Fast performance problem solutions for z/VM and Linux for System z
On the VM and Linux mailing lists, a common question is asked: "My Linux is running slow, why?" This is like asking a garage mechanic why your car stopped, or telling a doctor "it hurts" without defining "it". There are several issues to be overcome in tuning Linux on System z. The first is the ability to detect problems; next is the ability to understand the problem; and third is the abilty to derive a solution.
Velocity Software provides zTune to help with all three of these issues.
zTUNE is a feature of all Velocity Software performance products, and
includes the services of the world's leading performance experts at
The zTUNE feature is the result of 15 years of solving VM and Linux on
System z performance problems.
zTUNE can be installed on any z/VM system, where it will quickly diagnose over 100 different problems and, in most cases, give recommendations on how to correct them. This is even better than having a high- priced expert on site at all times, because as problems are discovered at other installations, new diagnostics will be added. Thus you receive the benefits of knowledge gleaned installations that were there before you. Check it out...
zTUNE is a subscription service provided by Velocity Software to
quickly resolve your z/VM and Linux on System z performance problems.
zTUNE identifies problems in z/VM and Linux on System z running under
z/VM, and provides corrective recommendations when possible.
When zTUNE cannot identify the problem, the world's leading performance
experts are ready to solve your problems for no extra charge.
zTUNE requires a subscription license, and the lease and installation of Velocity Software's performance tools (ZVPS). Pay one annual fee and have performance analysis services available whenever you need them!
Features and Benefits
See "zTUNE Examples" for some sample reports.
zTUNE can detect many zLINUX problems as well.
For this added support, one of ZMON, or ZVPS is required.
zMON is not a candidate for this support.
Net-SNMP must be installed and active on all Linux on System z nodes being serviced.
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