How are you measuring performance?

On Wed, Nov 10, 2010 at 1:57 PM, John Jasen <[email protected]> wrote:
> On 11/10/2010 11:41 AM, Atom Powers wrote:
>> > Sound like you need to do some work on your DB_CONFIG and LDAP indexes.
>
> dbconfig set_cachesize 0 52428800 0. It strikes me as too low, but am
> looking into that.

BDB has various tools for reporting performance. (db_stat)
I've had to boost by max_locks and regionmax fairly high.

>> > Do you know where your bottleneck is? Disk I/O, Processor, Memory
>> > context switching, etc?
>
> I believe processor-bound. Thread count is set to 32, which strikes me
> as a little high, per the tuning guide, but empirical tests showed it
> improved performance.

I've also found that the way ACLs are written has a huge impact on
performance, regex (set.exact) ACLs are especially painful.

-- 
Perfection is just a word I use occasionally with mustard.
--Atom Powers--
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