rocksdb/README.fb

* How to compile using fbcode and jemalloc
  source fbcode.sh
  make 

* Compiling for CPUs with SSE4 support

  make OPT='-O2 -DNDEBUG -msse4'
  
  This makes CRC computation much faster, but
  binaries won't run on CPUs that don't support it.
Ability to switch to gcc 4.1.6 and also use jemalloc. Thanks for Chip for large amounts of help. Summary: Task ID: # Blame Rev: Test Plan: Revert Plan: Reviewers: chip Reviewed By: chip CC: sc, adsharma Differential Revision: https://reviews.facebook.net/D3225 2012-05-15 03:17:06 +02:00			`* How to compile using fbcode and jemalloc`
			`source fbcode.sh`
			`make`
SSE4 optimization Summary: This speeds up CRC computation significantly on hardware that supports it. Enabled via -msse4. Note: the binary won't be usable on older CPUs that don't support the instruction. Test Plan: crc32c_test Reviewers: dhruba Reviewed By: dhruba Differential Revision: https://reviews.facebook.net/D3201 2012-05-04 03:10:17 +02:00
			`* Compiling for CPUs with SSE4 support`

			`make OPT='-O2 -DNDEBUG -msse4'`

			`This makes CRC computation much faster, but`
			`binaries won't run on CPUs that don't support it.`