5 Day(s)


This course is for experienced administrators. Advanced troubleshooting techniques are shown using crash and truss. Tuning the performance of UNIX is looked at in detail along with the structure of the UNIX kernel. The course uses hands on with Solaris and Linux but can be customised for other UNIX variants


  • System administrators.
  • Network administrators.
  • Support personnel.

Skills Gained

By the end of the course delegates will be able to

  • Customise the UNIX kernel.
  • Use UNIX tools to analyse problems.
  • Monitor the performance of UNIX.
  • Add and remove device drivers to and from the UNIX kernel.
  • Tune the UNIX system.
  • Describe the organisation and implementation of the filesystem.


  • Essential UNIX administration
  • Knowledge of shell programming and C would be useful though not essential.

Course Specifics

Course Outline

NOTE: The exact contents of this course will depend on the specific variation of UNIX (e.g. AIX, HP/UX, Linux or Solaris) required

UNIX versions

UNIX flavours, how the version of UNIX affects tuning and troubleshooting

System sizing and estimation

Overview, performance concepts, benchmarks, system sizing, performance tuning process, system resources

Overview of the UNIX kernel

Micro kernels, Monolithic kernels, Kernel modules, the kernel

Kernel tuning

Overview, Tuneable parameters, changing parameters, static changing, dynamic changing

Problem analysis tools

Passwords, recovering lost root passwords, common problems, log files, Kernel errors, PANIC, crash, core dump analysis, syslog, process tracing with truss, fsdb

Performance monitoring tools

Cron tables, Systems accounting, sar, iostat, vmstat, kernel profiling and tracing

CPU bottlenecks

Issues and approaches, sar, ps, top, systems accounting, Assessing the load, priorities, customising the scheduler, dispatcher tables, multiple CPUs

Memory bottlenecks

Memory layout, paging, swapping, calculating process sizes, performance solutions, controlling paging and swapping

Disk bottlenecks

Disk structure, the buffer cache, monitoring and balancing the load, tuning actions, virtual disks


Filesystem types - s5, ufs, Vxfs, ext3, structure, problems, performance

Thinking about Onsite?

If you need training for 3 or more people, you should ask us about onsite training. Putting aside the obvious location benefit, content can be customised to better meet your business objectives and more can be covered than in a public classroom. It's a cost effective option.

Submit an enquiry from any page on this site, and let us know you are interested in the requirements box, or simply mention it when we contact you.

Upcoming Dates

a Location Cost Days Date  
Reading 529 Dec 15
Birmingham 516 Nov 15