86fc13a52e
The initial impetus for this was that it made unmarshalling sample values much faster. Other relevant benchmark changes in ns/op: Benchmark old new speedup ================================================================== BenchmarkMarshal 179170 127996 1.4x BenchmarkUnmarshal 404984 132186 3.1x BenchmarkMemoryGetValueAtTime 57801 50050 1.2x BenchmarkMemoryGetBoundaryValues 64496 53194 1.2x BenchmarkMemoryGetRangeValues 66585 54065 1.2x BenchmarkStreamAdd 45.0 75.3 0.6x BenchmarkAppendSample1 1157 1587 0.7x BenchmarkAppendSample10 4090 4284 0.95x BenchmarkAppendSample100 45660 44066 1.0x BenchmarkAppendSample1000 579084 582380 1.0x BenchmarkMemoryAppendRepeatingValues 22796594 22005502 1.0x Overall, this gives us good speedups in the areas where they matter most: decoding values from disk and accessing the memory storage (which is also used for views). Some of the smaller append examples take minimally longer, but the cost seems to get amortized over larger appends, so I'm not worried about these. Also, we're currently not bottlenecked on the write path and have plenty of other optimizations available in that area if it becomes necessary. Memory allocations during appends don't change measurably at all. Change-Id: I7dc7394edea09506976765551f35b138518db9e8 |
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|---|---|---|
| .build | ||
| coding/indexable | ||
| config | ||
| documentation | ||
| model | ||
| notification | ||
| retrieval | ||
| rules | ||
| stats | ||
| storage | ||
| tools | ||
| utility | ||
| web | ||
| .gitignore | ||
| .pkgignore | ||
| .travis.yml | ||
| build_info.go | ||
| CONTRIBUTING.md | ||
| CONTRIBUTORS.md | ||
| Dockerfile | ||
| LICENSE | ||
| main.go | ||
| Makefile | ||
| Makefile.INCLUDE | ||
| MANIFEST | ||
| README.md | ||
| tests-for-die-in-a-fire-travis.sh | ||
Prometheus
Bedecke deinen Himmel, Zeus! A new kid is in town.
Prometheus is a generic time series collection and computation server that is useful in the following fields:
- Industrial Experimentation / Real-Time Behavioral Validation / Software Release Qualification
- Econometric and Natural Sciences
- Operational Concerns and Monitoring
The system is designed to collect telemetry from named targets on given intervals, evaluate rule expressions, display the results, and trigger an action if some condition is observed to be true.
Prerequisites
If you read below in the Getting Started section, the build infrastructure will take care of the following things for you in most cases:
- Go 1.1.
- LevelDB: https://code.google.com/p/leveldb/.
- Protocol Buffers Compiler: http://code.google.com/p/protobuf/.
- goprotobuf: the code generator and runtime library: http://code.google.com/p/goprotobuf/.
- Levigo, a Go-wrapper around LevelDB's C library: https://github.com/jmhodges/levigo.
- GoRest, a RESTful style web-services framework: http://code.google.com/p/gorest/.
- Prometheus Client, Prometheus in Prometheus https://github.com/prometheus/client_golang.
- Snappy, a compression library for LevelDB and Levigo http://code.google.com/p/snappy/.
Getting Started
For basic help how to get started:
- The source code is periodically indexed: Prometheus Core.
- For UNIX-like environment users, please consult the Travis CI configuration in .travis.yml and Makefile.
- All of the core developers are accessible via the Prometheus Developers Mailinglist.
General
For first time users, simply run the following:
$ make
$ ARGUMENTS="-configFile=documentation/examples/prometheus.conf" make run
${ARGUMENTS} is passed verbatim into the makefile and thusly Prometheus as
$(ARGUMENTS). This is useful for quick one-off invocations and smoke
testing.
If you run into problems, try the following:
$ SILENCE_THIRD_PARTY_BUILDS=false make
Upon having a satisfactory build, it's possible to create an artifact for end-user distribution:
$ make package
$ find build/package
build/package will be sufficient for whatever archiving mechanism you
choose. The important thing to note is that Go presently does not
staticly link against C dependency libraries, so including the lib
directory is paramount. Providing LD_LIBRARY_PATH or
DYLD_LIBRARY_PATH in a scaffolding shell script is advised.
Problems
If at any point you run into an error with the make build system in terms of
its not properly scaffolding things on a given environment, please file a bug or
open a pull request with your changes if you can fix it yourself.
Please note that we're explicitly shooting for stable runtime environments and not the latest-whiz bang releases; thusly, we ask you to provide ample architecture and release identification remarks for us.
Testing
$ make test
Packaging
$ make package
Race Detector
Go 1.1 includes a race detector which can be enabled at build time. Here's how to use it with Prometheus (assumes that you've already run a successful build).
To run the tests with race detection:
$ GORACE="log_path=/tmp/foo" go test -race ./...
To run the server with race detection:
$ go build -race .
$ GORACE="log_path=/tmp/foo" ./prometheus
Contributing
Refer to CONTRIBUTING.md
License
Apache License 2.0