Re: [RFC] 64 bit platform improvements for string length and integer

On Sun, January 26, 2014 11:54, Anatol Belski wrote: > Hi Dmitry, > > > On Fri, January 24, 2014 09:36, Anatol Belski wrote: > >> Hi Dmitry, >> >> >> >> On Fri, January 24, 2014 08:32, Dmitry Stogov wrote: >> >> >>> Unfortunately, my benchmarks on Linux show that 64-bit PHP builds are >>> always a bit slower on real-life applications. It's because 64-bit >>> PHP >>> uses more memory and as result causes more CPU cache misses. >>> >> i suppose the perf test on windows to be done today. >> > > here's the perf test result I got from Steve. All the numbers are test > scores, the meaning is the same as one could already have seen in the > other perf tests of this art > http://windows.php.net/downloads/snaps/ostc/pftt/perf/ . Below > are also > the Steve's notes about what he's seen during tesing. > > Regards, Anatol > > > ============= FORWARDED ============= > > > PHP Version Wordpress DrupalJoomla > > > str_size_and_int64-x86 NoCache: 68 NoCache: 70 > NoCache: 53 > Cache: 284 Cache: 393 > Cache: 127 > > > php-5.5.8-nts-Win32-VC11-x86 NoCache: 67 NoCache: 69 > NoCache: 53 > Cache: 280 Cache: 390 > Cache: 125 > > > str_size_and_int64-x64 NoCache: 58 NoCache: 64 > NoCache: 50 > Cache: 313* Cache: 348* > Cache: 100* > > > php-5.5.8-nts-Win32-VC11-x64 NoCache: 59 NoCache: 65 > NoCache: 51 > Cache: 270* Cache: ** > Cache: ** > > > • The x86 build of the str_size_and_int64 is consistent with the x86 > build of 5.5.8. • The x64 build of the str_size_and_int64 branch was a bit > slower than the x86 build of any version, as expected. • * I had some > issues with the x64 versions of 5.5.8 and str_size_and_int64 when testing > with opcache enabled. Typically the scripts will test each application > three times with 16/32/64 virtual clients. For the str_size_and_int64 > build I could get 1 or 2 out of the three runs to produce good results, > and then the other runs would just return 500 errors. • The opcache results > I could get from the x64 build of str_size_and_int64 > were pretty good, and I even saw better perf with Wordpress for some > reason. • The 5.5.8 x64 build was even worse. With the opcache scenario, > I was > not able to get decent results for Drupal and Joomla after several > attempts. > > The results look promising and overall very consistent with standard PHP. > However, it’s clear we need to resolve these issues with Opcache and the > x64 builds on Windows before 5.6.0-final. Otherwise x64 builds on > Windows > will be a non-starter for production use. > > ============= END FORWARDED ============= > Now with hopefully better looking table. PHP Version Wordpress Drupal Joomla str_size_and_int64-x86 NoCache: 68 NoCache: 70 NoCache: 53 Cache: 284 Cache: 393 Cache: 127 php-5.5.8-nts-Win32-VC11-x86 NoCache: 67 NoCache: 69 NoCache: 53 Cache: 280 Cache: 390 Cache: 125 str_size_and_int64-x64 NoCache: 58 NoCache: 64 NoCache: 50 Cache: 313* Cache: 348* Cache: 100* php-5.5.8-nts-Win32-VC11-x64 NoCache: 59 NoCache: 65 NoCache: 51 Cache: 270* Cache: ** Cache: ** Cheers, Anatol