我需要为apache执行3种类型的性能测试。
我浏览了httperf手册，但我对各种选项感到困惑 比如，--rate， - num-call， - num-conn， - wsess
任何人都可以帮助我关注：
如何指定持续时间以及如何配置--rate， - num-conn和--num-calls，以便test执行指定的持续时间并且具有指定的请求数/秒？
答案 0 :(得分：14)
我会做这样的事情：
httperf --hog --server www.google.com --uri "/" --num-conn 30000 --num-call 1 \
--timeout 5 --rate 500 --port 80
httperf --hog --server www.google.com --uri "/" --num-conn 60000 --num-call 1 \
--timeout 5 --rate 1000 --port 80
httperf --hog --server www.google.com --uri "/" --num-conn 75000 --num-call 1 \
--timeout 5 --rate 1500 --port 80
NOTE1： --rate指定创建连接/会话的固定速率。
NOTE2： --num-conn指定要创建的连接总数。因此，如果您要创建 X req / sec，则需要执行 X * 60秒，以指定时间长度。
最后一点是使用httperf最难解决的问题。时间长度是速率和时间的函数。连接数，您没有指定它。
所以对你的例子来说：
500 req/sec @ 60 sec duration = 500 * 60 = 30,000 connections
1000 req/sec @ 60 sec duration = 1000 * 60 = 60,000 connections
1500 req/sec @ 60 sec duration = 1500 * 60 = 90,000 connections
有关httperf的更多详细信息，请参见手册页。
--rate=X Specifies the fixed rate at which connections or sessions are created.
Connections are created by default, sessions if option --wsess or
--wsesslog has been specified. In both cases a rate of 0 results
in connections or sessions being generated sequentially (a new
session/connection is initiated as soon as the previous one
completes). The default value for this option is 0.
--num-conn=N This option is meaningful for request-oriented workloads only. It
specifies the total number of connections to create. On each
connection, calls are issued as specified by options --num-calls
and --burst-length. A test stops as soon as the N connections have
either completed or failed. A connection is considered to have
failed if any activity on the connection fails to make forward
progress for more than the time specified by the timeout options
--timeout and --think-time‐out. The default value for this option is 1.