>
>
> Thank you.
>
> Istvan
>
>
> On Mon, Oct 18, 2010 at 7:45 PM, Rui Paulo <rpaulo@freebsd.org> wrote:
>
> On 12 Oct 2010, at 23:40, István wrote:
>
> > Hey,
> >
> >
> > I am not 100% sure this is the right list to approach with this problem but
> > let's try this one.
> >
> > So I am trying to use dtrace on the previously mentioned system, I followed
> > the usual kernel rebuild process using the following wiki:
> >
> >
http://wiki.freebsd.org/DTrace
> >
> > Dtrace works fine and I am able to trace the kernel.[1]
> >
> >
> > My problem is: I can't trace any user land application including PostgreSQL
> > and Ruby.
> >
> > I added the following lines to the /etc/make.conf as it is written in the
> > wiki:
> >
> > STRIP=
> > CFLAGS+=-fno-omit-frame-pointer
> >
> > I compiled both of the softwares and trying to trace them but there are no
> > bindings in the dtrace -l ouput
> >
> >
> > # dtrace -l | grep -i ruby
> >
> > i might have overlooked something important but not sure what.
> >
> > Any help is appreciated. Pls cc my email since i am not on this list.
> >
> >
> > Thank you in advance.
> >
> > I.
> >
> > 1.
> >
> > [root@freebsd9 ~]# uname -a
> > FreeBSD freebsd9 9.0-CURRENT FreeBSD 9.0-CURRENT #0: Fri Oct 8 21:09:20 UTC
> > 2010 root@freebsd9:/usr/obj/usr/src/sys/DTRACE amd64
> > [root@freebsd9 ~]# kldstat
> > Id Refs Address Size Name
> > 1 26 0xffffffff80100000 f49bb0 kernel
> > 2 1 0xffffffff81212000 ad8 dtraceall.ko
> > 3 1 0xffffffff81213000 4a59 profile.ko
> > 4 11 0xffffffff81218000 3e2f opensolaris.ko
> > 5 3 0xffffffff8121c000 3db0 cyclic.ko
> > 6 9 0xffffffff81220000 13af4b dtrace.ko
> > 7 1 0xffffffff8135b000 fce0 systrace.ko
> > 8 1 0xffffffff8136b000 4128 sdt.ko
> > 9 1 0xffffffff81370000 44b8 lockstat.ko
> > 10 1 0xffffffff81375000 b94e fasttrap.ko
> > 11 1 0xffffffff81381000 61ab fbt.ko
> > 12 1 0xffffffff81388000 4a67 dtnfsclient.ko
> > 13 1 0xffffffff8138d000 4118 dtmalloc.ko
> > [root@freebsd9 ~]#
> >
> > [root@freebsd9 ~]# cat d.d
> > vfs:namecache:enter:done
> > {
> >
> > @distribution = quantize(strlen((string)arg1));
> > }
> > [root@freebsd9 ~]# dtrace -s d.d
> > dtrace: script 'd.d' matched 1 probe
> > ^C
> >
> >
> > value ------------- Distribution ------------- count
> > 2 | 0
> > 4 |@@@@@@@ 1
> > 8 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 5
> > 16 | 0
> >
> >
> >
>
> The Ruby port doesn't have DTrace support, but the PostgreSQL port has a DTrace option (only the latest postgresql port).
>
> Regards,
> --
> Rui Paulo
>
>
>
>
>
> --
> the sun shines for all
>
>
http://blog.l1x.me
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