Date: Tue, 3 Dec 2019 07:29:22 -0800 (PST) From: "Rodney W. Grimes" <freebsd-rwg@gndrsh.dnsmgr.net> To: Wojciech Puchar <wojtek@puchar.net> Cc: "Rodney W. Grimes" <freebsd-rwg@gndrsh.dnsmgr.net>, freebsd-hackers@freebsd.org Subject: Re: bhyve+windows 7 multicore performance Message-ID: <201912031529.xB3FTMnY035614@gndrsh.dnsmgr.net> In-Reply-To: <alpine.BSF.2.20.1912031055480.63051@puchar.net>
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> >> i run bhyve VM like this: > >> nice -n -20 /usr/sbin/bhyve -s 0,hostbridge -m 22528M \ > > ^^^^^^^^^^^^ why? > > to make sure VM will not be slower down too much if i put other high load > on host site. > > > > >> > >> But windows feels quite slower that it was before. There is for sure no > >> problem with I/O performance. It's about compute speed. > > > > How did you measure this? If it is just a "feel" then it could > > be almost anything, if you have some solid numbers to look at > > then perhaps some conclusions can be made. > > > >> What i do wrong? > > > > Try 4 cores, and drop the priority boost, you may be causeing > > Well i need more cores than 4 for that VM. > I will try even number (10) and no nice. If 4 cores performs better than 10 cores why would you want to intentionally slow it down? > > an unintended side effect. > > > > > > > > Did you copy the windows 7 from the old server, or is this > > a new install to the VM. If you copied it there may be a > > HAL issue/missmatch. > Copied, and installed missing drivers. > > I didn't install windoze for over 5 years :) Ok, this may mean there is a HAL missmatch. -- Rod Grimes rgrimes@freebsd.org
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