SIPp appears to be a memory leak when the stress test call in

[gao114882]

Sip version:
v3.7.1

the script is:
./sipp -r 2 -rp 1000 -sf ./conf/uac.xml -inf ./conf/user.csv 192.168.1.102:5080 -l 300 -m 150000 -max_sched_loops 15000 -max_recv_loops 15000 -bg

the memory alway increase :

[gao114882]

new situation： SIPp version: 3.6.1 is ok。