>>>>> On Mon, 20 Jun 2005 14:46:54 +0800, "Ying Wang(CD)" <[EMAIL PROTECTED]>
>>>>> said:
Ying> When I walking (use the command snmpwalk) ifNumber repeatedly, I
Ying> found the memory is largely leaking, increasing 388k or 4k at
Ying> once. But if I just get (use the command snmpget) it repeatly,
Ying> it will not happen. And, this does not always happened in every
Ying> objects or table in mib-2. I don't know why, please help me!
Since this is on a linux machine, I suggest you try running it using
"valgrind' which is an excellent memory leak checker. Use "valgrind
--num-callers=16 --leak-check=yes snmpd"
Ying> The shell script I used to walk is as follows:
Ying> #!/bin/bash
Ying> declare -i count
Ying> count=1
Ying> while [ $count -le 10000 ]
Ying> do
Ying> echo "~~~~~~~~~~~~~~~~~$count~~~~~~~~"
Ying> snmpwalk -v 2c -c public 10.23.0.122 ifNumber
Ying> count=$count+1
Ying> done
Ying> My agent is running on Linux Redhat 9.0, and the version of net-snmp is
Ying> net-snmp-5.2.rc4.
Ying> My agent is created by mib2c use the template mib2c.scalar.conf, and is
Ying> dlmoded into net-snmp. The compiled source code is as follows:
Ying> #include <net-snmp/net-snmp-config.h>
Ying> #include <net-snmp/net-snmp-includes.h>
Ying> #include <net-snmp/agent/net-snmp-agent-includes.h>
Ying> #include "interfaces.h"
Ying> static int ifNumber = 0;
Ying> void init_interfaces(void)
Ying> {
Ying> static oid ifNumber_oid[] = { 1, 3, 6, 1, 2, 1, 2, 1 };
Ying> netsnmp_register_scalar(netsnmp_create_handler_registration
Ying> ("ifNumber", handle_ifNumber, ifNumber_oid,
Ying> OID_LENGTH(ifNumber_oid),
Ying> HANDLER_CAN_RONLY));
Ying> }
Ying> Int handle_ifNumber(netsnmp_mib_handler *handler,
Ying> netsnmp_handler_registration *reginfo,
Ying> netsnmp_agent_request_info *reqinfo,
Ying> netsnmp_request_info *requests)
Ying> {
Ying> switch (reqinfo->mode) {
Ying> case MODE_GET:
Ying> snmp_set_var_typed_value(requests->requestvb, ASN_INTEGER,
Ying> (u_char *)(&ifNumber)
Ying> ,sizeof(ifNumber));
Ying> break;
Ying> default:
Ying> snmp_log(LOG_ERR, "unknown mode (%d) in handle_ifNumber\n",
reqinfo-> mode);
Ying> return SNMP_ERR_GENERR;
Ying> }
Ying> return SNMP_ERR_NOERROR;
Ying> }
--
Wes Hardaker
Sparta, Inc.
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