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BitMQ 是一款开源消息队列与消息代理服务端程序。
BitMQ 支持在 GNU/Linux 以及 Windows 上运行。BitMQ 目前在 Windows 下使用 select 模型，不建议用于高负载环境。
编译 BitMQ 需要安装 openssl (>=1.0.2，用以支持 HTTPS)，zlib (>=1.2.0.4，用以支持 GZIP)。您可以使用包管理工具安装或者下载源代码编译安装
centos/redhat# yum install openssl-devel openssl zlib-devel zlib
debian/ubuntu# apt-get install libssl-dev openssl zlib1g-dev zlib1g
BitMQ 使用 CMake (>=2.8) 进行构建。您可以在源码目录下使用以下命令构建
mkdir build
cd build
cmake ..
make
您也可以在 Winodws 下使用 CMake 以及 Visual Studio 进行构建，或者直接下载已经编译好的可执行文件。
使用当前工作路径下的配置文件 (bmq.conf) 启动
./bmq
使用指定的配置文件启动
./bmq -c /opt/bmq/1039.conf
注意，您可以使用多个配置文件在同一台服务器上启动多个 BitMQ 实例。但这些配置文件中设定的端口必须各不相同。
以后台模式启动
./bmq -d
首先找到 master 进程的 pid，例如
root@localhost:~# ps -ef | grep bmq
root 118675 1553 0 14:36 ? 00:00:00 bmq: master process (/opt/bmq/bmq.conf)
www-data 118676 118675 0 14:36 ? 00:00:00 bmq: worker process
然后执行
kill 118675
注意，此时 worker 进程并不会立刻退出，而是停止 accept 新连接。直到所有已建立的连接处理完毕并正常关闭后， worker 进程才会退出。这最长需要等待 keep-alive-timeout 的时间。
注意，直接对 worker 进程执行 kill 并不能关闭 BitMQ。master 进程会在 worker 进程退出后立即重新 fork 出一个 worker 进程。
首先找到 master 进程的 pid，然后执行
kill 118675
./bmq -d
执行该命令后会产生新的 master 进程和 worker 进程。旧进程会在所有已建立的连接处理完毕并正常关闭后退出。
首先找到 master 进程的 pid，然后执行
kill -USR2 118675 && kill 118675
注意：为了在不关闭程序的情况下更新二进制文件，您总是应当使用符号链接来启动 BitMQ。 注意：如果启用了数据持久化功能，请不要使用该方式重启程序，否则可能会造成数据丢失。
以下测试结果在虚拟机环境下取得。
HTTP 短连接 ( ab -n 500000 -c 10 http://127.0.0.1/ )：
Server Software: BitMQ
Server Hostname: 127.0.0.1
Server Port: 1039
Document Path: /
Document Length: 2308 bytes
Concurrency Level: 10
Time taken for tests: 17.853 seconds
Complete requests: 500000
Failed requests: 0
Total transferred: 1280000000 bytes
HTML transferred: 1154000000 bytes
Requests per second: 28007.07 [#/sec] (mean)
Time per request: 0.357 [ms] (mean)
Time per request: 0.036 [ms] (mean, across all concurrent requests)
Transfer rate: 70017.68 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.0 0 7
Processing: 0 0 0.2 0 11
Waiting: 0 0 0.2 0 11
Total: 0 0 0.2 0 11
Percentage of the requests served within a certain time (ms)
50% 0
66% 0
75% 0
80% 0
90% 0
95% 0
98% 1
99% 1
100% 11 (longest request)
Server Software: nginx/1.10.3
Server Hostname: 127.0.0.1
Server Port: 80
Document Path: /
Document Length: 2308 bytes
Concurrency Level: 10
Time taken for tests: 17.813 seconds
Complete requests: 500000
Failed requests: 0
Total transferred: 1275500000 bytes
HTML transferred: 1154000000 bytes
Requests per second: 28069.69 [#/sec] (mean)
Time per request: 0.356 [ms] (mean)
Time per request: 0.036 [ms] (mean, across all concurrent requests)
Transfer rate: 69927.52 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.1 0 8
Processing: 0 0 0.1 0 9
Waiting: 0 0 0.1 0 9
Total: 0 0 0.1 0 9
Percentage of the requests served within a certain time (ms)
50% 0
66% 0
75% 0
80% 0
90% 0
95% 0
98% 1
99% 1
100% 9 (longest request)
HTTP 长连接 ( ab -k -n 500000 -c 10 http://127.0.0.1/ )：
Server Software: BitMQ
Server Hostname: 127.0.0.1
Server Port: 1039
Document Path: /
Document Length: 2308 bytes
Concurrency Level: 10
Time taken for tests: 10.062 seconds
Complete requests: 500000
Failed requests: 0
Keep-Alive requests: 500000
Total transferred: 1282500000 bytes
HTML transferred: 1154000000 bytes
Requests per second: 49692.49 [#/sec] (mean)
Time per request: 0.201 [ms] (mean)
Time per request: 0.020 [ms] (mean, across all concurrent requests)
Transfer rate: 124473.86 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.0 0 1
Processing: 0 0 0.1 0 10
Waiting: 0 0 0.1 0 10
Total: 0 0 0.1 0 10
Percentage of the requests served within a certain time (ms)
50% 0
66% 0
75% 0
80% 0
90% 0
95% 0
98% 0
99% 0
100% 10 (longest request)
Server Software: nginx/1.10.3
Server Hostname: 127.0.0.1
Server Port: 80
Document Path: /
Document Length: 2308 bytes
Concurrency Level: 10
Time taken for tests: 19.471 seconds
Complete requests: 500000
Failed requests: 0
Keep-Alive requests: 495003
Total transferred: 1277975015 bytes
HTML transferred: 1154000000 bytes
Requests per second: 25679.27 [#/sec] (mean)
Time per request: 0.389 [ms] (mean)
Time per request: 0.039 [ms] (mean, across all concurrent requests)
Transfer rate: 64096.61 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.0 0 0
Processing: 0 0 1.3 0 28
Waiting: 0 0 1.3 0 28
Total: 0 0 1.3 0 28
Percentage of the requests served within a certain time (ms)
50% 0
66% 0
75% 0
80% 0
90% 0
95% 0
98% 1
99% 7
100% 28 (longest request)
注意：在以上测试中提供 nginx 的数据只是为硬件性能提供一个参考。两者并不具备可比较性。
消息发送 ( 关闭持久化与日志 )：
Time taken for tests: 3.21 seconds
Complete publish: 1000000
Failed publish: 0
Total transferred: 89.65 Mbytes
Message transferred: 86.78 Mbytes
Publish per second: 311817.91 [#/sec]
Time per publish: 0.00 [ms]
Transfer rate: 27.95 [Mbytes/sec]
$ redis-benchmark -q -t set -n 1000000
SET: 142267.75 requests per second
当开启日志或持久化功能时，消息吞吐量将主要受限于磁盘写入性能。
注意：在以上测试中提供 redis 的数据只是为硬件性能提供一个参考。两者并不具备可比较性。
BitMQ 遵循 BSD 许可证。
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