Date: Mon, 04 May 2009 10:32:50 -0700 From: Julian Elischer <julian@elischer.org> To: "Paul B. Mahol" <onemda@gmail.com> Cc: FreeBSD Current <current@freebsd.org> Subject: Re: VIMAGE status Message-ID: <49FF26C2.8080202@elischer.org> In-Reply-To: <3a142e750905040553p48f6384aseb48c2067463ada4@mail.gmail.com> References: <49FC812B.2070305@elischer.org> <3a142e750905040553p48f6384aseb48c2067463ada4@mail.gmail.com>
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Paul B. Mahol wrote: > On 5/2/09, Julian Elischer <julian@elischer.org> wrote: >> The VIMAGE code is nearly all in the the kernel. >> >> One is now able to make VIMAGE kernels (add options VIMAGE) >> though they don't actually allow you to make multiple >> vimages instances yet.. >> >> The VIMAGE option enables all the low level changes needed >> throughout the kernel. >> >> The VIMAGE_GLOBALS option basically sets thing sback to how they were >> before. >> >> Having neither (the default) gives a kernel that is a kind of hybrid. >> >> The Hybrid state is what will go forward as 'NON-VIMAGE' mode >> and the VIMAGE_GLOBALS mode will probably go away in time as >> it complicates the code. >> >> The aim of this mail is to ask people to try add the VIMAGE option >> to their regular kernels and try use them as you woudl normally. >> You will not yet be able to use any new VIMAGE features but we >> should be fully compatible with previous kernels. >> >> Please report any concerns to the freebsd-virtualization@ mailing list. >> >> THEORETICALLY you should not see any changes in behaviour, however we >> have the following issues: >> >> * SCTP is not fully converted yet. add 'nooptions SCTP' for now if you >> are not using it yet. >> >> * An NFS (crash) issue was reported. This MAY have been fixed... >> >> >> Theory tells us that all three kernel options should behave about the >> same but if you do try this, and have any benchmarking facilities, >> it would be incredibly useful if you could let us know if you see any >> performance changes between the three. > > I'm experiencing strange 'netstat -r' output, perhaps I need to clean > /usr/obj/? (I dont have VIMAGE enabled) thanks if you do not have VIMAGE enabled then there should be no effect for you. I suggest you make sure that your userland and kernel are completely in sync. >
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