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Zeeb" To: freebsd-hackers@freebsd.org Subject: Can we "pause" in loader and ddb>? Message-ID: X-OpenPGP-Key-Id: 0x14003F198FEFA3E77207EE8D2B58B8F83CCF1842 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; format=flowed; charset=US-ASCII X-ThisMailContainsUnwantedMimeParts: N Hi, having a VM sitting (a) in loader prompt or (b) in ddb> makes the fans go loud on a test-laptop which makes one wonder if we can avoid that. 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? I haven't looke dta the 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