can't get any snmp information via tools plugin

[johnzw]

I installed tools, settings, thold, monitor, update plugins in cacti 0.8.7b.
"network tools" appears in my cacti page and I can use it to do serivice check. The result is ok. However, I can't get any result via snmp walk.
Input host ip address, oid value and community, select snmp walk and click submit, only display "SNMP Walk results for x.x.x.x" and nothing else.
there is no error report. at the same time, I can get result via /usr/local/net-snmp/bin/snmpwalk -v 1 -c community ip address oid.

anyone can help me, thank you .

[jimmy]

Most likely PHP is running out of memory and not able to display the info, so instead try and see if you can walk a very small subset of the OID instead of .1

[johnzw]

thanks for jimmy'e reply.

I test this function according to your advise, but still nothing display.

192.168.0.100 is my netscreen ip address
.1.3.6.1.4.1.3224.16.1.2.0 is netscreen cpu utilization (1 min)

the result should be a integer, so, I think it wouldn't out of the memory.