decreasing the memory footprint - SNMP
This is a discussion on decreasing the memory footprint - SNMP ; Hey everyone,
I have been trying to drop the memory footprint of net-snmp for about
a week now for an embedded systems project. I am using Net-SNMP
V5.4.1.2. The size started at 2196KB and my end goal is to have ...
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decreasing the memory footprint
Hey everyone,
I have been trying to drop the memory footprint of net-snmp for about
a week now for an embedded systems project. I am using Net-SNMP
V5.4.1.2. The size started at 2196KB and my end goal is to have it
under 500KB. After running this configuration:
../configure
--enable-mini-agent
--with-defaults
--with-cflags"-Os"
--with-out-mib-modules="snmpv3mibs"
--disable-manuals
--disable-privacy
--disable-des
--disable-md5
--disable-debugging
--disable-embedded-perl
--enable-fast-install
--without-kmem-usage
--without-rpm
--disable-snmptrapd-subagent
--with-out-transports="Unix"
After running this the footprint is 1680KB. Still way to high for my
use, but I think there is more I can take out and I just can't find
it. Any recommendations or suggestions? Also, I am going to have to
run the snmptrapd too and that takes up a ton of memory as well. I
haven't attempted to cut that down yet, but if anyone knows how I
would greatly appreciate the info.
On a side note, when I add in --disable-md5, I receive "Encryption
support not enabled." three times after I run any net-snmp command.
It can just be snmpwalk and that happens. Am I missing a flag to tell
net-snmp I am not using md5? I thought just disabling it would take
care of this.
Another question: I won't be using any of snmpv3. Would it be better
for me to try an earlier version of net-snmp? Has the memory size
gone up a lot since ucd?
Thanks you for any input,
Jacob
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Re: decreasing the memory footprint
A couple of updates:
I have done a couple dozen compilations, keeping track of options,
snmpd filesize, and snmpd memory footprint. Here are my results:
../configure
--with-cflags="-Os"
--enable-mini-agent
--disable-applications
--disable-des
--disable-debugging
--disable-embedded-perl
--with-out-mib-modules="snmpv3mibs"
--with-out-transports="UDPIPv6,TCPIPv6,Unix,Callback,AAL5PVC,IPX"
Has decreased the filesize to 22.795K and the memory footprint to
1664K.
I have also done a couple of tests on older versions of net-snmp (5.0
and 5.1). Both increased the filesize by several hundred K and both
decreased the memory footprint by about 100K.
I have had problems installing UCD-SNMP on my QNX environment, but I
am sure that will save even more space. Has anyone tried installing
UCD on QNX before? I am getting autoheader not found error. I'll try
downloading that package later today.
If anyone has any insight I would be glad to hear it, Thanks.
Jacob
-
Re: decreasing the memory footprint
A couple of updates:
I have done a couple dozen compilations, keeping track of options,
snmpd filesize, and snmpd memory footprint. Here are my results:
../configure
--with-cflags="-Os"
--enable-mini-agent
--disable-applications
--disable-des
--disable-debugging
--disable-embedded-perl
--with-out-mib-modules="snmpv3mibs"
--with-out-transports="UDPIPv6,TCPIPv6,Unix,Callback,AAL5PVC,IPX"
Has decreased the filesize to 22.795K and the memory footprint to
1664K.
I have also done a couple of tests on older versions of net-snmp (5.0
and 5.1). Both increased the filesize by several hundred K and both
decreased the memory footprint by about 100K.
I have had problems installing UCD-SNMP on my QNX environment, but I
am sure that will save even more space. Has anyone tried installing
UCD on QNX before? I am getting autoheader not found error. I'll try
downloading that package later today.
If anyone has any insight I would be glad to hear it, Thanks.
Jacob
