7.10. Tcmalloc

‘tcmalloc’ is a library Google created as part of the google-perftools suite for improving memory handling in a threaded program. It’s very simple to use and does work fine with Suricata. It leads to minor speed ups and also reduces memory usage quite a bit.

7.10.1. Installation

On Ubuntu, install the libtcmalloc-minimal0 package:

apt-get install libtcmalloc-minimal0

On Fedora, install the gperftools-libs package:

yum install gperftools-libs

7.10.2. Usage

Use the tcmalloc by preloading it:

Ubuntu:

LD_PRELOAD=”/usr/lib/libtcmalloc_minimal.so.0" suricata -c suricata.yaml -i eth0

Fedora:

LD_PRELOAD="/usr/lib64/libtcmalloc_minimal.so.4" suricata -c suricata.yaml -i eth0