Re: [pcp] systemtap/pcp integration

[William Cohen <wcohen@redhat.com>]

On 07/21/2014 11:43 AM, David Smith wrote:
> On 07/18/2014 04:10 PM, William Cohen wrote:
>> Hi David,
>>
>> I was able to get this to work on RHEL 7.  However, on fedora20 the mmvdump
>> gets a sigsegv in the dump() function.
> 
> Thanks for the bug report. I believe I just fixed this one, so after
> updating let me know if it doesn't work for you.
> 

Hi David,

That fix made fedora 20 happy.  In one window did:

$ ./systemtap_write/install/bin/stap mmv.stp 
instances: 0, 1
indom: 0
metrics: 0, 1, 2

In another ran the mmvdump from pcp:

$ ./mmvdump /proc/systemtap/stap_cb2f18a783870e1474713324d01a25f_25939/mmv 
MMV file   = /proc/systemtap/stap_cb2f18a783870e1474713324d01a25f_25939/mmv
Version    = 1
Generated  = 769479
TOC count  = 5
Cluster    = 42
Process    = 0
Flags      = 0x0

TOC[0]: offset 40, indoms offset 1848 (1 entries)
  [1/1848] 2 instances, starting at offset 152
       shorttext=We can be heroes
       helptext=Set of instances from zero to hero

TOC[1]: offset 56, instances offset 152 (2 entries)
  [1/152] instance = [0 or "zero"]
  [1/232] instance = [1 or "hero"]

TOC[2]: toc offset 72, metrics offset 1880 (3 entries)
  [1/1880] counter
       type=64-bit int (0x2), sem=counter (0x1), pad=0x0
       units=count
       (no indom)
       shorttext=Example counter metric
       helptext=Yep, a test counter metric
  [2/1984] instant
       type=64-bit int (0x2), sem=instant (0x3), pad=0x0
       units=
       (no indom)
       shorttext=Example instant metric
       helptext=Yep, a test instantaneous metric
  [3/2088] indom
       type=64-bit int (0x2), sem=discrete (0x4), pad=0x0
       units=
       indom=1
       (no shorttext)
       (no helptext)

TOC[3]: offset 88, values offset 2192 (4 entries)
  [1/2192] counter = 0
  [2/2224] instant = 325
  [3/2256] indom[0 or "zero"] = 0
  [3/2288] indom[0 or "zero"] = 0

TOC[4]: offset 104, string offset 312 (6 entries)
  [1/312] We can be heroes
  [2/568] Set of instances from zero to hero
  [3/824] Example counter metric
  [4/1080] Yep, a test counter metric
  [5/1336] Example instant metric
  [6/1592] Yep, a test instantaneous metric

-Will