On Wed, 14 Nov 2007, Skip Ford wrote:

Robert Watson wrote:
On Tue, 13 Nov 2007, Yuri wrote:

Thank you for letting me know about this new feature procstat.

But is there any workaround in 6.3? I need to port one package that needs to lookup file names by FDs to the current FreeBSD and need some solution now.

If the port uses a script to extract the data, a tool like lsof may do the trick. However, I'm not sure there are any native APIs to query that data "as shipped" in 6.3. Once I've had some reasonable feedback on procstat(1),

Well, the header file procstat.h is still missing from the tarball AFAICT so I don't know how many people are using it.

Whoops! While you have obviously extracted or recreated the file, here's a URL for everyone else:

  http://www.watson.org/~robert/freebsd/20071115-procstat.tgz

Not sure what type of feedback you want, but I've been using it since you posted the link and it works as advertised. I like being able to see the vm map without using procfs.

Yeah, that was pretty much the motivation. I also plan to add the ability to dump signal handler disposition information.

I don't like having a procstat(1) utility along with a ps(1) utility. "procstat" seems short for process status as does "ps". Seems like procstat(1) should be a library with ps(1) the frontend, or ps(1) should be merged with procstat(1).

Plus, the name "procstat" sounds an awful lot like a certain part of the body that makes me uncomfortable in my chair. Do you really want to spend the rest of your life asking people to see their procstat output? ;-)

You are more evil than previously understood. :-)

I agree regarding the duplication with ps(1) -- however, I'm generally of the opinion that ps(1) is overburdened as tools go, and that the goals are actually somehwat different--procstat(1) intentionally doesn't have the ability to generate a list of processes, for example, taking pids explicitly as the argument; likewise, historically ps(1) has not been interested in printing more than one line per process (although I think -h changed this). I'll do a bit more investigation as to how easily it can be wedged in, and do recognize the concern here.

But, it works fine and provides access to information that's not readily available by other means.

Thanks for the feedback (working fine is useful feedback),

Robert N M Watson
Computer Laboratory
University of Cambridge
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