Date: Wed, 1 Sep 2010 12:20:37 +0200 From: =?UTF-8?Q?Marius_N=C3=BCnnerich?= <marius@nuenneri.ch> To: Rui Paulo <rpaulo@freebsd.org> Cc: "current@freebsd.org Current" <current@freebsd.org> Subject: Re: DTrace userland project Message-ID: <AANLkTikNgM4OCSREH7P7NncWBKkNMuAqs1B7qq6Po8HL@mail.gmail.com> In-Reply-To: <236CEF13-3153-4ACA-9C67-B0116FF76EB3@FreeBSD.org> References: <236CEF13-3153-4ACA-9C67-B0116FF76EB3@FreeBSD.org>
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On Wed, Sep 1, 2010 at 00:21, Rui Paulo <rpaulo@freebsd.org> wrote: > Hi, > The DTrace userland project is near completion and you can start using parts of it right away (only on FreeBSD HEAD right now). > > For more information on how to use DTrace with userland, please read: > http://wiki.freebsd.org/DTrace/userland Hi, I set this up in a VirtualBox with 9-current r212073 amd64, 4-cores, amd-v and nested paging enabled. I tried dtruss /usr/bin/true it works but is really slow, it takes ~10s to switch vt. I tried the pid example as well, if I execute it on ttyv0 I can see lots of kernel trap 12 with interrupts disabled messages flying by and inbetween the desired _sleep:entry probes. When I execute that script on ttyv1 I obviously don't see the kernel trap messages and the machine kindof locks up (no output at all). I can do a clean ACPI shutdown though. - Marius
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