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@ -50,25 +50,29 @@ Very fast, header only, C++ logging library. [![Build Status](https://travis-ci.
Below are some [benchmarks](bench) comparing popular log libraries under Ubuntu 64 bit, Intel i7-4770 CPU @ 3.40GHz Below are some [benchmarks](bench) comparing popular log libraries under Ubuntu 64 bit, Intel i7-4770 CPU @ 3.40GHz
#### Synchronous mode #### Synchronous mode
Time needed to log 1,000,000 lines in synchronous mode (in seconds, the best of 3 runs): *******************************************************************************
Single thread, 1,000,000 iterations
|threads|boost log 1.54|glog |easylogging |spdlog| *******************************************************************************
|-------|:-------:|:-----:|----------:|------:| basic_st... Elapsed: 0.231041 4,328,228/sec
|1| 4.169s |1.066s |0.975s |0.302s| rotating_st Elapsed: 0.233466 4,283,282/sec
|10| 6.180s |3.032s |2.857s |0.968s| daily_st... Elapsed: 0.244491 4,090,136/sec
|100| 5.981s |1.139s |4.512s |0.497s| null_st... Elapsed: 0.162708 6,145,995/sec
*******************************************************************************
10 threads sharing same logger, 1,000,000 iterations
*******************************************************************************
basic_mt... Elapsed: 0.854029 1,170,920/sec
rotating_mt Elapsed: 0.867038 1,153,351/sec
daily_mt... Elapsed: 0.869593 1,149,963/sec
null_mt... Elapsed: 0.171215 5,840,602/sec
#### Asynchronous mode #### Asynchronous mode
Time needed to log 1,000,000 lines in asynchronous mode, i.e. the time it takes to put them in the async queue (in seconds, the best of 3 runs): *******************************************************************************
async logging.. 10 threads sharing same logger, 1,000,000 iterations
|threads|g2log <sup>async logger</sup> |spdlog <sup>async mode</sup>| *******************************************************************************
|:-------|:-----:|-------------------------:| async... Elapsed: 0.442731 2,258,706/sec
|1| 1.850s |0.216s | async... Elapsed: 0.427072 2,341,527/sec
|10| 0.943s |0.173s| async... Elapsed: 0.449768 2,223,369/sec
|100| 0.959s |0.202s|
## Usage Example ## Usage Example