BECOT Jérôme wrote:
> Thank you for the help. We will look at the clients. I fear sssd would be the 
> culprit, but we have to investigate first.

There's really nothing that needs to be done here. The deferred operations will 
eventually get processed.
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------
> *De :* Howard Chu <[email protected]>
> *Envoyé :* lundi 25 mars 2024 20:52
> *À :* Quanah Gibson-Mount <[email protected]>; Christopher Paul 
> <[email protected]>; BECOT Jérôme <[email protected]>; 
> openldap-technical
> <[email protected]>
> *Objet :* Re: Help debugging slave slapd issues
>  
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> Quanah Gibson-Mount wrote:
>>
>>
>> --On Monday, March 25, 2024 6:06 PM +0000 Christopher Paul 
>> <[email protected]> wrote:
>>
>>>> Those aren't errors.
>>>
>>> But a deferral is not optimal, is it? I think the question "hints about
>>> way to debug" is probably a good one. The brute force method to fix this
>>> would be to add consumers and spread out the load. Horizontal scaling is
>>> the main benefit of a replicated architecture.
> 
>>>> slapd[37277]: connection_input: conn=32974 deferring operation: too many 
>>>> executing
> 
>> Deferrals are common, they are not necessarily indicative of an issue, and 
>> without more detail there's no way to determine there is an issue that needs 
>> to be
>> addressed or not.
> 
> Yes, they're common, and these are caused by a client sending too many 
> operations over
> a connection without waiting for them to complete. In other words, a poorly 
> written
> client.
> 
> Simply adding more replicas does nothing to address this, you need a load 
> balancer that
> spreads all client queries out, even when they're all coming in from a single 
> connection.
> 
> Better yet is to identify the client and fix it.


-- 
  -- 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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