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https://github.com/basecamp/trashed
Tell StatsD about request time, GC, objects and more. Latest Rails 4 and Ruby 2.1 support, and ancient Rails 2 and Ruby 1.8 support.
https://github.com/basecamp/trashed
instrument rack ruby statsd
Last synced: about 1 month ago
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Tell StatsD about request time, GC, objects and more. Latest Rails 4 and Ruby 2.1 support, and ancient Rails 2 and Ruby 1.8 support.
- Host: GitHub
- URL: https://github.com/basecamp/trashed
- Owner: basecamp
- License: mit
- Created: 2009-08-25T01:39:34.000Z (over 15 years ago)
- Default Branch: master
- Last Pushed: 2022-01-31T21:53:52.000Z (almost 3 years ago)
- Last Synced: 2024-11-17T14:47:52.345Z (about 1 month ago)
- Topics: instrument, rack, ruby, statsd
- Language: Ruby
- Homepage:
- Size: 68.4 KB
- Stars: 191
- Watchers: 21
- Forks: 23
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
- License: MIT-LICENSE
Awesome Lists containing this project
README
## Trashed
# Keep an eye on resource usage.
- Sends per-request object counts, heap growth, GC time, and more to StatsD.
- Sends snapshots of resource usage, e.g. live String objects, to StatsD.
- Supports new stuff: Rails 5.1 and latest Ruby 2.x features.
- Supports old stuff: Rails 2/3/4, Ruby 1.9+, REE, Ruby 1.8 with RubyBench patches.
## Setup
### Rails 5
On Rails 5 (and Rails 3 and 4), add this to the top of `config/application.rb`:
require 'trashed/railtie'
And in the body of your app config:
module YourApp
class Application < Rails::Application
config.trashed.statsd = YourApp.statsd
### Rails 2
On Rails 2, add the middleware to `config/environment.rb`:
Rails::Initializer.run do |config|
reporter = Trashed::Reporter.new
reporter.logger = Rails.logger
reporter.statsd = YourApp.statsd
config.middleware.use Trashed::Rack, reporter
end
### Custom dimensions
You probably want stats per controller, action, right?
Set a `#timing_dimensions` lambda to return a list of dimensions to
qualify per-request measurements like time elapsed, GC time, objects
allocated, etc.
For example:
```ruby
config.trashed.timing_dimensions = ->(env) do
# Rails 3, 4, and 5, set this. Other Rack endpoints won't have it.
if controller = env['action_controller.instance']
name = controller.controller_name
action = controller.action_name
format = controller.rendered_format || :none
variant = controller.request.variant || :none # Rails 4.1+ only!
[ :All,
:"Controllers.#{name}",
:"Actions.#{name}.#{action}.#{format}+#{variant}" ]
end
end
```
Results in metrics like:
```
YourNamespace.All.Time.wall
YourNamespace.Controllers.SessionsController.Time.wall
YourNamespace.Actions.SessionsController.index.json+phone.Time.wall
```
Similarly, set a `#gauge_dimensions` lambda to return a list of dimensions to
qualify measurements which gauge current state, like heap slots used or total
number of live String objects.
For example:
```ruby
config.trashed.gauge_dimensions = ->(env) {
[ :All,
:"Stage.#{Rails.env}",
:"Hosts.#{`hostname -s`.chomp}" ]
}
```
Results in metrics like:
```
YourNamespace.All.Objects.T_STRING
YourNamespace.Stage.production.Objects.T_STRING
YourNamespace.Hosts.host-001.Objects.T_STRING
```
### Version history
*3.2.8* (January 31, 2022)
* REE: Fix that GC.time is reported in microseconds instead of milliseconds
*3.2.7* (November 8, 2017)
* Ruby 1.8.7 compatibility
*3.2.6* (June 21, 2017)
* Mention Rails 5 support
*3.2.5* (Feb 26, 2015)
* Support Ruby 2.2 GC.stat naming, avoiding 2.1 warnings
*3.2.4* (July 25, 2014)
* Fix compatibility with Rails 3.x tagged logging - @calavera
*3.2.3* (June 23, 2014)
* Report CPU/Idle time in tenths of a percent
*3.2.2* (March 31, 2014)
* Reduce default sampling rates.
* Stop gauging all GC::Profiler data. Too noisy.
* Report gauge readings as StatsD timings.
* Support providing a Statsd::Batch since using Statsd#batch
results in underfilled packets at low sample rates.
* Fix bug with sending arrays of timings to StatsD.
* Record GC timings in milliseconds.
*3.1.0* (March 30, 2014)
* Report percent CPU/idle time: Time.pct.cpu and Time.pct.idle.
* Measure out-of-band GC count, time, and stats. Only meaningful for
single-threaded servers like Unicorn. But then again so is per-request
GC monitoring.
* Support @tmm1's GC::OOB (https://github.com/tmm1/gctools).
* Measure time between GCs.
* Spiff up logger reports with more timings.
* Support Rails log tags on logged reports.
* Allow instruments' #start to set timings/gauges.
*3.0.1* (March 30, 2014)
* Sample requests to instrument based on StatsD sample rate.
*3.0.0* (March 29, 2014)
* Support new Ruby 2.0 and 2.1 GC stats.
* Gauge GC details with GC::Profiler.
* Performance rework. Faster, fewer allocations.
* Rework counters and gauges as instruments.
* Batch StatsD messages to decrease overhead on the server.
* Drop NewRelic samplers.
*2.0.5* (December 15, 2012)
* Relax outdated statsd-ruby dependency.
*2.0.0* (December 1, 2011)
* Rails 3 support.
* NewRelic samplers.
*1.0.0* (August 24, 2009)
* Initial release.