DBERROR db3: lockers

[Scott Russell]

On Fri, Sep 13, 2002 at 12:59:36PM -0400, Lawrence Greenfield wrote:
>    Date: Fri, 13 Sep 2002 09:35:30 -0400
>    From: Scott Russell <lnxgeek at us.ibm.com>
> [...]
>    While testing Cyrus IMAPd 2.1.9 I noticed these errors in my logs:
> 
>      Sep 11 17:23:55 ogg lmtpd[773]: DBERROR db3: 16 lockers
>      Sep 11 17:23:55 ogg lmtpd[1409]: DBERROR db3: 17 lockers
>      Sep 11 17:23:56 ogg lmtpd[1508]: DBERROR db3: 9 lockers
>      Sep 11 17:23:56 ogg lmtpd[776]: DBERROR db3: 9 lockers
>      ...
>      Sep 12 09:54:33 ogg ctl_deliver[5430]: DBERROR db3: 5 lockers
> 
>    I've seen some discussion about them on the list and figured I would
>    report my case as well. I didn't notice them when I was load testing
>    but found them today during a log review. So far I cannot replicate
>    them again. Any suggestions as to what to do or check are welcome. 
> 
> Nothing is wrong. These messages are logged whenever Berkeley db
> encounters lock contention, but isn't necessarily a problem by
> themselves. This is especially likely when you have an empty or small
> duplicate delivery database and are receiving a large volume of
> e-mail.
> 
> Berkeley db 4.0 has a bug where the number of lockers isn't
> decremented properly, causing this number to be unreliable.

Okay. I assume that the Berkeley db 3.3.x doesn't have this same bug?

-- 
  Scott Russell (lnxgeek at us.ibm.com)
  Linux Technology Center, System Admin, RHCE.
  Dial 877-735-8200 then ask for 919-543-9289 (TTY)