Am 02.05.2017 um 20:53 schrieb Nikita Popov:
These results are very unlikely. I'm 95% sure your benchmark is
broken. My first guess would be that you're benchmarking PHP +
JIT against PHP without opcache. Please share the relevant
(opcache-related) portion of the php.inis you used
no they are not - since i build RPM packages and even the whole
spec-file is unchanged, only the tarball changed and the build is
highly optimized i can assure you for 100% that i compare PHP
7.1.5RC1 with https://github.com/zendtech/php-src
<https://github.com/zendtech/php-src> downloaded today
maybe the PGO-profiling running autotests and fuzzy-calls on the
whole application as well as 2000 cms-requests combined with the
compiler flags improves the JIT itself
without opcache the results for 7.1.5 are *dramatically* slower
and i repeated the test upgrade/downgrade packages and run "ab"
multiple times on that machine - attached the "php.spec" which is
used for the build
in just downloaded the zip from https://github.com/zendtech/php-src
<https://github.com/zendtech/php-src>, renamed it to "php-7.2.0",
made a tar.xz archive, changed the version on teh frist line in the
spec file and fired the build/profiling - nothing else changed
>
You have xdebug enabled...
loaded, but not enabled
xdebug.default_enable = 0
xdebug.profiler_enable = 0
xdebug.profiler_enable_trigger = 1
7.1.5: Requests per second: 136.46
7.1.5 opcache: Requests per second: 316.77
7.2.0 JIT PGO: Requests per second: 925.96
7.2.0 JIT NON-PGO: Requests per second: 849.99
around 8% are the difference with or without PGO, no idea how much
strict-types and a 100% typehinted codebase makes a difference to the
JIT operations
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