RE: [PHP-DEV] Re: Zend JIT Open Sourced
| From: | Zeev Suraski | Date: | Tue, 03 Mar 2015 13:05:13 +0000 |
| Subject: | RE: [PHP-DEV] Re: Zend JIT Open Sourced | ||
| References: | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 | Groups: | php.internals |
| Request: | Send a blank email to internals+get-84234@lists.php.net to get a copy of this message | ||
> So I do apologize to the person. I don't to the code.
I wanted to verify whether my gut was correct (minimal amount of output, and
stdout is in fact buffered - output shouldn't move the needle) and asked
Dmitry to rerun the C test on the same system, but this time with the output
code completely commented out:
real 0m0.011s (+- 0.01)
user 0m0.011s (+- 0.01)
sys 0m0.001s
Apologies to the code might be in order :)
The source of the JIT engine's edge is, as Dmitry and Andi said, the
CPU-specific optimizations that gcc -O2 doesn't generate, and therefore it
can actually be faster than a generic native executable in some (I would
guess not all that common) cases.
Zeev