Posted Jul 3, 2008 13:16 UTC (Thu) by SEJeff (subscriber, #51588)
Parent article: More DTrace envy
@Jake, the article writer:
How can you mention SystemTap's lack of userspace tracing support when it does support this
feature? Roland McGrath of redhat is working on a new ptrace() named utrace. Using utrace,
someone created a project named uprobes . Using uprobes, tapsets including userspace
tracing were written at .
Roland made grumbles of submitting utrace for mainline again not so long ago. Once utrace is
in mainline we will soon see full userspace + kernelspace tracing support in SystemTap. The
systemtap + utrace userspace tracing support was put into RHEL5.2 beta .
So please get the facts straight. While it would be *REALLY NICE* if sun were to allow DTrace
in Linux by relicensing it gplv2, that doesn't look like it will happen.
Linux's answer to DTrace = SystemTap + uprobes
Linux's answer to ZFS = btrfs
As fast as things are developing we aren't a long way off. This isn't fud, only facts people.
 http://www.redhat.com/archives/rhelv5-announce/2008-March... CTRL F SystemTap