net rpc vampire performance

[Jim McDonough]

>Cynical question: What is so slow with the current approach? Is it the
>fork/exec of perl stuff, or is it the LDAP server? If it's the latter,
maybe
>it would be better to fix the LDAP server. Maybe just for the vampire you
can
>run it with a bdb backend tuned towards speed an not safety. I'm sure
>DB_CONFIG has a lot to offer to make things fast.

There are multiple issues in the current approach that slow it down.
Fork/exec for each user is definitely one piece, but even if the posix
users are already defined, checking that via nsswitch first, then modifying
each user is still very slow, and then ldap itself is another issue.  The
entire design is filled with slow pieces.

----------------------------
Jim McDonough
IBM Linux Technology Center
Samba Team
6 Minuteman Drive
Scarborough, ME 04074
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jmcd at us dot ibm dot com
jmcd at samba dot org

Phone: 1-877-228-1846
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