On Sun, August 16, 2009 11:24 am, Paul Biggar wrote:
> Hi Stefan,
>
> On Sat, Aug 15, 2009 at 8:52 PM, Stefan Marr
> wrote:
>> Sometimes, it would be really interesting to know
>> where some of the used ideas are coming from
>> and what the reasoning was. I tend to think that its rather unlikely
>>
Lothar Scholz wrote:
> Hello Stanislav,
>
> Monday, August 17, 2009, 9:46:19 AM, you wrote:
>
> SM> Hi!
>
>>> A buggy implementation should solve as reference? Damn'd fucking
>>> college boys. This was an acceptable development method for PHP3.
>
> SM> So, you came to PHP developers list to cal
Pierre Joye wrote:
On Mon, Aug 17, 2009 at 7:40 AM, Lothar Scholz wrote:
Hello Stanislav,
Monday, August 17, 2009, 9:46:19 AM, you wrote:
SM> Hi!
A buggy implementation should solve as reference? Damn'd fucking
college boys. This was an acceptable development method for PHP3.
SM> So, you ca
On Mon, Aug 17, 2009 at 12:40:54PM +0700, Lothar Scholz wrote:
> Hello Stanislav,
>
> Monday, August 17, 2009, 9:46:19 AM, you wrote:
>
> SM> Hi!
>
> >> A buggy implementation should solve as reference? Damn'd fucking
> >> college boys. This was an acceptable development method for PHP3.
Langua
Lothar Scholz schrieb:
> Did you ever tried to compile the original PHP with different
> compilers, for example from intel or sun studio?
I tried ICC a couple of years ago, the results are at
http://sebastian-bergmann.de/archives/634-PHP-GCC-ICC-Benchmark.html
--
Sebastian Bergmann
Hi!
compilers, for example from intel or sun studio? Did you test or have
you ever heard of someone who tested the influence of the profiling
feedback that modern C compilers offer? (Well don't ask me - it's
We tried it with Visual PGO and there's some small improvement (around
10% IIRC) but
Hi!
So, the basic design of the Zend Engine is a
a stack-based interpreter for a fixed length
instruction set (76byte on a 32bit architecture),
Not exactly stack-based, it's more register-based. Number of registers
is not limited, even though most of them aren't used simultaneously.
Instru
Hi!
A buggy implementation should solve as reference? Damn'd fucking
college boys. This was an acceptable development method for PHP3.
So, you came to PHP developers list to call people names and whine about
how the thing mostly done by volunteers and used by millions sucks? Good
job!
--
St
I think they are pulled out of thin air. More specifically, I think
there are optimizations heaped upon optimizations heaped upon an
initial implementation. It seems that each new release of PHP has a
small speed improvement based on some optimization performed, but that
there has been no major re
Paul Biggar schrieb:
> There was a POPL paper this year on Copy-on-write in PHP
http://doi.acm.org/10.1145/1480881.1480908
> There was also a PLDI paper on the performance effects of PHP's
> memory allocator
http://doi.acm.org/10.1145/1542476.1542520
--
Sebastian Bergmann
Hi Stefan,
On Sat, Aug 15, 2009 at 8:52 PM, Stefan Marr wrote:
> Sometimes, it would be really interesting to know
> where some of the used ideas are coming from
> and what the reasoning was. I tend to think that its rather unlikely that
> they
> are pulled out of thin air. Some parts of the model
Hi Paul:
To start with, the best reference about the Zend engine that I know of
is a presentation by Andy Wharmby at IBM:
www.zapt.info/PHPOpcodes_Sep2008.odp. It should answer a lot of your
questions.
Thanks a lot, was not aware of that one. And, well it helps to read
and understand
the code
Hi Stefan,
On Thu, Aug 13, 2009 at 1:42 PM, Stefan Marr wrote:
> Hello internals:
>
> I had a look at the Zend Engine to understand some
> details about its internal design with respect
> to its opcodes and machine model.
To start with, the best reference about the Zend engine that I know of
is
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