Date: Mon, 2 Nov 2015 20:49:49 +0100 From: "Ranjan1018 ." <214748mv@gmail.com> To: Christer Solskogen <christer.solskogen@gmail.com> Cc: freebsd-emulation@freebsd.org Subject: Re: Slowness with Virtualbox Message-ID: <CACyC=qa8by-ji_k2X-n=9HVuHwCrU%2B=Hn2=YU%2BGRcjnwL9Az=A@mail.gmail.com> In-Reply-To: <n18avp$8mo$1@ger.gmane.org> References: <n0lpc3$9dh$1@ger.gmane.org> <56379D92.40501@wintek.com> <n18avp$8mo$1@ger.gmane.org>
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2015-11-02 19:45 GMT+01:00 Christer Solskogen <christer.solskogen@gmail.com> : > On 02.11.2015 18.29, Richard Kuhns wrote: > >> How many cores on your physical box? >> >> I have a 6 core Dell precision 7810. If hyperthreading is enabled (so >> FreeBSD apparently thinks I have 12 cores), and VMs running under >> VirtualBox are so slow as to be totally unusable. If I disable >> hyperthreading, VMs are still extremely slow but usable in case of >> emergency. >> >> > Yes, HT is enabled. I have six cores as well. Pretty sure we're facing the > same issue. I've never tried with HT disabled, however. > > -- > chs You may not use the core 0 (cpu0 and cpu1) with the VMs, I use the CPUSET(1) command to do it. Eg. to start a Windows 7 VM in headless mode I use the command: # cpuset -l 4-7 /usr/local/lib/virtualbox/VBoxHeadless --comment "Win7;5901" --startvm "Win7;5901" Regards, Maurizio
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