> > On Tue, Nov 26, 2013 at 8:42 PM, Ricardo Pedroso <[email protected]>wrote: > >> How may cores do you have? >> Are all the cores being used when you run the tests? >> What webserver are you testing against? >> >> > I have 4 cores, 16 GB RAM running Apache. But I think, this is irrelevant. > Apache easily serves 1000 static file requests (which are not processed > through web2y) with 100 concurrent connections on the same machine, with > the largest response time being <133 ms. > > Every thing is relevant.
Assuming that you are using an OS with sendfile support: Webservers are optimized to serve static content, you cannot expect to go near that with dynamic content. When doing static files serving, and in your case always the same file, the kernel will cache it and there is no disk access, also to serve the file you will not have the typical system calls in the user space (open/read/write) you will have only one system call "sendfile" that works in the kernel space. from https://httpd.apache.org/docs/2.2/misc/perf-tuning.html: If your OS supports a sendfile(2) system call, make sure you install the release and/or patches needed to enable it. (With Linux, for example, this means using Linux 2.4 or later. For early releases of Solaris 8, you may need to apply a patch.) On systems where it is available, sendfile enables Apache 2 to deliver static content faster and with lower CPU utilization. What I can suggest right know, and assuming that you have the database and webserver in the same machine, is to put the database in another machine. If you are doing the ab tests in the same machine, do it in another one. Ricardo -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
