#2466 AgentX master agent failed to respond to ping

[Eric Chen]

1、my environment：
OS：redhat enterprise linux server release 6.2(santiago)
net-snmp version: 5.5
rpm package: net-snmp-5.5-37.el6.x86_64

2、details
a) this mulfunctioning tend to occur when system load is high.

b) when agentx log "AgentX master agent failed to respond to ping", the snmpd's cpu usage is about 100%, and restains in this error state.

c) i catch the stack info of snmpd as below:

#0  0x00007f62145169b9 in netsnmp_check_for_delegated () from /usr/lib64/libnetsnmpagent.so.20
#1  0x00007f621451bd0f in netsnmp_check_outstanding_agent_requests () from /usr/lib64/libnetsnmpagent.so.20
#2  0x00007f621451c805 in netsnmp_remove_delegated_requests_for_session () from /usr/lib64/libnetsnmpagent.so.20
#3  0x00007f621453d355 in close_agentx_session () from /usr/lib64/libnetsnmpagent.so.20
#4  0x00007f621453dacc in handle_master_agentx_packet () from /usr/lib64/libnetsnmpagent.so.20
#5  0x00007f621263266f in _sess_read () from /usr/lib64/libnetsnmp.so.20
#6  0x00007f6212633049 in snmp_sess_read2 () from /usr/lib64/libnetsnmp.so.20
#7  0x00007f621263310b in snmp_read2 () from /usr/lib64/libnetsnmp.so.20
#8  0x00007f621497affe in main ()

look forwad to your response, thank you.