Re: Updated procstat(1)


On Tue, 27 Nov 2007, Wesley Shields wrote:

Here's an updated patch to sys/amd64/amd64/db_trace.c (it's a diff against revision 1.81). It changes "register rbp" to be "register_t rbp" and fixes the extra "W" in TD_IS_SWAPPED. The kernel built fine after these changes. I'll test it out tomorrow.

I've gone ahead and applied that change in Perforce, and look forward to hearing back on the testing.

I think procstat(1) is getting a lot closer to commitable state for 8-CURRENT, but further feedback would be most welcome (including reports of success on non-i386 architectures, and possibly patches to fix them). For FreeBSD developers with P4 access, you can also check out

Thank you for this. I think procstat(1) is going to be very useful.

If you can think of other process-inspection related things it could be doing, let me know. The one thing I currently have in mind that I haven't made progress on is dumping the kernel signal state for the process (i.e., what signals have handlers, etc), which may be useful when debugging signal problems for an application.

Robert N M Watson
Computer Laboratory
University of Cambridge
_______________________________________________
freebsd-hackers@xxxxxxxxxxx mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-hackers
To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@xxxxxxxxxxx"

Relevant Pages

  • Re: how do threads work?
    ... >> A process cannot consider to switch task unless the flow of instructions ... >> kernel for a little help, in the form of regular timer signals. ... If you now ask, how does the kernel deliver signals, then we are no longer ...
    (comp.os.linux.development.system)
  • Re: Comments on the KSE option
    ... think M:N support in the kernel is a good idea. ... When the userland thread library issues a non-blocking ... When the userland thread scheduler switches threads ... It must also poll for blocked signals. ...
    (freebsd-current)
  • Re: Function: int recv (Socket, Buffer,Length, Flags) is returning with the error number 4
    ... That's a nice speculation by someone with little clue in kernel ... what it means from a kernel coding standpoint to "interrupt a system call". ... set to EINTR after the handler was run, there was no 'kernel state' to ... kernel can deliver signals at any time to a thread which is currently ...
    (comp.unix.programmer)
  • Re: how do threads work?
    ... >> kernel for a little help, in the form of regular timer signals. ... it is signals. ... The kernel doesn't care if you switch stack causing such ... one CPU bound thrad and one I/O bound thread. ...
    (comp.os.linux.development.system)
  • Re: allocating kernel threads from a pool
    ... kernel level threads to do IO, so that a user-level thread's IO calls ... you don't need signals at all. ... another thread writes a pointer to a command to another end of the ...
    (comp.unix.programmer)