Dear Kazuyuki San, Thank you for your answere. I have added (setq howm-view-use-grep t) to my emacs init file (it wasn't there), but reading your mail I realize that first search is longer, then other subsequent searches are faster. On my case, subsequent searches took approximately 5 seconds, which is way faster ! Thank you for looking into my problem. Props :) Yassine. On Sunday, September 13, 2020, 1:31:15 PM GMT+1, khi****@users***** <khi****@users*****> wrote: Hi, Yassine san. 74MB within 1 sec in my case (except for the first run). Though I've not read your post carefully yet, I'd like to confirm this first of all: Have you tried (setq howm-view-use-grep t) ? It is almost necessary for serious use. You can find it at the bottom of M-x customize-group RET howm-efficiency RET . See also M-x customize-group RET howm-efficiency RET for further customization. (I'm afraid their descriptions are too unkind. Do they make sense?) -- khi****@users***** _______________________________________________ Howm-eng mailing list Howm-****@lists***** https://lists.osdn.me/mailman/listinfo/howm-eng -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://lists.osdn.me/mailman/archives/howm-eng/attachments/20200914/f1eaad3a/attachment.html>