Dear all,
I'd like to announce publication of Linux Kernel State Tracer (LKST) 1.0,
which is a tracer for Linux kernel.
LKST's main purpose is debugging, fault analysis and performance analysis of
enterprise systems.
For the purpose, LKST has these features,
- It is possible to change dynamically which events are recorded.
Developers can obtain information about the events which they
concern only interesting events.
And, It reduces the overhead of components which is not related
with trouble.
- It is possible to change each function invoked each events.
A default function of all events is just recording the events.
But, if it is necessary, default function can be changed to
another function.
For example, this feature can be used as following:
+ Notify user processes when the function detects abnormal status.
+ Change a maskset,which controls what type of events should be
recorded, dynamically by the function.
-> The system can usually run with a few events trace for the
cause of good performance. And, when the function detects
abnormal status, it can change a maskset to get more
detail information.
Users can create and install any function as kernel module.
We released the beta version of LKST in January, 2002. And the followings are
added with the LKST 1.0.
- Replace the current trace hooks with Kernel Hooks (formerly known as GKHI)
by IBM.
- Integrate with Linux Kernel Crash Dump (LKCD) to analyze the trace data
in a crash dump.
- Making of daemon that saves trace data into log files.
Note: The LKCD patch is not a official patch. If the official patch is released,
we will replace it with the official patch and release the LKST again.
LKST binaries, source code and documents are available in the following site,
https://sourceforge.net/projects/lkst/
or
http://oss.hitachi.co.jp/sdl/english/lkst.html (now updating)
We prepared a mailing list written below in order to let users know
update of LKST.
lkst-users@lists.sourceforge.net
To subscribe, please refer following URL,
http://lists.sourceforge.net/lists/listinfo/lkst-users
And if you have any comments, please send to the above list, or to
another mailing
list written below.
lkst-develop@lists.sourceforge.net
With kindest regards,
All of the LKST developers
----------------
Yumiko Sugita
Hitachi,Ltd., Systems Development Laboratory
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This archive was generated by hypermail 2b29 : Mon Apr 15 2002 - 22:00:24 EST