<div dir="ltr">Amos,<br><br>What are you trying to count? I hope I understood you correctly, you want to know how many HTTP requests are being handled, against those that couldn't be handled due to lack of connections.<br>
<br>netstat is a very bad counting devices, unless you are counting packets.<br><br>If you want to count "requests" I would count incoming connection requests (SYN) vs apache log of requests<br><br>The incoming connections should be counted using tcpdump or similar<br>
<br>while apache log should be easily achievable by grep<br><br><div class="gmail_quote">On Tue, Jun 9, 2009 at 1:44 PM, Amos Shapira <span dir="ltr"><<a href="mailto:amos.shapira@gmail.com">amos.shapira@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hello,<br>
<br>
We are running a cluster of web servers of various functions on top of<br>
CentOS 5, and would like to know whether and how many requests we<br>
might be dropping because of insufficient provisioning. The cluster<br>
could be hit by a a few millions requests per day soon and we'd like<br>
the stats to be there both now (in case we miss something obvious) and<br>
when the crowd comes charging.<br>
<br>
Googl'ing around for explanations of "netstat -s" and the files under<br>
/proc/net didn't come up with anything which looks like the definite<br>
answer, except maybe "packets pruned from receive queue because of<br>
socket buffer overrun", but I'm not sure what it counts.<br>
<br>
Does anyone know how to get the stats I want?<br>
<br>
Thanks,<br>
<br>
--Amos<br>
<br>
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