Hello Dmitry,
if you mean the hash stuff you changed then you did quite some mistakes.
Because the normal apply functions don't respect the ZEND_HASH_* consts as
i mailed last week.
marcus
Monday, March 13, 2006, 1:12:01 PM, you wrote:
> Hi Rasmus,
> I made two improvements in 5.1 and run the same bechmarks on Intel Pentium M
> 1.5GHz 2M cache.
> top/top5/top10
>
> php-5.1 740 550 430 req/sec
> php-4.4 680 440 290 req/sec
> May be the problem is AMD chip? :)
> Thanks. Dmitry.
>> -----Original Message-----
>> From: Rasmus Lerdorf [mailto:[email protected]]
>> Sent: Monday, March 13, 2006 7:34 AM
>> To: internals
>> Subject: [PHP-DEV] Calling performance geeks
>>
>>
>> We have a bit of a performance disconnect between 4.4 and 5.1
>> still. I
>> was doing some benchmarking today just as a sanity check on some APC
>> work I have been doing lately and came up with this:
>>
>> http://lerdorf.com/php/bm.html
>>
>> You can ignore the apc/eaccelerator stuff. Those numbers are not
>> surprising. The surprising number to me is how much faster
>> 4.4 still is.
>>
>> The graph labels are slightly off. The 0, 5 and 10 includes should
>> really be 1, 6 and 11. The actual benchmark code is here:
>>
>> http://www.php.net/~rasmus/bm.tar.gz
>>
>> Tested on a Linux 2.6 Ubuntu box on an AMD chip (syscalls are cheap
>> there) with current PHP_4_4 and PHP_5_1 checkouts. Was also testing
>> 5.1.2 to see the effect of getting rid of that uncached realpath call.
>>
>> As far as I can tell auto_globals_jit isn't working at all, but I
>> eliminated that by doing variables_order = GP for these benchmarks.
>> Even so, the request_startup is significantly more expensive in 5.1.
>>
>> Here are callgrind dumps for each. Load them up with kcachegrind and
>> browse around:
>>
>> PHP 4.4 http://www.php.net/~rasmus/callgrind.out.1528.gz
>> PHP 5.1 http://www.php.net/~rasmus/callgrind.out.1488.gz
>>
>> Each of these is 1000 requests against the top.php and
>> 4top.php scripts.
>> from bm.tar.gz. If you start at the
>>
>> The script is trivial and looks like this:
>>
>> <html>
>> <?php
>> $base_dir = '/var/www/bm/';
>> include $base_dir . 'config.inc';
>>
>> function top_func($arg) {
>> $b = $arg.$arg;
>> echo $b;
>> }
>> class top_class {
>> private $prop;
>> function __construct($arg) {
>> $this->prop = $arg;
>> }
>> function getProp() {
>> return $this->prop;
>> }
>> function setProp($arg) {
>> $this->prop = strtolower($arg);
>> }
>> }
>>
>> top_func('foo');
>> $a = new top_class('bar');
>> echo $a->getProp();
>> $a->setProp("AbCdEfG");
>> echo $a->getProp();
>> echo <<<EOB
>> The database is {$config['db']}
>> and the user is {$config['db_user']}
>>
>> EOB;
>> ?>
>> </html>
>>
>> and config.inc is:
>>
>> <?php
>> $config = array(
>> 'db' => 'mysql',
>> 'db_user' => 'www',
>> 'db_pwd' => 'foobar',
>> 'config1' => 123,
>> 'config2' => 456,
>> 'config3' => 789,
>> 'sub1' => array(1,2,3,4,5,6,7,8,9,10),
>> 'sub2' =>
>>
>> array("abc","def","ghi","jkl","mno","pqr","stu","vwx","yz")
>> );
>> ?>
>>
>> 4top.php is identical except for the class definition being
>> PHP 4-style
>> instead. As in no private and a PHP 4 constructor. Otherwise it is
>> identical.
>>
>> I have some ideas for things we can speed up in 5.1. Like,
>> for example,
>> we should add the ap_add_common_vars() and ap_add_cgi_vars()
>> to the jit
>> mechanism. There isn't much point filling these in unless the script
>> tries to get them. the ap_add_common_vars() call is
>> extremely expensive
>> since it does a qsort with a comparison function that uses
>> strcasecmp.
>> Of course, this same optimization can be done in 4.4.
>>
>> If you know your way around kcachegrind, load up the two
>> callgrind files
>> and see what stands out for you. As far as I can tell, while
>> we can do
>> some tricks to speed up various helper bits, the slowdown is
>> coming from
>> the executor trashing its cache lines.
>>
>> -Rasmus
>>
>> --
>> PHP Internals - PHP Runtime Development Mailing List
>> To unsubscribe, visit: http://www.php.net/unsub.php
>>
>>
>>
Best regards,
Marcus