David Bremner <david@tethera.net> writes:

> jonathan@teamwilner.com writes:
>
>> I've got about 52K items with the tag "inbox". Should be "notmuch"
>> right? :-) Here's the problem - if I want to view that in tree view,
>> it can take multiple minutes for notmuch to return a result.
>
> In general there should be some results right away, with the rest of the
> buffer being filled asynchronously. Unfortunately notmuch-emacs only
> handles the one asynchronous query, so if there is already a long
> running query, you will indeed have to wait for the whole tree/list of
> headers to be read into emacs.
>

I think I see what is probably going on for you. You are probably first
opening the query with notmuch-search-mode, then switching to
notmuch-tree mode, This leads to the original query running in the
background, blocking your second (tree-mode) query from running. I
suggest trying M-x notmuch-tree directly (say in a fresh Emacs instance)
and see if it has the same delay.  If it works better, you can set the
default mode to open a saved search by customizing
notmuch-saved-searches.

It's been a while since I looked at the async code, maybe David E or
Mark have some ideas about how hard it would be to improve the current
behaviour of one async query blocking all others.

d
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