From mboxrd@z Thu Jan  1 00:00:00 1970
From: laijs@cn.fujitsu.com (Lai Jiangshan)
Date: Mon, 19 Jan 2009 11:43:09 +0800
Subject: [ltt-dev] lttng development plan
In-Reply-To: <20090107170544.GA10541@Krystal>
References: <49646F42.5040003@cn.fujitsu.com> <20090107170544.GA10541@Krystal>
Message-ID: <4973F6CD.5040008@cn.fujitsu.com>

Mathieu Desnoyers wrote:
> Hi Gui,
> 
> My short-term roadmap is (those are the show stoppers) :
> 
> - Get lttng ascii dump to work.
>   - create periodical buffer flush per-cpu timer for data streaming
>   - Modify LTTng/lttd/lttv to support variable-sized buffers, so we
>     don't have to copy the padding. This implies creating an index in
>     lttv when opening the trace to know where the subbuffer start is.
>   - Waiting for Lai's channel and event ID management modifications
>     following my comments. This is needed so the IDs stays valid for the
>     binary->ascii in-kernel converter.
> - Support dynamic frequency scaling on x86.
> 
> Other nice-to-have, but not a priority :
> 
>   - Add support for Performance Monitoring Counters (PMC) so they can be
>     dumped in the traces.
>   - Put back support for kernel and userspace stack dump so it can be
>     connected to any given tracepoint.
>   - Linux ABI for fast userspace tracing.
>     - Then, add NPTL instrumentation (mutexes, phtreads).
>   - Integrate LTTng with LKCD, test with kernel crash extraction,
>     create tools to simplify extraction of traces from crashed kernel,
>     integrate those tools to ltt-control.

We will implement it.

>   - Create an in-kernel event filtering module which connects on
>     LTTng.
>   - Early boot tracing.

What your plan for early boot tracing?

>   - Virtual machine tracing support (time synchronisation).
>   - Cluster and distributed computer tracing support (time
>     synchronisation).
>   - Port kmemtrace, ftrace, blktrace, kvmtrace and others to LTTng.
>     Each could have its own channel.
> 
> Please ask if you need more information on specific items.
> 
> Best regards, and many thanks to Fujitsu for the good work,
> 
> Mathieu
> 
> 
> * Gui Jianfeng (guijianfeng at cn.fujitsu.com) wrote:
>> Hi Mathieu,
>>
>> I'd like to know whether you have a plan or roadmap 
>> for lttng's further developping.
>> If you have one, would you share it?
>>
>> -- 
>> Regards
>> Gui Jianfeng
>>
>