Re: Close sometime takes a long time

[Hallvard Breien Furuseth <h.b.furuseth@usit.uio.no>]

On 05/19/2014 04:05 PM, Venkat Murty wrote:
> Why does close sometime take a long time?
>       mdb_env_close  (in sync7320902242508427276.so) + 69  [0x112e37d35]
>         mdb_env_close0  (in sync7320902242508427276.so) + 248  [0x112e37948]
>            close  (in libsystem_kernel.dylib) + 10  [0x7fff8bf900c2]
>
> Usually, happens when I have killed the process the last time.
>
> System: Mac OS X

Do you mean when the last existing process using the enviornment
is exiting?  If so, that makes sense:

On BSD systems, mdb_env_close() attempts to upgrade the readlock
on the lockfile to a writelock.  If that succeeds, it deletes
its semaphores since this is the last process using them.

But if you mean you killed the process, started another and then
close takes a long time, I don't know why.

--
Hallvard