Yes I did read the man page, nothing in it says that an mdb from an amd64 server which leaves the setting on itís default shouldnít work on an arm64 server with the setting explicitly set false, Iíd hoped that it would but it certainly doesnít.

You seem to be all but saying that for some reason I canít run 32 bit indexes on my arm64 server with the mdb from the amd64 server, Itíd have been easier if youíd just said that if that is indeed the case.

It would be significantly desirable for us to port to arm64 first, with a quick rollback position should the arm64 hosted server have performance issues in prod, which it may, then optimise indexes later which is unlikely to have any potential downsides. If thatís not possible I accept that. Iíd just like to understand the options, or lack of options.

From: Quanah Gibson-Mount <>
Date: Sunday, 23 July 2023 at 20:43
To: Maud Parratt <>, <>
Subject: Re: slapindex a 60GB mdb in reasonable time

--On Sunday, July 23, 2023 8:38 PM +0000 Maud Parratt
<> wrote:

> which configuration were you referring to exactly?

Did you read the man page on the setting?

'Indices generated with 32 bit hashes are incompatible with the 64 bit
version, and vice versa. Any existing databases must be fully reloaded
when changing this setting. This directive is only supported on 64 bit

You need to change it to 64-bit on the AMD64 box, regenerate the indices
there, and then use the database on the ARM64 system.  Simply changing the
setting solves nothing and you want 64-bit anyhow.


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