Messages in this thread | | | Date | Tue, 29 Oct 2013 19:24:02 +0800 | Subject | [ANNOUNCE] ktap 0.3 released | From | Jovi Zhangwei <> |
| |
Dear,
I'm pleased to announce that ktap released v0.3, the archive is available at:
https://github.com/ktap/ktap/archive/v0.3.tar.gz
= what's ktap?
A New Script-based Dynamic Tracing Tool For Linux
ktap have different design principles from Linux mainstream dynamic tracing language in that it's based on bytecode, so it doesn't depend upon GCC, doesn't require compiling kernel module for each script, safe to use in production environment, fulfilling the embedded ecosystem's tracing needs.
ktap is released as GPL license.
More information can be found at ktap/doc directory.
Website: www.ktap.org
= Highlight features
- support tracepoints, k(ret)probe, u(ret)probe, timer, function tracing, etc. - support x86, x86-64, powerpc, arm, and preempt-rt kernel. - support kernel 3.1 and later versions, include Linux mainline.
= Highlight changes from v0.2
* New website for ktap: www.ktap.org
* Tutorial: http://www.ktap.org/doc/tutorial.html
* Wiki: https://github.com/ktap/ktap/wiki
* simple new tracing block syntax trace EVENTDEF { action } trace_end { action }
* New event tracing keywords: argevent, argname, arg1..arg9 trace "syscalls:*" function () { print(argevent) }
* New timer block syntax tick-N { action } profile-N { action }
* Basic aggregation support It's similar with systemtap, use "<<<" operator support aggregate function: count, sum, avg, max, min
* Introduce new "+=" operator
* Introduce sort_paris for table sort iteration
* New sample scripts helloworld.kp syscalls/sctop.kp profiling/stack_profile.kp io/traceio.kp mem/kmalloc-top.kp syscalls/errinfo.kp schedule/schedtimes.kp game/tetris.kp
* ansi library for sending ANSI escape sequences
* statistics of ktapvm * Big cleanups and lots of bugfix
= Source code
Please get latest code from: https://github.com/ktap/ktap.git
= Building & Running
[root@jovi]# git clone https://github.com/ktap/ktap.git
[root@jovi]# cd ktap [root@jovi]# make #generate ktapvm kernel module and ktap binary
[root@jovi]# insmod ./ktapvm.ko [root@jovi]# ./ktap helloworld.kp
= Samples scripts
There have many samples scripts in README and ktap/scripts/.
#ls scripts/ ansi game interrupt mem schedule tracepoints basic helloworld.kp io profiling syscalls userspace
Totally 29 sample scripts.
= Documentation
Documentation is in ktap/doc/, also can read from website: http://www.ktap.org/doc/tutorial.html
= Mailing list
ktap@freelists.org You can subscribe ktap mailing list at link: http://www.freelists.org/list/ktap
= Feedback
ktap is still under active development, so any feedback, bug reports, patches, feature requests, as always, is welcome.
= Contributors for this release
Thanks all contributors for this release.
Alen Skondro, Brandon Philips, Greg Kroah-Hartman, Jovi Zhangwei, Qingping Hou, Stanislav Fomichev, Tadaki SAKAI, Yegor Yefremov, Yicheng Qin.
Jovi
| |