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Re: ldap load measuring and reproduction tools
"Howard Chu" wrote:
True. The idea was to gather as much information as possible,
hoping/assuming that it would prove to be either 'generically applicable',
or at least 'translatable' to my specific scenario and situation.
Nowhere in this email thread have you ever mentioned the name or version
number of the "product" you're currently using.
Really? So you mean that - for example - 'multiple-master', or
'peer-replication' (or whatever you want to call multiple writeable servers
for the same suffix) is supported in OpenLDAP these days ? I couldnt find
that bit of information anywhere on the openldap website, but perhaps that
just means that I havent looked hard enough or in the wrong places.
I'll note that the current release (2.2.23) supports all of those features
On a side note, without knowing the size of your database or your query
rate, or the hardware involved, it's pretty tough for anybody to credibly
say whether updating 10-20 replicas will be practical or not.
Well one of the reasons behind the questions was that I was wondering if it
was realistic to expect any limitations in the software, like serialisation
and/or scalability issues.If it turns out to be a just an issue of
'throw-more-hardware-at-it-and-the-problem-will-go-away' then its not really
an issue for us. In my personal experience however, this is really rarely
the case in practice, and you will start to hit some sort of softwareinduced
scalability issue sooner or later. My main concern is whether it is
realistic to think that we will hit that limit for replication with the
amount of servers mentioned.
Anybody offering opinions on this question in the absence of such crucial
details is just blowing smoke.
Thank you for providing the insight.