X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=trunk%2Flttv%2Fdoc%2Fdeveloper%2Fust.html;h=02f2f3fa3df4aeeb7cc94bd1d6a6f5b6a1decb9a;hb=9dd3d20dcc9a5614a14ad0d0cd45581b0bf24cae;hp=3fb0c444ec025ded44abce5f974a2eb388081f66;hpb=70e10279d49df5cd7cbb28ef7d2178b6a30fd968;p=lttv.git diff --git a/trunk/lttv/doc/developer/ust.html b/trunk/lttv/doc/developer/ust.html index 3fb0c444..02f2f3fa 100644 --- a/trunk/lttv/doc/developer/ust.html +++ b/trunk/lttv/doc/developer/ust.html @@ -46,9 +46,11 @@ crashing). Such notification may be obtained through utrace. This tracing scheme plans to use a direct function call to tracing into buffers mapped in user-space. This should be an order of magnitude faster than the current Dtrace implementation (c.f. -https://ltt.polymtl.ca/tracingwiki/index.php/DTrace) which uses a breakpoint to +Dtrace information +on the TracingWiki) which uses a breakpoint to perform both dynamic and static user-space tracing. Performance comparison of a function call vs the int3 approach is available at -http://sourceware.org/ml/systemtap/2006-q3/msg00793.html (see "Conclusion"). +Markers vs +int3 performance comparison (see "Conclusion").