On 16/02/10 at 20:35 +0000, Philipp Kern wrote: > On 2010-02-16, Lucas Nussbaum <lu...@lucas-nussbaum.net> wrote: > > Systemtap[1] is a tool allowing to dynamically insert probes in the > > Linux kernel, similarly to what is possible with DTrace on Solaris. > > [1] http://sourceware.org/systemtap/ > > > > The state of systemtap in Debian is currently worrying. First, the > > package has been orphaned (#568866). I'm willing to take over > > maintenance, but there's another, bigger problem: the Debian kernels > > don't provide debuginfo, so they are unsuitable for use with systemtap. > > Users are required to build a custom kernel. > > This has been discussed at length in #365349, and the blockers are: > > > > - disk space on buildds: at least 2 GiB are required to build a kernel > > with debuginfo. (that doesn't sound too hard to satisfy) > > > > - mirror space: each debug .deb would use ~ 450 MB (see > > http://ddebs.ubuntu.com/pool/main/l/linux/) > > > > Debian is currently the only major distro where users are required to > > build their own kernel to use systemtap, so I think that we should try > > to support it, at least for some kernel flavors and some > > architectures. > > > > Kernel, buildd and mirror people, what do you think? > > Is that supported on all architectures or is it architecture-specific?
Systemtap requires CONFIG_KPROBES, which is architecture specific. It works on x86(_64), ia64, arm, sparc, s390, powerpc. > Would it be sufficient to provide that infrastructure on the fast > arches? I'm concerned how much it increases the build process on our > slow architectures, especially considering that you need to write a lot > more to disk than it used to and I/O is not that fast. > > I guess we can arrange it for i386, amd64, powerpc, s390 and ia64 buildd- > wise. Well, anything would be better than the current situation. I'd be fine with i386 and amd64 for one kernel flavor for squeeze, but the more, the better ;) -- | Lucas Nussbaum | lu...@lucas-nussbaum.net http://www.lucas-nussbaum.net/ | | jabber: lu...@nussbaum.fr GPG: 1024D/023B3F4F | -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20100216210525.ga20...@xanadu.blop.info
