Re: [dtrace-discuss] Dtracing influence functionality (of PCFS)

2009-10-15 Thread Ryan Johnson
Martin Cerveny wrote: DTrace does allow for some very unobtrusive observation. Enabling every fbt::: probe is always going to have a measurable effect on performance. Rather, I suspect a latent race condition, the window for which is opened once the code has been slowed down by the sledge

Re: [dtrace-discuss] Dtracing influence functionality (of PCFS)

2009-10-15 Thread Nicolas Williams
On Sat, Oct 10, 2009 at 07:56:14AM -0700, Martin Cerveny wrote: PS: I understand that there is the error in PCFS (I will probably find and correct the problem), but I am very disappointed by dtracing side effect This breaks non intrusiveness of dtrace. All DTrace did here was have some

Re: [dtrace-discuss] DTrace and JavaScript

2009-10-15 Thread Paul Li
Angelo, Thanks for the message! I've got another question. I'm going to trace user interaction with a AJAX Web page. Can DTrace capture such information as mouse click on or move over a button and keyboard input into a text field of a form? Basically, I want to know which element a user is