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Re: LMDB database size

To: "Markus Doppelbauer" <doppelbauer@gmx.net>
Subject: Re: LMDB database size
From: Florian Weimer <fw@deneb.enyo.de>
Date: Sat, 01 Feb 2014 19:24:59 +0100
Cc: openldap-technical@openldap.org
In-reply-to: <trinity-2ed9e021-7691-4933-90cc-5ecf9e3509d0-1390662285748@3capp-gmx-bs07> (Markus Doppelbauer's message of "Sat, 25 Jan 2014 16:04:45 +0100 (CET)")
References: <trinity-2ed9e021-7691-4933-90cc-5ecf9e3509d0-1390662285748@3capp-gmx-bs07>

* Markus Doppelbauer:

> Is it possible to "mmap()" a 20 GB database into the RAM?

As far as I understand it, LMDB has no paging layer on its own, so it
needs 20 GB of address space.  So you need a 64-bit architecture and a
system which has not got artificial limits on virtual address space
(as some hosting environments have).

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