<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; ">Hi Ethan,<DIV><BR class="khtml-block-placeholder"></DIV><DIV>We were investigating a customer's distributed setup which had latency figures around 8 seconds for their slave's active checks. After trawling through the mailing list, we found Trask's mail who discovered that the ocsp_command was being invoked serially - <A href="http://www.mail-archive.com/nagios-users@lists.sourceforge.net/msg04610.html">http://www.mail-archive.com/nagios-users@lists.sourceforge.net/msg04610.html</A>.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Looking through the Nagios code, it looks like nagios forks to run the service check and then returns the result for a separate process to evaluate the result. This process then runs the ocsp command.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Is there a reason the ocsp command is invoked serially? There is no mention of serial/parallelising of ocsp in the docs at <A href="http://nagios.sourceforge.net/docs/2_0/distributed.html">http://nagios.sourceforge.net/docs/2_0/distributed.html</A>.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Since the ocsp command looks like it is being invoked regardless of the plugin result, would it make sense to invoke ocsp in the service check fork?</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>If there is a good reason why ocsp is serialised, we'll publish our way of solving this latency problem: caching submissions within our ocsp script, before batch applying to send_nsca.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Ton<BR><DIV> <SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><DIV><BR class="khtml-block-placeholder"></DIV><DIV><A href="http://www.altinity.com">http://www.altinity.com</A></DIV><DIV>T: +44 (0)870 787 9243</DIV><DIV>F: +44 (0)845 280 1725</DIV><DIV>Skype: tonvoon</DIV></SPAN></SPAN></SPAN></SPAN></SPAN><BR class="Apple-interchange-newline"></SPAN> </DIV><BR></DIV></BODY></HTML>