<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; ">Sysit,<DIV><BR class="khtml-block-placeholder"></DIV><DIV>We had this problem (for SNMPtrap processing), which we've documented here: <A href="http://altinity.blogs.com/dotorg/2006/05/immediate_perfo.html">http://altinity.blogs.com/dotorg/2006/05/immediate_perfo.html</A></DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>The short answer is that you need to make sure the host check command executes as quick as possible because it holds up other processing.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>This patch may help you, but you have to be careful: <A href="http://altinity.blogs.com/dotorg/2006/05/reducing_host_c.html">http://altinity.blogs.com/dotorg/2006/05/reducing_host_c.html</A></DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Ton</DIV><DIV><BR><DIV><DIV>On 26 May 2006, at 03:13, SYSIT wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"><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 class="Section1" defanghtml_style="layout-grid:15.6pt"><P class="MsoNormal"><FONT size="1" color="navy" face="Arial"><DEFANGHTML_SPAN lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy; color: rgb(0, 0, 128); text-align: justify; "><SPAN class="Apple-style-span" style="color: rgb(0, 0, 128); font-family: Arial; text-align: justify; ">I have used nfs (on a netapp device) to submit check result from slave server to central server.</SPAN><O:P style="color: rgb(0, 0, 128); font-family: Arial; text-align: justify; "></O:P></DEFANGHTML_SPAN></FONT></P><P class="MsoNormal"><FONT size="1" color="navy" face="Arial"><DEFANGHTML_SPAN lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy; color: rgb(0, 0, 128); text-align: justify; "><SPAN class="Apple-style-span" style="color: rgb(0, 0, 128); font-family: Arial; text-align: justify; ">But now another problem happed: central server can’t deal with so many passive check result.</SPAN><O:P style="color: rgb(0, 0, 128); font-family: Arial; text-align: justify; "></O:P></DEFANGHTML_SPAN></FONT></P><P class="MsoNormal"><FONT size="1" color="navy" face="Arial"><DEFANGHTML_SPAN lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy; color: rgb(0, 0, 128); text-align: justify; "><O:P style="color: rgb(0, 0, 128); font-family: Arial; text-align: justify; "><SPAN class="Apple-style-span" style="color: rgb(0, 0, 128); font-family: Arial; text-align: justify; "> </SPAN></O:P></DEFANGHTML_SPAN></FONT></P><P class="MsoNormal"><FONT size="1" color="navy" face="Arial"><DEFANGHTML_SPAN lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy; color: rgb(0, 0, 128); text-align: justify; "><SPAN class="Apple-style-span" style="color: rgb(0, 0, 128); font-family: Arial; text-align: justify; ">It’s about 150 check result per second submit into nagios.cmd.</SPAN><O:P style="color: rgb(0, 0, 128); font-family: Arial; text-align: justify; "></O:P></DEFANGHTML_SPAN></FONT></P><P class="MsoNormal"><FONT size="1" color="navy" face="Arial"><DEFANGHTML_SPAN lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy; color: rgb(0, 0, 128); text-align: justify; "><SPAN class="Apple-style-span" style="color: rgb(0, 0, 128); font-family: Arial; text-align: justify; ">On central server , I found Nagios use more process to process check result ,</SPAN><O:P style="color: rgb(0, 0, 128); font-family: Arial; text-align: justify; "></O:P></DEFANGHTML_SPAN></FONT></P><P class="MsoNormal"><FONT size="1" color="navy" face="Arial"><DEFANGHTML_SPAN lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy; color: rgb(0, 0, 128); text-align: justify; "><SPAN class="Apple-style-span" style="color: rgb(0, 0, 128); font-family: Arial; text-align: justify; "> it’s about add 2 nagios process one minutes.</SPAN><O:P style="color: rgb(0, 0, 128); font-family: Arial; text-align: justify; "></O:P></DEFANGHTML_SPAN></FONT></P><P class="MsoNormal"><FONT size="1" color="navy" face="Arial"><DEFANGHTML_SPAN lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy; color: rgb(0, 0, 128); text-align: justify; "><SPAN class="Apple-style-span" style="color: rgb(0, 0, 128); font-family: Arial; text-align: justify; ">So 4 hours later, my nagios server have 1k nagios process, and system crashed.</SPAN><O:P style="color: rgb(0, 0, 128); font-family: Arial; text-align: justify; "></O:P></DEFANGHTML_SPAN></FONT></P></DIV></SPAN></BLOCKQUOTE></DIV><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><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>