On 9/13/07, Yan Meng <[EMAIL PROTECTED]> wrote: > more info > > just 1 server > > webserver + appserver + dbserver > > On 9/14/07, Yan Meng <[EMAIL PROTECTED] > wrote:
> > We use APACHE + mod_proxy_balancer + mongrel to deploy our application, it > workd super in the past few monthes. > > > > However, just from last week, at high traffic hour (about 40,000 request > per hour), our site is very very slow, it usually took more than 10 seconds > to get a page or simply return timeout error. > > > > I telnet to the server and found that when I visit directly to one mongrel > instance, it can return shortly, however when I visit from apache interface, > it hang. > > > > I also cannot visit (timeout) the mod_proxy_balancer's frontend to see the > balance-manager. I've been letting this one bounce around in my head for a while. I think that sentence there, right at the end of what I quoted, is an important clue. If you can't get to the mod_proxy_balancer's front end, then Apache is failing to field the request in the first place. Start there. Look at your Apache config. Look at your Apache. Are you using an Apache that has things built into it, or loaded, which are not needed? If so, rebuild without those items, or comment them out of your configuration. Look at your allowances for keep alive, and for MaxClients and related load handling config items. After you look at that, then come back and look at mongrel and your application. Do you know how fast your app actions are? Do you have some actions that are very slow? Are you facing a situation where some bottleneck is preventing your one server from handling requests as fast as they are coming in? 40k requests/hour on your single server may or may not be a problem. It all depends on the application. That's only about 11 requests/second, which isn't really a lot. That's about all that can be said without more information and analysis. Kirk Haines _______________________________________________ Mongrel-users mailing list Mongrel-users@rubyforge.org http://rubyforge.org/mailman/listinfo/mongrel-users
