oprofile in pt-stalk won't work with galera/pxc

[Raghavendra D Prabhu]

This is how oprofile and its utils are invoked

=====================
      local mysqld_path=$(_which mysqld);
      if [ "$mysqld_path" -a -f "$mysqld_path" ]; then
         $CMD_OPREPORT \
            --demangle=smart \
            --symbols \
            --merge tgid \
            session:pt_collect_$p \
            "$mysqld_path" \
            > "$d/$p-opreport"

==========================================

The galera library is dlopened by wsrep as a plugin. However, I
think, invoking opreport as above won't involve those.

Speaking of which, I don't think any other plugins (which are similarly dlopened) will feature either (plugins like the PAM etc.).

So, this needs to be fixed - either in how this is invoked or
reported.

[Raghavendra D Prabhu (raghavendra-prabhu)]

I am not completely sure how can this be achieved in oprofile:

a) Different oprofile specification involving those libraries.

b) Separate global opcontrol report.

Other than this, I think perf should handle this perfectly, I
remember filing a bug for this but closed later as wishlist or
something.

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PT-1090