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From: Eric Van Hensbergen <ericvh@gmail.com>
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Date: Tue, 16 Mar 2010 18:47:36 -0500
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To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] interesting qemu problem
Topicbox-Message-UUID: eb052d0e-ead5-11e9-9d60-3106f5b1d025

On Mar 16, 2010, at 6:04 PM, ron minnich wrote:

> I was wrong. I built a new kernel from sources and performance is
> still very bad, with a load of 2500 minimum.
>=20
> Also, venti, on this little machine, is a bit hungry for memory.
> venti...2010/0316 20:31:06 venti: conf.../boot/venti: mem 1,048,576
> bcmem 140,753,578 icmem 211,130,368...httpd
> tcp!127.1!8000...init...icache 211,130,368 bytes =3D 3,298,912 =
entries;
> 16 scache
> sync...2010/0316 20:31:12 arenas01: indexing 430 clumps...
> announce tcp!127.1!17034...serving.
> fossil(#S/sdC0/fossil)...fsys: dialing venti at tcp!127.1!17034
>=20
>=20
> This image formerly ran in 256M, now requires 512M, because venti
> footprint is 140+211+211 ... wait, how does it ever fit in 512 anyway.
>=20
> I think qemu changed too. An old kernel has the same problems. Not
> sure what is up here. but for now qemu on unongo 9.10 is useless for
> plan 9 from what I can see.
>=20


You could configure venti to be less aggressive with its use of memory, =
but that would likely hurt performance.

Running venti inside qemu is silly.  If you really want venti for your =
vm, run venti on the host and target your in-vm fossil at it.=20

       -eric