<DKIM> Re: <DKIM> Re: <DKIM> [PATCH,review]: add lmdb folder backend

Howard Chu hyc at symas.com
Tue Dec 20 13:30:22 GMT 2016

Luke Kenneth Casson Leighton wrote:
> ---
> crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
> On Mon, Dec 19, 2016 at 11:18 PM, Nicolas Sebrecht
> <nicolas.s-dev at laposte.net> wrote:
>> On Mon, Dec 19, 2016 at 09:37:36PM +0000, Luke Kenneth Casson Leighton wrote:
>>>  ahh, that's the really cool part: that top-level b-tree, it's a
>>> single page (and all pages are aligned to match exactly with the OS's
>>> VM page size and boundary).
>> This makes me wonder if those databases can be moved to any other host.
>  interesting question!  let me just bcc howard.  howard what happens
> if you move an lmdb to another host with a totally different page
> size?

You'll probably take a performance hit for using a non-native page size, but 
since the original page size is recorded in the env header, it will continue 
to work.

   -- Howard Chu
   CTO, Symas Corp.           http://www.symas.com
   Director, Highland Sun     http://highlandsun.com/hyc/
   Chief Architect, OpenLDAP  http://www.openldap.org/project/

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