Tuning malloc

Purpose

The test result shows that the malloc hotspot is high. TCMalloc is more suitable for the current scenario than glibc malloc.

Procedure

1. Install the gperftools-libs package.

   1	yum install gperftools-libs

2. Configure LD_PRELOAD before starting Nginx.

   export LD_PRELOAD=/usr/lib64/libtcmalloc.so.4