Re: Why so slow in Windows?

What is the point ? run vista as server os ??? Sent from my iPhone On 10 feb. 2014, at 15:32, Umberto Salsi <salsi@icosaedro.it> wrote: > Hi, I'm testing a PHP program to be relased as open-source (PHPLint) which > performs a detailed analisis of PHP source programs: > > * CLI only, no WEB, > * no network connection involved, > * no data base, > * minimal disk activity required to load the source of the program > and the sources of the files to be parsed (less than 500 KB); > * the php.ini is very minimalistic, with no extension modules at all, same > exact php.ini file on Linux and Windows. > > Observed: > * CPU 100 % all the time. > * No disk activity. > * No net activity. > * Only php.exe running on Windows (php-cli on Linux). > > Now, the performances trying to validate something moderately complex > (itself): > > 1) Slackware Linux 12.1, Pentium 4, 32 bits, 1,6 GHz, > PHP-CLI 5.3.6-dev (quite old, but still working :-): > 26 s * 1.6 GHz = 42 Gcycles. > > 2) Windows Vista Business, Pentium E5300, 32 bits 2.6 GHz, > PHP-CLI 5.3.10-nts: > 132 s * 2.6 GHz = 343 Gcycles > > 3) Windows Vista Business, Pentium E5300, 32 bits 2.6 GHz, > (same PC of point 2 above) > PHP-CLI 5.5.9-nts (LAST RELEASE!): > 111 s * 2.6 GHz = 289 Gcycles > > > If performances can be measured as number of CPU cycles, PHP-CLI on Windows > is from 6 to 7 times slower than on Linux. > > Why is PHP Windows consuming 6 CPU cycle where Linux takes only 1? I'm missing > something? is there anything to tune to get better performances on Windows? > > I recall that the PHP source being executed is exactly the same, and the > php.ini is exactly the same, with no extensions enabled as the program only > needs strlen(), fopen() and things like that, nothing more. > > > Regards, > ___ > /_|_\ Umberto Salsi > \/_\/ www.icosaedro.it > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php >