Minutes of SystemTap Conference Call, Oct 27, 2005

[Kevin Stafford <kevinrs at us dot ibm dot com>]

Minutes of SystemTap Conference Call, Oct 27, 2005

Participants:
IBM:
       Ananth Mavinakayanahalli (mananth@in.ibm.com -- Boston)
       Jim Keniston (jkenisto@us.ibm.com -- Beaverton)
       Kevin Stafford (kevinrs@us.ibm.com -- Beaverton)
       Hien Nguyen (nguyhien@us.ibm.com -- Beaverton)
       Prasanna Panchamukhi (prasanna@in.ibm.com -- Bangalore)
Red Hat:
       Elena Zannoni (ezannoni@redhat.com -- Boston)
       Graydon Hoare (graydon@redhat.com -- Vancouver)
       Martin Hunt (hunt@redhat.com -- Seattle)
       Frank Eigler (fche@redhat.com -- Toronto)
       Will Cohen (wcohen@redhat.com -- Raleigh)
Intel:
       Josh Stone (joshua.i.stone@intel.com -- Santa Clara)
       Anil Keshavamurthy (anil.s.keshavamurthy@intel.com -- Hillsboro)
Hitachi:
       Satoshi Oshima (soshima@redhat.com)

Actions Required (ARs):
>From 5/19/05:

23. Jim, Martin: Ensure that the runtime's stack-trace feature works
   appropriately when there are return probes in the call stack.
   [Update: Martin is working on this.  Jim will prototype an improvement
   whereby the saved IP is updated before the handler is called.]

>From 6/9/05:
26. Rusty/Brad: Forward email address of Intel test person to Jay
   Turner.  [Update 10/6/05: Will be done now that Intel has Jay's email
   address: jkt@redhat.com]

>From 6/23/05:
30. Rusty: Review Will's rendition of Rusty's test that exercises
   probes on a wide variety of instruction types.
   [Update: As of 7/7/05, Will still needs to hear back from Rusty.]

>From 7/28/05:
41. Anil: Post a summary of known djprobes implementation issues.
   [Update 10/6/05: Defer at least until djprobes discussion settles
   down a bit.]

>From 8/11/05:
44. Tom: Automate relayfs tests and post them to mailing list.
   [Update: In progress]

>From 8/18/05:

53. Anil: Test RCU-based SMP scalability feature on ia64.
   [Update: continue testing on 32 way machine and post to ML]

>From 8/25/05:

55. Elena: Investigate approaches to making the full SystemTap bug
   list available to SystemTap developers outside Red Hat.

>From 9/8/05:

57. Martin: Runtime build issues fix or unlink documentation from 
Runtime webpage.

>From 9/22/05:

73. Prasanna: post user space probes paper to ML
   [Update: Will post to ML after 10/11-14/05 conference]

76. Hien: post dumpstack routine that solves kallsyms_lookup PPC issue.

77. Frank: post prototype to do symbol lookup in the translator. 
(alternative
   to #76)

>From 9/29/05:

83. Kevin: Post SystemTap documentation, mirror examples on website.
   [Update: stap manpages mirrored on site, package requirement list
   to come (see #86)]

>From 10/6/05

86. Kevin: Compile list of known SystemTap package requirements to post to
   website.
   [Update: internal review of list in progress]

>From 10/20/05

89. Hien: Investigate new PPC64 stap symbol resolution mechanism.

90. Prasanna: Complete user-space probes (preferably RCU enhancement
   compliant) design/implementation in time for face-2-face.

91. Elena: Investigate solutions to elfutils license situation.

From 10/27/05

92. Jim: Post F2F agenda to ML.
   [DONE: Posted to perftools 10/27/05 & SystemTap list 10/28/05]

93. Anil: Post IA64 SystemTap Runtime patches to ML.
   [DONE: Posted 10/28/05]

94. Hien: Post PPC64 SystemTap Runtime paches to ML.
   [DONE: Posted 11/01/05]

95. Elena: Continue correspondance with RH legal regarding Elfutils license.

Martin has replaced the Runtime Map API with an improved design. Frank will
alter the translator accordingly to take advantage of the new API when he
gets the time.

Frank and Graydon have been in correspondance about the design of the
statistics feature soon to be incorporated into probe script language.
Graydon will post the model to the mailing list when it is complete.

Masami has implemented an updated IA64 Djprobes patch set and awaits review
at the face-2-face before submitting to LKML.

Many F2F agenda items were discussed.

--
Kevin Stafford
DES 2 | MS 2M3
Beaverton - OR
Linux Technology Center
IBM Systems & Technology
Phone: 1-503-578-3039
Email: kevinrs@us.ibm.com