Yes, the price you pay for using software record generation. Also, I forgot 
about no_catchup being introduced in 3.9.1. That changes the logic during a 
startup catchup, now software record generation will also get caught up in 
the 'timestamp less than final' issue unless you set no_catchup = False. 
But then, as you say, you will miss out on any catchup records in timea 
when you do not have corrupt station memory.

Guess that's why I have a UPS as well :)

Gary

On Thursday, 17 October 2019 09:35:21 UTC+10, Thomas Keffer wrote:
>
> Immune, yes, but you also won't get any archive records stored on the 
> logger while your computer is down!
>
> On Wed, Oct 16, 2019 at 4:33 PM gjr80 <[email protected] <javascript:>> 
> wrote:
>
>> One other thing to keep in mind; the de facto standard mode of operation 
>> of a Davis station under WeeWX is to use hardware record generation, in 
>> other words WeeWX obtains and stores archive records from from the 
>> console/logger. WeeWX can also operate using software record generation 
>> where only loop packets are obtained from the logger/console and archive 
>> records are synthesised by WeeWX from this data. When the logger 
>> experiences corrupted memory/temporal displacement it almost always 
>> continues to emit loop packets but emits old archive records. So when 
>> operated in software record generation mode WeeWX will essentially be 
>> immune from the corrupted station memory issue. Similarly, other PWS 
>> software that only use loop packets will not be affected by the corrupted 
>> station memory issue.
>>
>> I don't see this as a WeeWX bug, rather a limitation of operating in 
>> hardware record generation mode that can be mitigated by reliable power and 
>> clock.
>>
>> Gary
>>
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