From nobody Tue Nov 22 07:20:22 2022 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4NGbJJ6ss9z4j8hj for ; Tue, 22 Nov 2022 07:20:32 +0000 (UTC) (envelope-from wojtek@puchar.net) Received: from puchar.net (puchar.net [194.1.144.90]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4NGbJJ3XYGz3NS1; Tue, 22 Nov 2022 07:20:32 +0000 (UTC) (envelope-from wojtek@puchar.net) Authentication-Results: mx1.freebsd.org; none Received: Received: from 127.0.0.1 (localhost [127.0.0.1]) by puchar.net (8.15.2/8.16.1) with ESMTPS id 2AM7KNdk009826 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Tue, 22 Nov 2022 08:20:23 +0100 (CET) (envelope-from wojtek@puchar.net) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=puchar.net; s=default; t=1669101623; bh=78nvKl+fVJl3bVylMqXdheYlslM5M8zX9sDV13lO7Z4=; h=Date:From:To:cc:Subject:In-Reply-To:References; b=QUIFv7zWv618RvQqdH0ncakeFPgD3ZLfZnyBxEH0leJsDwfviKHLe0xrfxumae6GV gH2LCFfzgSCiGhUnwab6MsqYDcJ840P6RIcdzT/SFr55q4xMBB3cTgQc7J9r54vdhE 8o+H9KLZf8x+eqqmMQJzRUjs2jOKWQ3Ylskrjj4M= Received: from wojtek.intra (localhost [127.0.0.1]) by wojtek.intra (8.16.1/8.16.1) with ESMTP id 2AM7KMOs023107; Tue, 22 Nov 2022 08:20:22 +0100 (CET) (envelope-from wojtek@puchar.net) Received: from localhost (wojtek@localhost) by wojtek.intra (8.16.1/8.16.1/Submit) with ESMTP id 2AM7KM0s023104; Tue, 22 Nov 2022 08:20:22 +0100 (CET) (envelope-from wojtek@puchar.net) X-Authentication-Warning: wojtek.intra: wojtek owned process doing -bs Date: Tue, 22 Nov 2022 08:20:22 +0100 (CET) From: Wojciech Puchar To: "Bjoern A. Zeeb" cc: freebsd-hackers@freebsd.org Subject: Re: Can we "pause" in loader and ddb>? In-Reply-To: Message-ID: <4791ff8c-923d-3fbd-1ca0-f8f920b34e@puchar.net> References: List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed X-Rspamd-Queue-Id: 4NGbJJ3XYGz3NS1 X-Spamd-Bar: ---- X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:43476, ipnet:194.1.144.0/24, country:PL] X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-ThisMailContainsUnwantedMimeParts: N > Note -- I assume also on real HW though that's less likely observered > here. > > For example I am sitting in a 4 vCPU bhyve current in ddb> and two > threads are at 100% on the base system. Do we need to heat up the > planet doing that or are there alternatives? You are of course talking about real problem but could you please not smuggle ecoideology in the same time. Maybe you wrote it that way just as joke but please don't. > code in ages and I assume we need to poll in these situations on the > console and for interactivity often enough? Can we "pause"? And why > would two [v]CPUs be at 100% and not just one as I would expect all but > one to be stopped? > > /bz > > -- > Bjoern A. Zeeb r15:7 > >