ab - staging

 $ ab -n 1000 -c 5 http://baseurl/qa.php/2_4/gxml/tier1/2/0/0/cc/device_id
Where,

• -n 1000: ab will send 1000 number of requests to server 202.54.200.1 in order to perform for the benchmarking session
• -c 5 : 5 is concurrency number i.e. ab will send 5 number of multiple requests to perform at a time to server 202.54.200.1

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staging
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[Tue Apr 08 15:12:29 2014] [info] server seems busy, (you may need to increase StartServers, or Min/MaxSpareServers), spawning 32 children, there are 1 idle, and 205 total children

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HA-Proxy
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Apr  8 14:45:55 ip-10-11-144-86 rsyslogd-2177: imuxsock begins to drop messages from pid 19954 due to rate-limiting

I hope it helped. Feel free to comment...