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Revision 24eea931efee97ef232ec90b081c1208e27b5ae4 authored by Dhruba Borthakur on 25 September 2012, 16:15:32 UTC, committed by Dhruba Borthakur on 25 September 2012, 18:07:01 UTC 
If ReadCompaction is switched off, then it is better to not even submit background compaction jobs.
 
Summary:
If ReadCompaction is switched off, then it is better to not even
submit background compaction jobs. I see about 3% increase in
read-throughput on a pure memory database.

Test Plan: run db_bench

Reviewers: heyongqiang

Reviewed By: heyongqiang

Differential Revision: https://reviews.facebook.net/D5673
1 parent 26e0ecb
Raw File
fbcode.gcc471.sh 
#!/bin/sh
#
# Set environment variables so that we can compile leveldb using
# fbcode settings.  It uses the latest g++ compiler and also
# uses jemalloc
# This is compiled with gcc version 4.7.1 for zeus proxy

TOOLCHAIN_REV=20d3328ac30f633840ce819ad03019f415267a86
TOOLCHAIN_EXECUTABLES="/mnt/gvfs/third-party/$TOOLCHAIN_REV/centos5.2-native"
TOOLCHAIN_LIB_BASE="/mnt/gvfs/third-party/$TOOLCHAIN_REV/gcc-4.7.1-glibc-2.14.1"
TOOL_JEMALLOC=jemalloc-3.0.0/69dc57c

# always build thrift server
export USE_THRIFT=1

# location of libhdfs libraries
if test "$USE_HDFS"; then
  JAVA_HOME="/usr/local/jdk-6u22-64"
  JINCLUDE="-I$JAVA_HOME/include -I$JAVA_HOME/include/linux"
  GLIBC_RUNTIME_PATH="/usr/local/fbcode/gcc-4.7.1-glibc-2.14.1"
  HDFSLIB=" -Wl,--no-whole-archive hdfs/libhdfs.a -L$JAVA_HOME/jre/lib/amd64 "
  HDFSLIB+=" -L$JAVA_HOME/jre/lib/amd64/server -L$GLIBC_RUNTIME_PATH/lib " 
  HDFSLIB+=" -ldl -lverify -ljava -ljvm "
fi

# location of snappy headers and libraries
SNAPPY_INCLUDE=" -I ./snappy"
SNAPPY_LIBS=" -L./snappy/libs"

# location of boost headers and libraries
THRIFT_INCLUDE=" -I $TOOLCHAIN_LIB_BASE/boost/boost-1.48.0/bef9365/include -std=gnu++0x"
THRIFT_INCLUDE+=" -I./thrift -I./thrift/gen-cpp -I./thrift/lib/cpp"
THRIFT_LIBS=" -L $TOOLCHAIN_LIB_BASE/boost/boost-1.48.0/bef9365/lib"

CC="$TOOLCHAIN_EXECUTABLES/gcc/gcc-4.7.1-glibc-2.14.1/bin/gcc" 
CXX="$TOOLCHAIN_EXECUTABLES/gcc/gcc-4.7.1-glibc-2.14.1/bin/g++ $JINCLUDE $SNAPPY_INCLUDE $THRIFT_INCLUDE"
AR=$TOOLCHAIN_EXECUTABLES/binutils/binutils-2.21.1/da39a3e/bin/ar
RANLIB=$TOOLCHAIN_EXECUTABLES/binutils/binutils-2.21.1/da39a3e/bin/ranlib

CFLAGS="-B$TOOLCHAIN_EXECUTABLES/binutils/binutils-2.21.1/bin/gold -m64 -mtune=generic -fPIC"
CFLAGS+=" -I $TOOLCHAIN_LIB_BASE/jemalloc/$TOOL_JEMALLOC/include -DHAVE_JEMALLOC"

EXEC_LDFLAGS=" -Wl,--whole-archive $TOOLCHAIN_LIB_BASE/jemalloc/$TOOL_JEMALLOC/lib/libjemalloc.a "
EXEC_LDFLAGS+="-Wl,--no-whole-archive $TOOLCHAIN_LIB_BASE/libunwind/libunwind-20100812_experimental/91ddd43/lib/libunwind.a"
EXEC_LDFLAGS+="$HDFSLIB $SNAPPY_LIBS $THRIFT_LIBS "
EXEC_LDFLAGS_SHARED="$SNAPPY_LIBS $TOOLCHAIN_LIB_BASE/jemalloc/$TOOL_JEMALLOC/lib/libjemalloc.so"

export CC CXX AR RANLIB CFLAGS EXEC_LDFLAGS EXEC_LDFLAGS_SHARED
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