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high network utilisation

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amithp
Frequent Advisor

high network utilisation

Hi the database server SD64B, HPUX 11.31

has very high network utilisation.

Please advise how to check the culprit?



Glance C.04.73.400 04:16:31 proudb07 ia64 Current Avg High
------------------------------------------------------------------------------------------------------------------------------
CPU Util SSU U | 9% 11% 36%
Disk Util F F | 14% 35% 100%
Mem Util S SU UF F | 82% 85% 96%
Networkil U UR R | 70% 74% 90%
------------------------------------------------------------------------------------------------------------------------------
PROCESS LIST Users= 12
User CPU % Thrd Disk Memory Block
Process Name PID Name (1600% max) Cnt IOrate RSS/VSS On
--------------------------------------------------------------------------------
rman 6619 oracle 97.1 1 0.0 264.7mb 267.7mb PRI
perl 1566 root 8.0 1 0.0 3.0mb 8.3mb died
5 REPLIES
Steven E. Protter
Exalted Contributor
Solution

Re: high network utilisation

Shalom,

Your network utilization is above average, but as long as it never hits 100% you will not have a problem.

This looks like a superdome.

You can increase band width by purchasing and installing APA, Auto Port aggregation. This permits you to combine two network ports as one and increase band width. This is network bonding for HP-UX.

Based on the data submitted, you have a lot of data being read by oracle across the network. Is the database hosted on NFS? Are there a lot of inefficient queries in the database? Consult your dba.

SEP
Steven E Protter
Owner of ISN Corporation
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Zinky
Honored Contributor

Re: high network utilisation

Amith,

My guess is your on an rx**40 server and using Gigabit - right? And you're using GlancePlus/OVPA with out of the box settings.

CAn you hit "l" (lower case in glance and post please? It will show you you're "LAN Interface Stats".

OOTB (Out of the Box), there are certain metrics (DiskIO and Network are some) that are not really representative of what you are experiencing. Network is usually shown as 100% in Glance if any of your LAN interfaces show in or out packets exceeding 1000 packets/second even if byte throughput is in the KBytes/second.

Hakuna Matata

Favourite Toy:
AMD Athlon II X6 1090T 6-core, 16GB RAM, 12TB ZFS RAIDZ-2 Storage. Linux Centos 5.6 running KVM Hypervisor. Virtual Machines: Ubuntu, Mint, Solaris 10, Windows 7 Professional, Windows XP Pro, Windows Server 2008R2, DOS 6.22, OpenFiler
Zinky
Honored Contributor

Re: high network utilisation

In my ecosystem -- my Network is practically 100% reported as utilized as we have a lot of inter-server transactions in the order of 5,000 packets per second in small packets (transactional). But our applications are happy - transactions are fine.
Hakuna Matata

Favourite Toy:
AMD Athlon II X6 1090T 6-core, 16GB RAM, 12TB ZFS RAIDZ-2 Storage. Linux Centos 5.6 running KVM Hypervisor. Virtual Machines: Ubuntu, Mint, Solaris 10, Windows 7 Professional, Windows XP Pro, Windows Server 2008R2, DOS 6.22, OpenFiler
rick jones
Honored Contributor

Re: high network utilisation

I would suggest looking to see if you have packet losses on the transmit queue(s) of your nics - lanadmin -g mibstats (I think the command changed in 11iv3, but typing lanadmin will point you at the new command). If you aren't dropping packets on outbound, you aren't oversaturated.
there is no rest for the wicked yet the virtuous have no pillows
amithp
Frequent Advisor

Re: high network utilisation

thank you all of you