Re: Deadlocks when writing in parallell (two processes)

[Stelios Grigoriadis <stelios.xx.grigoriadis@ericsson.com>]

Quanah Gibson-Mount wrote:
> --On Tuesday, April 01, 2008 1:43 PM +0200 Stelios Grigoriadis 
> <stelios.xx.grigoriadis@ericsson.com> wrote:
>
>
> > I see in the code that a key (the same it seems to be) is repeatedly
> > written, and a comment is stating that
> > /* Don't worry if it's already there */ (line 862 in
> > servers/slapd/back-bdb/idl.c).
> >
> > Is this to be expected or have we done something wrong?
>
> It is to be expected.
>
> In testing we did @ Zimbra, we found it to be substantially slower to 
> do writes in parallel than to just serialize the writes.  I suggest 
> you rework your process. ;)
>
> --Quanah
>
> --
>
> Quanah Gibson-Mount
> Principal Software Engineer
> Zimbra, Inc
> --------------------
> Zimbra ::  the leader in open source messaging and collaboration

Actually, we're not trying to speed things up by writing in parallell. 
It just happens that the clients are on different machines and writes to 
the ldap master. So serialization is not an option.

/Stelios