Total Memory Used = (hrStorageUsed / hrStorageSize) * 100
Physical memory = (117279 / 128596) * 100 = 91%
Real memory = (103978/121008) * 100 = 85%
________________________________
From: Chee Meng Gui [mailto:[EMAIL PROTECTED]
Sent: 12 August 2008 22:55
To: Dave Shield
Cc: Hampton, Michael; net-snmp-users@lists.sourceforge.net
Subject: Re: how to monitor memory usage on freebsd systems
Sorry , actually have to multiply the hrStorageUsed by the
AllocationUnits, i.e.
1172379 x 4096.
So actually almost all the Physical and Real memories are used!
But this is definitely not the case.
So how to get the total memory used on a Freebsd system from snmp?
thank you.
hrStorageIndex hrStorageType
hrStorageDescr hrStorageAllocationUnits hrStorageSize hrStorageUsed
hrStorageAllocation
Failures
1 HOST-RESOURCES-TYPES::hrStorageRam Physical memory
4096 Bytes 128596 117279 0
2 HOST-RESOURCES-TYPES::hrStorageRam Real memory
4096 Bytes 121008 103978 0
On Tue, Aug 12, 2008 at 2:21 AM, Dave Shield
<[EMAIL PROTECTED]> wrote:
2008/8/12 Chee Meng Gui <[EMAIL PROTECTED]>:
> So the hrStorageEntry.hrStorageUsed.1 is in kilobytes?
hrStorageUsed is reported in the units specified in
hrStorageUnits.
So if hrStorageUnits.1 is 1024, then hrStorageUsed.1 is in Kb
> When I checked this result against the used memory output of
sysctl {
> hw.physmem - ( ( vm.stats.vm.v_inactive_count +
vm.stats.vm.v_cache_count +
> vm.stats.vm.v_free_count ) * hw.pagesize ) } , the two were
not equal.
On FreeBSD with the latest (5.4.x) agent, "Physical memory" is
retrieved by running sysctl on HW_USERMEM. Most of the other
values are calculated by running sysctl on VM_METER
See 'agent/mibgroup/hardware/memory/memory_freebsd.c'
for the details.
Dave
--
Chee Meng Gui
Function Engineering
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