Re: High CPU usage on Tree View with many emails
Hi > When I make a query that gives many results (e.g. "review", which hits > ~2200 emails with my Gerrit reviews) and want to display them in Tree > View, the CPU usage stays high for several seconds. > > While this happens, the Emacs window flickers, like it was busy with > redisplaying the buffer. Yes I see this but I don't quite know why it happens. I think it is to do with the special tree graphics characters. Two things you could try are running emacs in a terminal, and changing the font. If you are happy compiling from source, then you could also try changing the characters used for the tree graphics (in emacs/notmuch-tree.el) If you are feeling more adventurous I think the flicker is fixed in emacs master, so emacs 26 should be OK. (*) Best wishes Mark (*) For an entertaining description of quite what was needed to make emacs double buffer its output see https://www.facebook.com/notes/daniel-colascione/buttery-smooth-emacs/10155313440066102/ > If I pull the horizontal scroll of the Emacs > buffer down, I can see that the buffer grows (like messages being > inserted there). The Emacs profiler says that more than 50% of CPU > time is spend in notmuch-tree-insert-forest-thread. > > Interestingly, the in the non-tree view the same query is processed in no > time. > > Any idea? > > -- > Piotr Trojanek > ___ > notmuch mailing list > notmuch@notmuchmail.org > https://notmuchmail.org/mailman/listinfo/notmuch ___ notmuch mailing list notmuch@notmuchmail.org https://notmuchmail.org/mailman/listinfo/notmuch
Re: High CPU usage on Tree View with many emails
Piotr Trojanek writes: > When I make a query that gives many results (e.g. "review", which hits > ~2200 emails with my Gerrit reviews) and want to display them in Tree > View, the CPU usage stays high for several seconds. > > While this happens, the Emacs window flickers, like it was busy with > redisplaying the buffer. If I pull the horizontal scroll of the Emacs > buffer down, I can see that the buffer grows (like messages being > inserted there). The Emacs profiler says that more than 50% of CPU > time is spend in notmuch-tree-insert-forest-thread. > > Interestingly, the in the non-tree view the same query is processed in no > time. > I suspect the notmuch-search call is taking longer than you think, but isn't as annoyoying because of the lack of flicker. You can watch the notmuch process running in e.g. top to see how long it is running. I don't really know what's going on there, but I noticed that notmuch-tree is producing about 3 times as manny calls to redisplay_internal. The other thing I observed is that the call to "notmuch show" used by notmuch-tree takes about 3x as long as the call to "notmuch search" used by M-x notmuch-search; that's with hot caches. It also produces about 4 x as much output, even using --body=false. All of those experiments are with a query that returns about 35k messages. ___ notmuch mailing list notmuch@notmuchmail.org https://notmuchmail.org/mailman/listinfo/notmuch
High CPU usage on Tree View with many emails
Hi, I am trying notmuch + notmuch-emacs version 0.23.5-1~bpo8+1 from debian jessie backports, and reproduced this issue with both emacs 24.4 (jessie) and 24.5+1-6~bpo8+1 (jessie backports). When I make a query that gives many results (e.g. "review", which hits ~2200 emails with my Gerrit reviews) and want to display them in Tree View, the CPU usage stays high for several seconds. While this happens, the Emacs window flickers, like it was busy with redisplaying the buffer. If I pull the horizontal scroll of the Emacs buffer down, I can see that the buffer grows (like messages being inserted there). The Emacs profiler says that more than 50% of CPU time is spend in notmuch-tree-insert-forest-thread. Interestingly, the in the non-tree view the same query is processed in no time. Any idea? -- Piotr Trojanek ___ notmuch mailing list notmuch@notmuchmail.org https://notmuchmail.org/mailman/listinfo/notmuch