/bheisler/criterion.rs/issues/448 and https://github.com/rust-lang/cargo/issues/8897
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Lookup table slower than doing the math, and SIMD operations 10x slower than that.
Criterion is easy to use.
What are some alternatives?
log4rs - A highly configurable logging framework for Rust
slog - Structured, contextual, extensible, composable logging for Rust
env_logger - A logging implementation for `log` which is configured via an environment variable.
log - Logging implementation for Rust
opentelemetry-rust - The Rust OpenTelemetry implementation
vector - A high-performance observability data pipeline.
hyperfine - A command-line benchmarking tool
flamegraph - Easy flamegraphs for Rust projects and everything else, without Perl or pipes <3
warp - A super-easy, composable, web server framework for warp speeds.
sqlglot - Python SQL Parser and Transpiler
glassbench - A micro-benchmark framework to use with cargo bench
sccache - Sccache is a ccache-like tool. It is used as a compiler wrapper and avoids compilation when possible. Sccache has the capability to utilize caching in remote storage environments, including various cloud storage options, or alternatively, in local storage.