If you're running the nsca daemon in xinetd you can up the number of threads and connections. I had a similar issue as I started adding services and eventually fixed it by adding these lines to /etc/xinetd.d/nsca<br><br>
instances = UNLIMITED<br> per_source = UNLIMITED<br> cps = 5000 0<br><br><br><br><div class="gmail_quote">On Tue, May 4, 2010 at 2:53 PM, Ford, Andy <span dir="ltr"><<a href="mailto:andrew.ford@wachovia.com">andrew.ford@wachovia.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;">
<div link="blue" vlink="purple" lang="EN-US">
<div>
<p class="MsoNormal">I’m having a problem with my nsca daemon (v. 2.7.2) in
a distributed monitoring setup (nagios 3.2.1 on SLES 10.2) and I was wondering
if anyone else has seen something like this. </p>
<p class="MsoNormal">nsca seems to be dropping incoming passives in an
inconsistent way, sometimes keeping up, other times seeming to skip 1,2, or even
sometimes 3 incoming passive checks. </p>
<p class="MsoNormal">I’ve checked the collector, and it seems to be sending
the nsca packets very solidly on the 5 minute normal_check_interval.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">These are the times that nagios logged a “PASSIVE
SERVICE CHECK” for a typical service on a single host since last midnight:</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">00:03:55</p>
<p class="MsoNormal">00:08:56</p>
<p class="MsoNormal">00:13:50</p>
<p class="MsoNormal">00:18:51</p>
<p class="MsoNormal">00:28:53</p>
<p class="MsoNormal">00:38:55</p>
<p class="MsoNormal">00:43:56</p>
<p class="MsoNormal">00:48:50</p>
<p class="MsoNormal">00:53:51</p>
<p class="MsoNormal">00:58:52</p>
<p class="MsoNormal">01:08:54</p>
<p class="MsoNormal">01:13:55</p>
<p class="MsoNormal">01:18:49</p>
<p class="MsoNormal">01:23:50</p>
<p class="MsoNormal">01:38:53</p>
<p class="MsoNormal">01:43:54</p>
<p class="MsoNormal">01:48:55</p>
<p class="MsoNormal">01:53:49</p>
<p class="MsoNormal">01:58:50</p>
<p class="MsoNormal">02:18:54</p>
<p class="MsoNormal">02:23:55</p>
<p class="MsoNormal">02:28:49</p>
<p class="MsoNormal">02:33:50</p>
<p class="MsoNormal">02:53:47</p>
<p class="MsoNormal">02:58:55</p>
<p class="MsoNormal">03:03:56</p>
<p class="MsoNormal">03:08:50</p>
<p class="MsoNormal">03:23:46</p>
<p class="MsoNormal">03:28:54</p>
<p class="MsoNormal">03:33:55</p>
<p class="MsoNormal">03:38:56</p>
<p class="MsoNormal">03:43:50</p>
<p class="MsoNormal">03:48:51</p>
<p class="MsoNormal">03:58:46</p>
<p class="MsoNormal">04:03:54</p>
<p class="MsoNormal">04:08:55</p>
<p class="MsoNormal">04:13:56</p>
<p class="MsoNormal">04:18:50</p>
<p class="MsoNormal">04:38:54</p>
<p class="MsoNormal">04:43:55</p>
<p class="MsoNormal">04:48:56</p>
<p class="MsoNormal">04:53:50</p>
<p class="MsoNormal">04:58:51</p>
<p class="MsoNormal">05:03:52</p>
<p class="MsoNormal">05:13:54</p>
<p class="MsoNormal">05:18:55</p>
<p class="MsoNormal">05:23:56</p>
<p class="MsoNormal">05:28:50</p>
<p class="MsoNormal">05:48:54</p>
<p class="MsoNormal">05:53:55</p>
<p class="MsoNormal">05:58:49</p>
<p class="MsoNormal">06:03:50</p>
<p class="MsoNormal">06:23:54</p>
<p class="MsoNormal">06:28:48</p>
<p class="MsoNormal">06:33:49</p>
<p class="MsoNormal">06:38:50</p>
<p class="MsoNormal">07:03:55</p>
<p class="MsoNormal">07:08:49</p>
<p class="MsoNormal">07:13:50</p>
<p class="MsoNormal">07:33:54</p>
<p class="MsoNormal">07:38:55</p>
<p class="MsoNormal">07:43:56</p>
<p class="MsoNormal">07:48:50</p>
<p class="MsoNormal">08:03:46</p>
<p class="MsoNormal">08:08:54</p>
<p class="MsoNormal">08:13:55</p>
<p class="MsoNormal">08:18:49</p>
<p class="MsoNormal">08:23:50</p>
<p class="MsoNormal">08:33:52</p>
<p class="MsoNormal">08:43:54</p>
<p class="MsoNormal">08:48:55</p>
<p class="MsoNormal">08:53:56</p>
<p class="MsoNormal">08:58:50</p>
<p class="MsoNormal">09:08:45</p>
<p class="MsoNormal">09:18:54</p>
<p class="MsoNormal">09:23:55</p>
<p class="MsoNormal">09:28:49</p>
<p class="MsoNormal">09:33:50</p>
<p class="MsoNormal">09:38:44</p>
<p class="MsoNormal">09:53:54</p>
<p class="MsoNormal">09:58:55</p>
<p class="MsoNormal">10:03:49</p>
<p class="MsoNormal">10:08:50</p>
<p class="MsoNormal">10:28:54</p>
<p class="MsoNormal">10:33:55</p>
<p class="MsoNormal">10:38:49</p>
<p class="MsoNormal">10:43:50</p>
<p class="MsoNormal">11:08:55</p>
<p class="MsoNormal">11:13:56</p>
<p class="MsoNormal">11:18:50</p>
<p class="MsoNormal">11:33:46</p>
<p class="MsoNormal">11:38:54</p>
<p class="MsoNormal">11:43:55</p>
<p class="MsoNormal">11:48:56</p>
<p class="MsoNormal">11:53:50</p>
<p class="MsoNormal">12:13:54</p>
<p class="MsoNormal">12:18:55</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Andy Ford</p>
<p class="MsoNormal">Network Security Compliance & Automation, Wells Fargo
& Co.</p>
<p class="MsoNormal">314-600-7025</p>
<p class="MsoNormal"><a href="mailto:andrew.ford@wachovia.com" target="_blank">andrew.ford@wachovia.com</a></p>
<p class="MsoNormal"> </p>
</div>
</div>
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