Solved

what is the best way to identify network i/o bottlenecks

Posted on 2010-09-22
8
1,103 Views
Last Modified: 2013-12-16
what is the best way to identify network i/o bottlenecks
 
we are suspecting there may be a network bottlenecks between our application and database servers. what is the best tool to confirm the bottleneck
0
Comment
Question by:sangate
8 Comments
 
LVL 3

Expert Comment

by:beezleinc
Comment Utility
OPNET tools  (www.opnet.com)

OPNET Ace can pinpoint pretty much any network or application response issue.
0
 
LVL 25

Assisted Solution

by:madunix
madunix earned 200 total points
Comment Utility
install MRTG to monitor network devices and servers http://oss.oetiker.ch/mrtg/
0
 
LVL 5

Assisted Solution

by:balasundaram_s
balasundaram_s earned 100 total points
Comment Utility
App & DB servers are in different networks, communicating via multiple routers/firewall.  How did you confirm network bottleneck,  do you see a lot of DROPPED network packets?
First step would be running TCP trace on each server and enable network spoofing and monitor the traffic.
Note, this monitoring could also impact the performance.
0
 
LVL 27

Accepted Solution

by:
Nopius earned 200 total points
Comment Utility
The simplest tool to monitor network load is 'iptraf' and 'vnstat'. The first will give you 'live' statistics on network bendwidth, currently used, the second will collect the same statistics and can show you 'hourly' 'monthly' and 'weekly' traffic load. Both tools are console based.

I'm attaching screenshots of iptraf (live) and vnstat (collected) statistics.



Regards,
Arty
iptraf.PNG
0
Control application downtime with dependency maps

Visualize the interdependencies between application components better with Applications Manager's automated application discovery and dependency mapping feature. Resolve performance issues faster by quickly isolating problematic components.

 
LVL 27

Assisted Solution

by:Nopius
Nopius earned 200 total points
Comment Utility
Here is vnstat hourly view.
vnstat-hourly.PNG
0
 
LVL 25

Assisted Solution

by:madunix
madunix earned 200 total points
Comment Utility
i use alos nmon for my AIX and linux server to find out more about performance network/cpu/disk beside top/vmstat/iostat/netstat.
http://www.ibm.com/developerworks/aix/library/au-analyze_aix/
http://www.ibm.com/developerworks/wikis/display/wikiptype/nmon
http://nmon.sourceforge.net/pmwiki.php
The nmon tool is designed for AIX and Linux performance specialists to use for monitoring and analyzing performance data, including:
CPU utilization
 Memory use
 Kernel statistics and run queue information
 Disks I/O rates, transfers, and read/write ratios
 Free space on file systems
 Disk adapters
 Network I/O rates, transfers, and read/write ratios
 Top processors
 IBM HTTP Web cache
 User-defined disk groups
 Machine details and resources

Generally in network adapter: if delay in your network  communications is detected (CRC errors, too many collisions, and so on) then overall performance of client-server communications is affected
So you need to give another level check the network speed settings of the NIC(network adapter settings)..check the switch port settings if you have access, also via netstat on the NIC ( man netstat) check CRC/Collision errors.

0
 
LVL 1

Expert Comment

by:Codefire
Comment Utility
You can also use something like OpenNMS. It takes more work to setup but it will stat your entire environment. Not to mention the alerting and trending, etc.
0
 
LVL 25

Assisted Solution

by:madunix
madunix earned 200 total points
Comment Utility
beside above i use open-source pack ......Cacti , MRTG  and nagios to monitor
look @:
http://www.groundworkopensource.com GroundWork Monitor Enterprise
http://www.hyperic.com Hyperic HQ
http://www.icinga.org Icinga
http://oss.oetiker.ch/mrtg/  mrtg
http://www.nagios.com Nagios
http://www.n-able.com N-central
http://www.op5.com op5 Monitor
http://www.open-itcockpit.com openITCockpit
http://www.opennms.org OpenNMS
http://www.hp.com/de/bto HP OpenView
http://www.bmc.com BMC PATROL ProactiveNet Performance Management
http://www.shinken-monitoring.org Shinken
http://www.ibm.com/software/de/tivoli IBM Tivoli
http://www.ca.com/de CA Unicenter
http://www.whatsupgold.com WhatsUp Gold
http://www.zabbix.com Zabbix
http://www.zenoss.com Zenoss Enterprise
0

Featured Post

What Security Threats Are You Missing?

Enhance your security with threat intelligence from the web. Get trending threat insights on hackers, exploits, and suspicious IP addresses delivered to your inbox with our free Cyber Daily.

Join & Write a Comment

As dyndns has reduced the capabilities of the free service, I looked around for other free providers of Dynamic DNS service. After testing several I decided to move my DNS hosting to Hurricane Electric as then domains that require dynamic hostnam…
The purpose of this article is to demonstrate how we can use conditional statements using Python.
Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.

771 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now