[dtrace-discuss] DTrace under Linux

[James Dickens]

On 2/14/07, 陶捷 (Euler Tao) <eulertao at gmail.com> wrote:
>
> Why do you say that SystemTap only is done on i386?
> Does it means that, compared with DTrace, SystemTap is focused more on
> hardware infomation?
>
> And it leads another question.
> Does DTrace has two different kernel parts?
> I means for the x86 and SPARC architecture, there're something different
> inside the 2 DTraces?



No Dtrace has not been ported to Linux, Systemtap is as close as it gets.
DTrace is currently limited to x86/64 and Sparc, Systemtap currently
supports  x86/64, PPC, and  s390 with its sparc implementation as well as
others platforms not as well tested or as far along. Systemtap has no
userland probes so its unable to probe user apps, something that google has
had for close to 3 years now. With that said Systemtap is not as stable even
on x86/s86 its primary platform as Dtrace is.

here are some links that compare DTrace and Systemtap

http://uadmin.blogspot.com/2006/06/dtrace-vs-systemtap-for-administrator.html

http://uadmin.blogspot.com/2005/09/systemtap-links.html

http://uadmin.blogspot.com/2006/05/what-is-dtrace.html

http://uadmin.blogspot.com/2006/09/systemtap-vs-dtrace-chart.html


James Dickens
uadmin.blogspot.com




thanks a lot :)
>
> Regards
>
> T.J.
>
> 2007/2/14, Damian Wojslaw < damian at wojslaw.pl>:
> >
> > On Tue, 2007-02-13 at 00:37 +0800, 陶捷 (Euler Tao) wrote:
> > > Dear All:
> > >
> > >         I heard that the Solaris' powerful tool, DTrace have been
> > > ported into Linux platform.
> > >         What's the name of that project? Where could I find its
> > > homepage?
> > >         And what's the name of this new linux tool.
> >
> > It wasn't and it probably will not be. Linux developers are coming with
> > their own tool called systemtap, which homepage can be found here:
> > http://sourceware.org/systemtap/ but as far as I know it lacks support
> > for userland probing, works for this feature are only being done on i386
> > architecture and it's documentation isn't as extensive as DTrace.
> >
> > Regards
> >
> > Damian Wojslaw
> >
> >
>
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