Re: how to monitor memory usage on freebsd systems
"Chee Meng Gui" <[email protected]>
| Newsgroups | gmane.network.net-snmp.user |
|---|---|
| Message-ID | <[email protected]> |
Thank you Michael
This is also what I thought.
But there is a problem.
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageUsed.1
= INTEGER: 246923
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageUsed.2
= INTEGER: 226633
I suppose it is 246923 kilobytes (phyiscal memory used) and 226633 kilobytes
(real memory)?
But in,
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageUsed.34
= INTEGER: 180591158
which is the /usr paritition, I have to multiply 180591158 by 2 to get
361182316 bytes which is the output of the
df command.
Ditto for hrStorageUsed.31 to 35 == have to multiply by 2!
So the hrStorageEntry.hrStorageUsed.1 is in kilobytes?
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.
I suppose when the snmpwalk command was run, the memory used was different
from when the sysctl command was run?
I tried running both commands (snmpwalk and sysctl) simultaneously (almost)
but the two results (memory used) were still not equal.
And in
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.1
= INTEGER: 259673
I have to multiply 259673 by 4 to get 1038692 KBytes
I suppose this is because the hw_pagesize is 4096 (whatever this is) -- this
is from sysctl -a.
Thank you
Gui
..
..
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrMemorySize.0 = INTEGER:
1038692 KBytes
..
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.1
= STRING: Physical memory
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.2
= STRING: Real memory
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.3
= STRING: Virtual memory
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.6
= STRING: Memory Buffer
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.7
= STRING: Cached memory
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.8
= STRING: Shared virtual memory
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.9
= STRING: Shared real memory
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.10
= STRING: Swap space
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.31
= STRING: /
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.32
= STRING: /dev
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.33
= STRING: /tmp
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.34
= STRING: /usr
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.35
= STRING: /var
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageAllocationUnits.1
= INTEGER: 4096 Bytes
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageAllocationUnits.2
= INTEGER: 4096 Bytes
...
...
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.1
= INTEGER: 259673 (have to x 4)
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.2
= INTEGER: 253590
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.3
= INTEGER: 121826486
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.6
= INTEGER: 28448
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.7
= INTEGER: 11829
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.8
= INTEGER: 6242
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.9
= INTEGER: 3120
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.10
= INTEGER: 1310688
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.31
= INTEGER: 5077079
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.32
= INTEGER: 2
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.33
= INTEGER: 2538519
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.34
= INTEGER: 211119221
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.35
= INTEGER: 15231318
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageUsed.1
= INTEGER: 246923
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageUsed.2
= INTEGER: 226633
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageUsed.3
= INTEGER: 121770459
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageUsed.8
= INTEGER: 2379
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageUsed.9
= INTEGER: 1128
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageUsed.10
= INTEGER: 135
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageUsed.31
= INTEGER: 597472
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageUsed.32
= INTEGER: 2
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageUsed.33
= INTEGER: 125
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageUsed.34
= INTEGER: 180591158 (have to x 2)
.iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageUsed.35
= INTEGER: 2764098
....
....
pa005# df
Filesystem 1K-blocks Used Avail Capacity Mounted on
/dev/twed0s1a 10154158 1195152 8146674 13% /
devfs 1 1 0 100% /dev
/dev/twed0s1e 5077038 252 4670624 0% /tmp
/dev/twed0s1f 422238442 361182316 27277052 93% /usr
/dev/twed0s1d 30462636 5528270 22497356 20% /var
pa005#
....
pa005# free
SYSTEM MEMORY INFORMATION:
mem_wire: 139108352 ( 132MB) [ 13%] Wired: disabled for paging
out
mem_active: + 122843136 ( 117MB) [ 11%] Active: recently referenced
mem_inactive:+ 729018368 ( 695MB) [ 69%] Inactive: recently not
referenced
mem_cache: + 48451584 ( 46MB) [ 4%] Cached: almost avail. for
allocat
ion
mem_free: + 4521984 ( 4MB) [ 0%] Free: fully available for
allocat
ion
mem_gap_vm: + 593920 ( 0MB) [ 0%] Memory gap: UNKNOWN
-------------- ------------ ----------- ------
mem_all: = 1044537344 ( 996MB) [100%] Total real memory managed
mem_gap_sys: + 19083264 ( 18MB) Memory gap: Kernel?!
-------------- ------------ -----------
mem_phys: = 1063620608 ( 1014MB) Total real memory available
mem_gap_hw: + 10121216 ( 9MB) Memory gap: Segment
Mappings?!
-------------- ------------ -----------
mem_hw: = 1073741824 ( 1024MB) Total real memory installed
SYSTEM MEMORY SUMMARY:
mem_used: 291749888 ( 278MB) [ 27%] Logically used memory
mem_avail: + 781991936 ( 745MB) [ 72%] Logically available memory
-------------- ------------ ----------- ------
mem_total: = 1073741824 ( 1024MB) [100%] Logically total memory
pa005#
---
On Mon, Aug 11, 2008 at 2:24 AM, Hampton, Michael <
[email protected]> wrote:
> Both! It depends which storage you want to measure. In the example bellow
> 1 = Physical Memory 2 = Virtual Memory (This may change for different
> systems).
>
> The number at the beginning (1 or 2) is the index.
>
> If you do the following command you get a table output. Column 1 is the
> index. It is this number you use.
>
> EXAMPLE:
>
> -bash-3.00$ snmptable -cMyString -v1 <IP ADDRESS> hrStorageTable
> SNMP table: HOST-RESOURCES-MIB::hrStorageTable
>
> hrStorageIndex hrStorageType
> hrStorageDescr hrStorageAllocationUnits hrStorageSize hrStorageUsed
> hrStorageAllocationFailures
> 1 HOST-RESOURCES-TYPES::hrStorageRam Physical
> memory 1024 Bytes 1022188
> 993792 ?
> 3 HOST-RESOURCES-TYPES::hrStorageVirtualMemory Virtual
> memory 1024 Bytes 3053796
> 993792 ?
> 6 HOST-RESOURCES-TYPES::hrStorageOther Memory
> buffers 1024 Bytes 176756
> ? ?
> 7 HOST-RESOURCES-TYPES::hrStorageOther Cached
> memory 1024 Bytes 575888
> ? ?
> 8 HOST-RESOURCES-TYPES::hrStorageOther Shared
> memory 1024 Bytes 0
> ? ?
> 10 HOST-RESOURCES-TYPES::hrStorageVirtualMemory Swap
> space 1024 Bytes 2031608
> 0 ?
> 31 HOST-RESOURCES-TYPES::hrStorageFixedDisk
> / 4096 Bytes 16672164
> 1411974 ?
> 32 HOST-RESOURCES-TYPES::hrStorageFixedDisk
> /boot 1024 Bytes 101105
> 12120 ?
> and the command you used gives the total size of the Physical Memory.
> -bash-3.00$ snmpwalk -cMyString -v1 <IP
> ADDRESS> hrStorageTable.hrStorageEntry.hrStorageSize.1
> HOST-RESOURCES-MIB::hrStorageSize.1 = INTEGER: 1022188
>
> To get the used part of the Physical Memory, use:
>
> -bash-3.00$ snmpwalk -cMyString -v1 <IP
> ADDRESS> hrStorageTable.hrStorageEntry.hrStorageUsed.1
> HOST-RESOURCES-MIB::hrStorageUsed.1 = INTEGER: 993544
> Hope this helps.
>
> ------------------------------
> *From:* [email protected] [mailto:
> [email protected]] *On Behalf Of *Chee Meng Gui
> *Sent:* 11 August 2008 05:49
> *To:* [email protected]
> *Subject:* how to monitor memory usage on freebsd systems
>
> Hi All
>
> I am trying monitor memory usage on a few Freebsd systems.
> Running net-snmp-5.4.1.2 on Freebsd 6.2 and 5.4.
>
> Question: How to monitor memory usage from the snmp info?
> Is it
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.1
> ?
> Or
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.2
> ?
> Or something else?
>
> Thank you.
> Gui
>
>
> A section of the snmpwalk results on one system:
>
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.1
> = STRING: Physical memor
> y
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.2
> = STRING: Real memory
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.3
> = STRING: Virtual memory
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.6
> = STRING: Memory Buffer
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.7
> = STRING: Cached memory
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.8
> = STRING: Shared virtual
> memory
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.9
> = STRING: Shared real me
> mory
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageDescr.10
> = STRING: Swap space
>
> ....
>
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.1
> = INTEGER: 259673
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.2
> = INTEGER: 253060
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.3
> = INTEGER: 121646841
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.6
> = INTEGER: 28448
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.7
> = INTEGER: 8621
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.8
> = INTEGER: 6310
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.9
> = INTEGER: 3190
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.10
> = INTEGER: 1310688
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.31
> = INTEGER: 5077079
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.32
> = INTEGER: 2
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.33
> = INTEGER: 2538519
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.34
> = INTEGER: 211119221
> .iso.org.dod.internet.mgmt.mib-2.host.hrStorage.hrStorageTable.hrStorageEntry.hrStorageSize.35
> = INTEGER: 15231318
>
>
> --
> Gui
>
>
> http://www.vital-group.com - Dedicated to business communications.http://www.vital-storage.com - Secure easy-to-use remote backups for business critical data.
>
> The information contained in this message is intended for the addressee only and may contain confidential and/or privileged information.If you are not the addressee, please delete this message and notify the sender; you should not copy or distribute this message or disclose its contents to anyone.Any views or opinions expressed in this message are those of the author and do not necessarily represent those of The Vital International Group or any of its affiliates.No reliance may be placed on this message without written confirmation from an authorised representative of its contents.
>
> Registered in England. Vital International Limited. Leigh House, Weald Road, Brentwood, Essex, CM14 4SX.Company registration number - 45022560.
>
> 08/11/08 10:24:40
>
>
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