Hi Ralf, First, I advise that ZF 1.5.0PR probably should not be used in production, mission-critical applications, since it is a "preview release" or unstable distribution, including components from the incubator in various stages of completion. Of course, the 1.5.0RC1 should be more stable, and the 1.5.0GA release should be quite solid.
As to your performance problems, I suspect that you could be having trouble with Zend_Loader. Please see the following JIRA issue if you also suspect the same could be true: http://framework.zend.com/issues/browse/ZF-2463 In short, Zend_Loader had been using the "@" error suppression operator for its include[_once] directives. This caused any errors that occur by including a file to be suppressed. This is particularly bad for developers experiencing fatal errors, but it also poses problems for people who want to be aware of such errors, yet they had been suppressed by Zend_Loader. So, to solve the problem I removed the error suppression operators, and wrapped error trapping code around the include[_once] directives. This unconditional error handling no doubt contributes to some degradation in performance, but I do not have concrete data to say how much degradation one should expect. Since 1.0.3 apparently had no error suppression, the solution for ZF-2463 may be improved, and I intend to do so prior to the ZF 1.5.0 RC1 release. With any luck I should be able to do this today. Finally, I would recommend that Zend_Loader be eschewed, in favor of using require_once, whenever possible. If there are any framework components using Zend_Loader, where require_once would work nicely instead, please let us know about it. Thanks for the report! Best regards, Darby Ralf Eggert wrote: > Hi, > > two days ago I upgraded our live server with ZF 1.5.0PR which caused a > serious performance issue. The whole site slowed down immediately. > > First I did not know what the real problem was because at nearly the > same time a content grabber started to run his bots to grab our content. > But after blocking his ips the performance was still bad compared to the > time before upgrading to ZF 1.5.0PR. > > So today I switched back to ZF 1.0.3 and the performance was up again. > With ZF 1.0.3 the load average is almost all the time lower than 1. With > ZF 1.5.0PR is was almost all the time between 4 and 6. I was not able to > identify the bottleneck because my first priority was to get the site > back to normal. > > Hay anybody else upgrade an live server with 1.5.0PR and encountered > similar problems? Has anybody any idea what could have caused these > problems? > > Best Regards, > > Ralf > >
