bench is a HTTP benchmark program that can fetch the same URL over and
over again, or fetch several URLs (coming in from stdin).
If you specify a URL on the command line, this URL will be fetch many
times (specify with -n, default: 10000) with several connections open in
parallen (specify with -c, default: 10).
You can specify a timeout (per request) in seconds with -t.
The -k switch activates keep-alive mode. In keep-alive mode, the TCP
connection is not closed between requests. You also have to specify how
many HTTP requests can go over one TCP connection with -K.
bench can also send one HTTP cookie per connection, as specified using a
cookie file. The cookie file is read line by line, and each request
gets the next line inserted into it. So each line should look something
If the end of the file is reached, bench restarts it at the beginning.