2009/8/19 Noor <mlist-fc...@orientalsensation.com>: tldr;
> According to these findings, the best benchmark is when > MaxProcessCount is set to 8 (which is number of CPU's). Is this just > an accident? According to so many tips and pages I read on the No. In general, a thread-pool design, which is what mod_fcgid+PHP effectively emulates, will peak with the number of worker threads equal to the number of active CPUs. Note that this is in fact a very logical result, since PHP processing is CPU-bound. > Internet (and even its default value,) this variable should be around > 100. If you notice the last benchmark, when I put 64 in this variable, This might be true in the general case if PHP is used as mod_php and Apache handles not only PHP requests but also other, static content delivery (which make serving IO and network latency bound). In that case, and interpolated over real-life workload, increasing the number of server threads or processes to high number will be beneficial simply because the vast majority of them will sleep in a point in time. > I got 26 failed transactions. While when I put only 8 working > processes, I got no failures and the benchmark had the best times and > records! Overloading your CPUs can do that, yes. > And while you're at it, I'll through in another question: How does > eAccelerator/FastCGI manage the shared memory segments? According to Very, very badly, and for silly reasons too. APC and eAccelerator could be upgraded with code that would make them use truly shared memory, but for whatever reasons (possibly nobody has paid for the development), they don't. -- f+rEnSIBITAhITAhLR1nM9F4cIs5KJrhbcsVtUIt7K1MhWJy1A== ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Mod-fcgid-users mailing list Mod-fcgid-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mod-fcgid-users
