From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Question about bignum usage Date: Thu, 20 Jun 2024 13:02:54 +0300 Message-ID: <868qz0nd81.fsf@gnu.org> References: <86frt8nn8b.fsf@gnu.org> <86ed8snk0p.fsf@gnu.org> <227390B1-09FC-4FD5-B9E9-2729624A0D13@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="28956"; mail-complaints-to="usenet@ciao.gmane.io" Cc: gerd.moellmann@gmail.com, emacs-devel@gnu.org To: Mattias =?utf-8?Q?Engdeg=C3=A5rd?= , Paul Eggert Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Thu Jun 20 12:03:51 2024 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1sKEdz-0007Jk-G0 for ged-emacs-devel@m.gmane-mx.org; Thu, 20 Jun 2024 12:03:51 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sKEdF-0004tS-IF; Thu, 20 Jun 2024 06:03:05 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sKEdC-0004rd-5U for emacs-devel@gnu.org; Thu, 20 Jun 2024 06:03:04 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sKEd9-0007IG-PW; Thu, 20 Jun 2024 06:03:00 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=LWMhh1eeT8/vkHkNhF2ZM9++CPJ01FmNoaS9QKCtlbw=; b=PiRjjAzRSOSuSQuN4Uxi Kxj5Fqy5fT1hBWIFBTkJFwtuwjrMcyyWXn2ko1Inmvhzpuf6/23/mgOaqBxYPhTKbTn/eqq3CeIPK Z46xHjLBUOpU52l50wUe4HOjWbIzOYIoDqL2Ga7JoicnT/53IgGFG92U0YmOcyVoWkyCalsxW4cZe Ltrit48x9PW2StRQSgBMmwQIzQrppVJs+31H73FZ4luyOETZgdzX5cem9RIBj7BQkeuGjZ2ySf2Gc qyBquvbYhFAn7qTAQhemmSaNyKlqRKME4bY8Qp30fh+MsbypKjx2rtfymExT7C++kgfii44R6SJjl RrDHuHgAH+2M2A==; In-Reply-To: <227390B1-09FC-4FD5-B9E9-2729624A0D13@gmail.com> (message from Mattias =?utf-8?Q?Engdeg=C3=A5rd?= on Thu, 20 Jun 2024 11:38:48 +0200) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:320318 Archived-At: > From: Mattias Engdegård > Date: Thu, 20 Jun 2024 11:38:48 +0200 > Cc: Gerd Möllmann , > emacs-devel@gnu.org > > 20 juni 2024 kl. 09.36 skrev Eli Zaretskii : > > > This means we check for expired times every 100 msec, so yes, we will > > create a lot of bignums. > > Right, and a few hundred bignums allocated every second isn't something even the current GC should have any trouble with. > > But it is a bit wasteful, isn't it? We use very short-lived bignums for internal purposes even when the picosecond part is 0, in places like decode_timer where there should be need to cons anything at all. Sure, if that can be avoided, it would be beneficial. Paul, any suggestions?