I'd add that you can gather all the values (if not exactly the OID name at least the relative name) and compare from first /config/stats.conf and the resulting rrd files from the *.info files in /var/rrd, for example, from /var/rrd/connections.info:
# DO NOT DELETE OR MODIFY this autogenerated file.
# This file contains the contents of the RRDFILE section
# of the statsd.conf file used to
# generate the rrdfile: '/var/rrd/connections'
# To restore the /config/statsd.conf contents to match this
# rrdfile, replace the existing rrdfile entry for /var/rrd/connections
# with the contents of this file
RRDFILE "/var/rrd/connections" {
DATASOURCE "sslcurclientconns" {
EXPR "sslcurclientconns"
DSTYPE GAUGE
MIN 0
MAX UNKNOWN
}
DATASOURCE "sslcurserverconns" {
EXPR "sslcurserverconns"
DSTYPE GAUGE
MIN 0
MAX UNKNOWN
}
DATASOURCE "ssltotnatclient" {
EXPR "ssltotnatclient"
DSTYPE DERIVE
MIN 0
MAX UNKNOWN
}
DATASOURCE "ssltotcomclient" {
EXPR "ssltotcomclient"
DSTYPE DERIVE
MIN 0
MAX UNKNOWN
}
DATASOURCE "ssltotnatserver" {
EXPR "ssltotnatserver"
DSTYPE DERIVE
MIN 0
MAX UNKNOWN
}
DATASOURCE "ssltotcomserver" {
EXPR "ssltotcomserver"
DSTYPE DERIVE
MIN 0
MAX UNKNOWN
}
You can even repurpose that exact data if you want instead of duplicating the polling by using the rrdtool export command. An exmaple of that is shown in this thread.