Re: Problem with Solaris8

[Tsurng-Chen Chern <tcchern@earthlink.net>]

Dear All,

   After couple of days experimenting with OpenLDAP 2.0.15 source
code, I finally isolated the problem with slapd core dumping under
Solaris 5.8 Sun Sparc SMP machines. Turned out the debug logging
function is not thread-safe, which is a big surprise, since it works
fine under Solaris 5.6. Either Sun changed their implementation of
va_start, vsnprintf, or the include files loading sequence need to
be re-worked for Solaris.

   For the time being, I have couple of solutions that'll work.

1. Don't use Solairs 5.8 :-(
2. Disable debug logging for production deployment :-|
3. Find a replacement for the debug logging function, here is
   what I did that works for me :-)

In include/ldap_log.h file, line 66 -

Replace ...

#define Debug( level, fmt, arg1, arg2, arg3 )   \
        do { \
                lutil_debug( ldap_debug, (level), (fmt), (arg1), (arg2),
(arg3) ); \
                if ( ldap_syslog & (level) ) \
                        syslog( ldap_syslog_level, (fmt), (arg1),
(arg2), (arg3) ); \
        } while ( 0 )

With ...

#define Debug( level, fmt, arg1, arg2, arg3 )   \
        do { \
                if ( ldap_debug & (level) ) \
                        fprintf( stderr, (fmt), (arg1), (arg2), (arg3)
); \
                if ( ldap_syslog & (level) ) \
                        syslog( ldap_syslog_level, (fmt), (arg1),
(arg2), (arg3) ); \
        } while ( 0 )



Tsurng-Chen Chern wrote:
> 
> Hi, Y'all,
> 
>    Anybody got slapd running on Solaris8. Here is my problem,
> when I ran multi-threaded slapd on multiple CPU Sun Sparc
> Solaris 5.8 machine, it core dumped in libc library. Of course,
> the core dump only occurs when I hit it with lots of processes
> generating lots of queries. The same program can run under same
> condiftion on single CPU machine without any problem, also
> no problem on Solaris 5.6 machines.
> 
>    Just like to see if anybody run into the same problem here.
> And if any, what is the solution?

-- 
Max Chern, Senior Software Engineer/DBA  |  Voice: 626-296-5014
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