Re: snmpd package do not have processor load in snmp tree?

[vincent@aib.net]

Hi Brian,

Yes we can also find the load average at /etc/snmpd/snmpd.conf.
As you said, we'd like to get the CPU usage in % (1-100%) for user,
system, idle, as we seen from the 'top' command. Is it the per-second
CPU usage you mentioned?

We'd like to use the value in MRTG report. If we can't get it from SNMP,
perhaps we better goto to write a script to get it from somewhere else
(proc filesystem?). :(


Best Regards,
Vincent

brian moore wrote:
> 
> On Tue, Jan 09, 2001 at 03:41:07PM +0800, Tam,  Vincent wrote:
> > Dear all,
> >
> > We're using Debian 2.2 system. We've installed the snmpd package
> > and configured read access. The problem is we cannot find any place in
> > the snmp tree that show the processor load?!
> >
> > We do an snmpwalk and found that under "host.hrDevice.hrProcessorTable"
> > there is only:
> > host.hrDevice.hrProcessorTable.hrProcessorEntry.hrProcessorFrwID.769 = OID: .ccitt.nullOID
> >
> > We can get the processor load in Debian 2.1's snmpd package, is
> > there something changed in Debian 2.2? How do we get it back?
> 
> You mean 'load average'?
> 
> It's there.  Look at /etc/snmp/snmpd.conf for docs on the UCD stuff:
> # % snmpwalk -v 1 localhost public .1.3.6.1.4.1.2021.10
> # enterprises.ucdavis.loadTable.laEntry.loadaveIndex.1 = 1
> # enterprises.ucdavis.loadTable.laEntry.loadaveIndex.2 = 2
> # enterprises.ucdavis.loadTable.laEntry.loadaveIndex.3 = 3
> # enterprises.ucdavis.loadTable.laEntry.loadaveNames.1 = "Load-1"
> # enterprises.ucdavis.loadTable.laEntry.loadaveNames.2 = "Load-5"
> # enterprises.ucdavis.loadTable.laEntry.loadaveNames.3 = "Load-15"
> # enterprises.ucdavis.loadTable.laEntry.loadaveLoad.1 = "0.49" Hex: 30 2E 34 39
> # enterprises.ucdavis.loadTable.laEntry.loadaveLoad.2 = "0.31" Hex: 30 2E 33 31
> # enterprises.ucdavis.loadTable.laEntry.loadaveLoad.3 = "0.26" Hex: 30 2E 32 36
> 
> etc.
> 
> You can configure it so that the above values generate 'errors' -- see
> snmpd.conf for details.
> 
> CPU usage (as in percentage idle, etc) is actually trickier, since the
> kernel doesn't keep track of it in any sort of useful way.  ("Are you
> asking for CPU usage over the last 5 minutes?  The last minute?  The last
> second?  Right now?  Well right -now-, I'm busy answering you, so I'm
> 100% utilized, but when that is done, I'll go back to 99% idle...")
> 
> --
> CueCat decoder .signature by Larry Wall:
> #!/usr/bin/perl -n
> printf "Serial: %s Type: %s Code: %s\n", map { tr/a-zA-Z0-9+-/ -_/; $_ = unpack
> 'u', chr(32 + length()*3/4) . $_; s/\0+$//; $_ ^= "C" x length; } /\.([^.]+)/g;