Date: Mon, 18 Oct 2010 19:45:27 +0100 From: Rui Paulo <rpaulo@FreeBSD.org> To: =?iso-8859-1?Q?Istv=E1n?= <leccine@gmail.com> Cc: freebsd-current <freebsd-current@freebsd.org> Subject: Re: DTrace bindings are missing in FreeBSD 9.0 - CURRENT for userland apps Message-ID: <DE0D21FF-0E8F-4993-87B0-69B7AA74861C@FreeBSD.org> In-Reply-To: <AANLkTi=BTfcPYtO7Hby3dK7C7qiH2CXdThYyV9QBj8_T@mail.gmail.com> References: <AANLkTi=BTfcPYtO7Hby3dK7C7qiH2CXdThYyV9QBj8_T@mail.gmail.com>
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On 12 Oct 2010, at 23:40, Istv=E1n wrote: > Hey, >=20 >=20 > I am not 100% sure this is the right list to approach with this = problem but > let's try this one. >=20 > So I am trying to use dtrace on the previously mentioned system, I = followed > the usual kernel rebuild process using the following wiki: >=20 > http://wiki.freebsd.org/DTrace >=20 > Dtrace works fine and I am able to trace the kernel.[1] >=20 >=20 > My problem is: I can't trace any user land application including = PostgreSQL > and Ruby. >=20 > I added the following lines to the /etc/make.conf as it is written in = the > wiki: >=20 > STRIP=3D > CFLAGS+=3D-fno-omit-frame-pointer >=20 > I compiled both of the softwares and trying to trace them but there = are no > bindings in the dtrace -l ouput >=20 >=20 > # dtrace -l | grep -i ruby >=20 > i might have overlooked something important but not sure what. >=20 > Any help is appreciated. Pls cc my email since i am not on this list. >=20 >=20 > Thank you in advance. >=20 > I. >=20 > 1. >=20 > [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 ~]# >=20 > [root@freebsd9 ~]# cat d.d > vfs:namecache:enter:done > { >=20 > @distribution =3D quantize(strlen((string)arg1)); > } > [root@freebsd9 ~]# dtrace -s d.d > dtrace: script 'd.d' matched 1 probe > ^C >=20 >=20 > value ------------- Distribution ------------- count > 2 | 0 > 4 |@@@@@@@ 1 > 8 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 5 > 16 | 0 >=20 >=20 >=20 The Ruby port doesn't have DTrace support, but the PostgreSQL port has a = DTrace option (only the latest postgresql port). Regards, -- Rui Paulo
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