Mark Williams
30075b74c9
If there were multiple processes (or threads) trying to write to the repo, we were spending a lot of time in raw_spin_lock, resulting in almost no forward progress. The new test case runs in about 8 seconds on my dev server, with a debug build, but didnt complete in 20 minutes when using the current release build of hhvm. I also removed the 20 thread limit on the test runner, which drops the time for SlowJit from about 1:45 to 1:30, and should no longer cause repo-contention issues.
HipHop VM for PHP
HipHop VM (HHVM) is a new open-source virtual machine designed for executing programs written in PHP. HHVM uses a just-in-time compilation approach to achieve superior performance while maintaining the flexibility that PHP developers are accustomed to. HipHop VM (and before it HPHPc) has realized >5x increase in throughput for Facebook compared with Zend PHP 5.2.
Required Packages, and Installing and Running HipHop VM
The latest information is available on the wiki.
Contributing to HipHop VM
HipHop VM is licensed under the PHP and Zend licenses except as otherwise noted.
Before changes can be accepted a Contributors Licensing Agreement must be signed and returned.