performance problems with notmuch new

[Don Zickus]

On Fri, Apr 24, 2020 at 08:07:27PM -0300, David Bremner wrote:
> Don Zickus <dzickus at redhat.com> writes:
> 
> >
> > Of course I am using this in a strange context.  I am deleting emails
> > locally and then running 'notmuch new' to clean up the database.
> >
> [snip]
> > So maybe my use case is unusual and the slowness is expected.
> 
> I'd say it's a known performance bug in notmuch that it doesn't deal
> well with large numbers of deletions. At some point it is faster to
> reindex the whole database from scratch.

Does that mean 'notmuch dump' and 'notmuch restore'?  Willing to try that.

Cheers,
Don