Thanks for the explanation.   I copied my sqlite3 db over to a vagrant VM 
running on a i3 NUC with 8GB and it took 11 seconds to update on a weewx 
restart, FWIW.  That's pretty snappy.

On Wednesday, December 30, 2020 at 4:00:50 PM UTC-8 Tom Keffer wrote:

> Gary: those MySQL patch times are longer than I had hoped. On my (SQLite) 
> Fit-PC it took only 4 of 5 seconds
>
> Vince: Because the problem was introduced by a V4.2 bug. So, we need only 
> patch from when V4.2 was introduced (26-Oct), plus a safety to cover any 
> archive loggers. An extra five months is probably overly conservative. 
> Maybe I should pair that back to two.
>
> -tk
>
>
> On Wed, Dec 30, 2020 at 3:40 PM Vince Skahan <[email protected]> wrote:
>
>> On Wednesday, December 30, 2020 at 5:09:01 AM UTC-8 Tom Keffer wrote:
>>
>>> How long did the startup reweightings take? It only does from 
>>> 1-Jun-2020, so should go very fast.
>>>
>>
>> Just curious, but why is it only reweighting just the last 7 months of 
>> data ?
>>
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