On Mon, 19 Aug 2002, Aaron Bannert wrote: > On Tue, Aug 20, 2002 at 11:07:37AM +0900, Tsuyoshi SASAMOTO wrote: > > On Solaris, this macro definition is required to build successfully: > > -D_XOPEN_SOURCE=500 -D__EXTENSIONS__ > > > > By the way, with the perchild MPM, httpd performance is > > "T2 (alternate) thread lib < T1 (default) thread lib". > > > > >http://groups.google.com/groups?[EMAIL PROTECTED] > > > > By contrast, with the worker MPM, "T2 thread lib > T1 thread lib" > > (But the difference is smaller than the perchild MPM). > > > > With the perchild MPM and the T2 thread lib, mutex contention > > may cause performance penalty, I guess... > > Having just first seen your original post a few seconds ago, I > wanted to point out a couple problems with the test you performed. > The first problem is you had the client and the server on the > same machine, which means that they were fighting each other > for timeslices, which is bad. The second problem is AB isn't > the greatest tool for measuring performance and concurrency. It > is useful for a quick test, and for single-threaded performance, > but terrible at testing the various threaded MPMs.
The third problem with this measurement, is that the Perchild MPM is in no way ready to be benchmarked. :-) This MPM just barely works, let alone optimized. Ryan _______________________________________________________________________________ Ryan Bloom [EMAIL PROTECTED] 550 Jean St Oakland CA 94610 -------------------------------------------------------------------------------
