[lttv.git] / tags / LinuxTraceToolkitViewer-0.10.0-pre-115102007 / doc / developer / lttng-lttv-new-features.html

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<body>
<center><big><big>LTTV & LTTng new features<small><small></center>
<br>
<br>
<P>
One might ask what are the new features present in LTTng and LTTV that are not
in the LTT toolkit. Here are the major enhancements.<br>
<br>
Here is a list of the new features in LTTV :<br>
Modular architecture based on plugins.<br>
Reads from several traces. It supports SMP machines.<br>
Synchronized graphical views. Plugins can cooperate to show the trace
together.<br>
Supports event types with metainformation.<br>
Supports huge traces : 10-15 GB.<br>
<br>
<br>
Here are the new features in LTTng/genevent :<br>
Real ~100ns time accuracy, with monotonic increment.<br>
Implements the "facility" event type metainformation.<br>
Supports variable size event records.<br>
Supports nested compound types : structures, array, sequences, unions, strings.<br>
Supports compiler and architecture independant elementary types.<br>
Supports ISO C compatible dynamic alignment of data.<br>
Solid atomic (lockless) logging (NMI, traps, faults handler safe).<br>
Supports writing to multiple traces at once (eventually with different
filters).<br>
Uses separate RelayFS channels for interrupts, modules, process and facility
events.<br>
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Commit	Line	Data
aa42bf7a	1	<html>
	2	<body>
	3	<center><big><big>LTTV & LTTng new features<small><small></center>
	4	<br>
	5	<br>
	6	<P>
9bf344bf	7	One might ask what are the new features present in LTTng and LTTV that are not
	8	in the LTT toolkit. Here are the major enhancements.<br>
	9	<br>
aa42bf7a	10	Here is a list of the new features in LTTV :<br>
	11	Modular architecture based on plugins.<br>
	12	Reads from several traces. It supports SMP machines.<br>
	13	Synchronized graphical views. Plugins can cooperate to show the trace
	14	together.<br>
	15	Supports event types with metainformation.<br>
	16	Supports huge traces : 10-15 GB.<br>
	17	<br>
	18	<br>
	19	Here are the new features in LTTng/genevent :<br>
	20	Real ~100ns time accuracy, with monotonic increment.<br>
	21	Implements the "facility" event type metainformation.<br>
	22	Supports variable size event records.<br>
	23	Supports nested compound types : structures, array, sequences, unions, strings.<br>
	24	Supports compiler and architecture independant elementary types.<br>
56d3e94d	25	Supports ISO C compatible dynamic alignment of data.<br>
c05c2b29	26	Solid atomic (lockless) logging (NMI, traps, faults handler safe).<br>
aa42bf7a	27	Supports writing to multiple traces at once (eventually with different
	28	filters).<br>
	29	Uses separate RelayFS channels for interrupts, modules, process and facility
	30	events.<br>
	31	</body>
	32	</html>
	33
	34