Below is an athene ® example chart displaying the kind of CPU Usage breakdown (System + User = Total) reporting you should be doing for your systems.
Some questions:
What is the breakdown? Is user
CPU higher? Should it be? If it’s not what is happening on the system
to generate such greater CPU usage?
I/O Response
Time
Another example report is shown below, this time showing I/O response
times on UNIX/Linux disks.
This example is from a SUN Fire 280.
But because of the large numbers of disks, we will want to filter on a
Top N (5) basis to identify the key disks which could be experiencing
performance problems.
The remainder of the disks are then aggregated as shown in Pink. This in effect produces a cumulative picture
of disk performance.
In Summary
I'll leave you with a summary of my series.
UNIX/Linux
systems - are a well-established part of any data center, hosting applications
and database alike.
UNIX and
Linux virtualization - is commonplace within organizations providing the
flexibility to host many virtual machines and also to underpin Cloud Computing
services such as IaaS, PaaS and SaaS.
Monitor and
analyze the data - but be aware of what it is telling you. If it doesn’t add up then it doesn’t add
up. Have you got the right packages
installed, e.g. sysstat?
Linux
popularity is ever increasing - GUI driven, a similar model to
Windows, supported on x86 virtualization, gone from SMBs to multi-national
organizations and installed on supercomputers.
Also found on a range of hardware from mobile/cell phones to aircraft
entertainment systems.
UNIX/Linux
systems support Big Data implementations - by using HDFS (Hadoop) software
and its Map/Reduce functionality. Many
individual systems with local block storage storing the data via Map and
reported on via Reduce.
Understand
the technology – we need to have a good understanding of the
technology to be able to perform effective Capacity Management.
Identify what
you need to monitor and analyze - get the business information, and
predict future usage.
Webinars that I have hosted on this subject are available to download by joining our Community
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