Date: Wed, 10 Sep 2008 16:12:25 -0700 From: "Artem Belevich" <fbsdlist@src.cx> To: "Alan Cox" <alc@cs.rice.edu> Cc: freebsd-hackers@freebsd.org Subject: Increasing KVM on amd64 Message-ID: <ed91d4a80809101612t4e74a1e6y5ffffcf7ebf63d5d@mail.gmail.com>
next in thread | raw e-mail | index | archive | help
Alan, Thanks a lot for the patch. I've applied it to RELENG_7 and it seems to work great - "make -j8 buildworld" succeeds, linux emulation seems to work well enough to run linux-sun-jdk14 binaries, ZFS ARC size is bigger, too. So far I didn't see any ZFS-related KVM shortages either. The only problem is that everything is fine as long as vm.kmem_size is set to less or equal to 4096M. As soon as I set it to 4100M or anything larger, kernel crashes on startup. I'm unable to capture exact crash messages as they keep scrolling really fast on the screen for a few seconds until the box reboots. Unfortunately the box does not have built-in serial ports, so the messages are gone before I can see them. :-( Is there a way to bump up KVM size even further - beyond 6GB? I've got a box with 8GB or RAM and would like let ZFS ARC use most of it which would require pretty large vm.kmem_max to fit it in. Thanks, --Artem
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?ed91d4a80809101612t4e74a1e6y5ffffcf7ebf63d5d>