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Description
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| The libtune project aims at providing a standard
API to unify the various
ways Linux developers
have to access kernel tunables, system information, resource
consumptions. |
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Generally, installing an application
can be divided into the following four tasks:
- Check the requirements,
- Tune the system-wide parameters (kernel, vm,
file system, networking, etc),
- Set the per-user limits,
- Set the per-process parameters.
After the application installation has completed and while that
application is running, it may be needed to get some system statistics
about resource consumptions and utilization, in order to appropriately
tune the kernel parameters.
The process that has been described above is usually implemented
through installation and supervision scripts.
Unfortunately, the following issues have been identified:
- There are quite multiple ways of accessing the
kernel configuration and tunables: /procfs, /sysfs, sysconf(),
rlimit(), etc...,
- These scripts are rarely portable, since they
require to get, set
and change values that are represented by objects that may change from
distribution to distribution, or from one release to the other inside
the same distribution.
This raises the need for a standard, well defined API to manipulate the
kernel configuration and tunables for software products to relay on.
The libtune (Tunables library) project aims at providing such an
API, built on top of the existing mechanisms (in order not to break
backward compatibility), that would be used by the applications to
manipulate the information and tunables from the kernel.
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