Re: [JunkMail] Re: Wishes for set ACLs

[Howard Chu <hyc@symas.com>]

Deadlocks that BDB detects and reports are acceptable, because there's 
retry code to handle that. Undetected deadlocks (due to mutexes outside 
of BDB's control) are the only problem I'd worry about.

Pierangelo Masarati wrote:

> Howard Chu wrote:
>
> > Kurt D. Zeilenga wrote:
> >
> > > At 03:40 PM 3/17/2005, Howard Chu wrote:
> > >  
> > >
> > > > And then move the mutex into the chk_crypt routine itself.   
> > >
> > >
> > >
> > > Moving the mutex into -lutil might be a bit problematic.
> > > The library is designed not to require -lldap_r (or -lldap
> > > or -llber).
> > >
> > > You could resolve the problem by moving lutil_passwd into
> > > slapd(8).
> > >
> > >  
> > Hm.... OK. We don't need to move lutil_passwd, just the chk_sasl and 
> > chk_crypt functions. Since we can register password mechs from 
> > outside the library, this is easy enough.
> After all fixing, in my very unrealistic testing (massive modification 
> and accessing of the very same two entries by three clients, plus a 
> number of searches) I'm still seeing some deadlocks; would you 
> consider this a problem, or could we consider it acceptable?
>
> 68      Last allocated locker ID.
> 2147M   Current maximum unused locker ID.
> 9       Number of lock modes.
> 1000    Maximum number of locks possible.
> 1000    Maximum number of lockers possible.
> 1000    Maximum number of lock objects possible.
> 16      Number of current locks.
> 18      Maximum number of locks at any one time.
> 32      Number of current lockers.
> 33      Maximum number of lockers at any one time.
> 9       Number of current lock objects.
> 11      Maximum number of lock objects at any one time.
> 2413169 Total number of locks requested.
> 2413021 Total number of locks released.
> 0       Total number of lock requests failing because DB_LOCK_NOWAIT 
> was set.
> 65754   Total number of locks not immediately available due to conflicts.
> 125     Number of deadlocks.
> 0       Lock timeout value.
> 0       Number of locks that have timed out.
> 0       Transaction timeout value.
> 0       Number of transactions that have timed out.
> 440KB   The size of the lock region..
> 11056   The number of region locks granted after waiting.
> 4524022 The number of region locks granted without waiting.
>
> p.
>
>
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--
 -- Howard Chu
 Chief Architect, Symas Corp.       Director, Highland Sun
 http://www.symas.com               http://highlandsun.com/hyc
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