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Gabi Melman 2014-11-04 01:43:20 +02:00
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@ -25,21 +25,24 @@ Just copy the files to your build tree and use a C++11 compiler
* Logging levels
* Custom formatting with user defined patterns
## Benchmarks
Here are some benchmarks (Ubuntu 64 bits, Intel i7-4770 CPU @ 3.40GHz)
```
*******************************************************************************
Single thread, 250,000 iterations, flush every 1000 lines
*******************************************************************************
rotating_st... 817,860 lines/sec
daily_st... 827,820 lines /sec
## Benchmarks comparison
Here are some [benchmarks](bench-comparison) comparing spdlog vs boost log(1.56.0) on Ubuntu 64 bits, Intel i7-4770 CPU @ 3.40GHz.
The bench writes 1000,000 log lines to a rotating log file of size 10MB with 5 back rotated files.
The multi threaded test uses a shared logger object across 10 threads.
|library|log lines|threads|elapsed|
|-------|:-------:|:-----:|------:|
|*boost*|1000,000|1|**4.207s**|
|*spdlog*|1000,000|1|**0.975s**|
|library|log lines|threads|elapsed|
|-------|:-------:|:-----:|------:|
|*boost*|1000,000|10|**6.592s**|
|*spdlog log*|1000,000|10|**0.961s**|
*******************************************************************************
4 threads sharing same logger, 250,000 iterations, flush every 1000 lines
*******************************************************************************
rotating_mt... 1,476,013 lines/sec
daily_mt... 1,477,619 lines/sec
```
## Usage Example
```c++