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List: info-cyrus
Subject: Re: Cyrus replication scaling
From: Adam Tauno Williams <awilliam () whitemice ! org>
Date: 2012-03-22 10:24:48
Message-ID: 1332411888.18176.2.camel () workstation ! wmmi ! net
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On Thu, 2012-03-22 at 11:19 +0100, Egoitz Aurrekoetxea wrote
> I have a mailbox machine with near 6000 users. This machine is having
> some delay on the replication. I'm debugging the replication and have
> seen twice some problems with two users in they're seen database which
> I solved basically removing the seen databases of this two users and
> running a reconstruct -r -f (later seen invocations have worked for
> one unless of this users). This machine has been created by doing
> manual replications of two servers that where running cyrusimap 2.3.14
> and this new one runs 2.3.18 which has the delays (although in
> greetings sais is 2.3.16, I assume perhaps this has forgotten to be
> changed in some banner field at code). Is there any advise for
> speeding replication?. I have sync_repeat_interval to one second
> (default). Is it normal replication to have some delay on perhaps busy
> servers?. We have joined two servers in one.... and have a
> master-slave replication now.
There are train loads of bug fixes since 2.3.x, many of which relate to
replication and database consistency. Not to mention that later 2.4.x
versions have a significant performance benefit.
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