Search Again: Re: QDNS3.01 crashes under load From: Sigurdur Ragnarsson Date: Friday, July 6, 2001 Time: 3:57:40 am At 9:39 -0400 5.7.2001, andrew wrote: >QDNS 3.0.1 >MacOS 8.6 >G3/233 > >I have a W2KAdvServer that has its outgoing connections for SMTP set to 100 >and it's primary DNS set to the QDNS server. If I send to a large mailing >list (several thousand names) it seems to crash the QDNS server with too >many queries after a short period time. If I reduce the connections to 32 it >seems to run OK, at least it has up to now <fingers crossed>. > >Is this a function of OT not supporting enough connections and the stack is >crashing? Or is it a QDNS problem? If anyone else has experienced this >problem, how have they gotten around it? When testing QuickDNS 3.0 we were occasionally able to crash the application if it was under extreme load for a long period of time on a low-end server.. This caused outstanding queries to pile up and eventually, the server gave up and crashed. To address this, we added a parameter that controlled how many outstanding queries the server should handle before rejecting new queries. There is no UI for this, but the value of maximum outstanding queries can be changed by opening QuickDNS Pro Server in ResEdit and changing the value of STR# 130. The default value for maximum outstanding queries is 1000. You might want to lower this value to 500 and see if it makes any difference. -- Sigurdur Ragnarsson Men & Mice siggi@menandmice.com http://www.menandmice.com

Messages In This Thread: QDNS3.01 crashes under load by andrew on Jul 5, 2001 at 6:40:35 am Re: QDNS3.01 crashes under load by Mia''s Virtual Post Office on Jul 5, 2001 at 12:18:38 pm Re: QDNS3.01 crashes under load by Sigurdur Ragnarsson on Jul 6, 2001 at 3:57:40 am Re: QDNS3.01 crashes under load by Mia''s Virtual Post Office on Jul 6, 2001 at 9:48:49 am