Messages in this thread | | | Subject | Re: [RFC PATCH 0/2] Perf support to SDT markers | From | Mark Wielaard <> | Date | Tue, 03 Sep 2013 17:11:02 +0200 |
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On Tue, 2013-09-03 at 16:21 +0200, Ingo Molnar wrote: > * Hemant <hkshaw@linux.vnet.ibm.com> wrote: > > > Here is an overview and a high-level-description: > > Thanks, looks like a pretty useful feature - especially if SDT probes are > already widely present in various server binaries on a typical Linux > distro (are they?).
They are becoming fairly common, especially now that glibc has adopted them. And they were designed to be source compatible with DTRACE markers [*]. So any program that has probes for dtrace can just be recompiled on with sys/sdt.h to get them.
My Fedora 19 box already has a couple of applications and libraries installed that support them:
$ stap -l 'process("/usr/*/*").mark("*")' | cut -f2 -d\" | uniq -c 9 /usr/bin/Xorg 9 /usr/bin/Xvfb 4 /usr/bin/c++ 4 /usr/bin/cpp 4 /usr/bin/g++ 4 /usr/bin/gcc 1 /usr/bin/gcov 4 /usr/bin/gfortran 3 /usr/bin/qemu-ga 75 /usr/bin/qemu-img 75 /usr/bin/qemu-io 75 /usr/bin/qemu-nbd 575 /usr/bin/qemu-system-i386 575 /usr/bin/qemu-system-x86_64 29 /usr/bin/stap 3 /usr/bin/stapdyn 3 /usr/bin/virtfs-proxy-helper 4 /usr/bin/x86_64-redhat-linux-c++ 4 /usr/bin/x86_64-redhat-linux-g++ 4 /usr/bin/x86_64-redhat-linux-gcc 13 /usr/lib/ld-2.17.so 1 /usr/lib/libanl-2.17.so 5 /usr/lib/libc-2.17.so 1 /usr/lib/libgcc_s-4.8.1-20130603.so.1 22 /usr/lib/libpthread-2.17.so 1 /usr/lib/librt-2.17.so 3 /usr/lib/libstdc++.so.6.0.18 13 /usr/lib64/ld-2.17.so 1 /usr/lib64/libanl-2.17.so 5 /usr/lib64/libc-2.17.so 3 /usr/lib64/libcacard.so.0.0.0 1 /usr/lib64/libgcc_s-4.8.1-20130603.so.1 6 /usr/lib64/libglib-2.0.so.0.3600.3 11 /usr/lib64/libgobject-2.0.so.0.3600.3 4 /usr/lib64/libm-2.17.so 23 /usr/lib64/libpthread-2.17.so 2 /usr/lib64/libpython2.7.so.1.0 2 /usr/lib64/libpython3.3m.so.1.0 1 /usr/lib64/librt-2.17.so 3 /usr/lib64/libstdc++.so.6.0.18 15 /usr/lib64/libtcl8.5.so 41 /usr/lib64/libvirt.so.0.1000.5 37 /usr/libexec/libvirt_lxc 12 /usr/sbin/ldconfig 3 /usr/sbin/libvirtd 34 /usr/sbin/prelink 12 /usr/sbin/sln 37 /usr/sbin/virtlockd
[*] http://tromey.com/blog/?p=687
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