From: Michal Privoznik <mprivozn@redhat.com>
To: Linhaifeng <haifeng.lin@huawei.com>, qemu-devel@nongnu.org
Cc: liuyongan@huawei.com, lilijun <jerry.lilijun@huawei.com>
Subject: Re: [Qemu-devel] is qemu-2.1 support 1G hugepage
Date: Mon, 27 Oct 2014 04:34:09 +0100 [thread overview]
Message-ID: <544DBD31.50906@redhat.com> (raw)
In-Reply-To: <544A0C29.5050506@huawei.com>
On 24.10.2014 10:22, Linhaifeng wrote:
> Hi,
>
> I run qemu2.1 with 1G hugepage and found that VM can't start (too slowly?) but can start with 2M hugepage quickly.
>
> kernel version:3.10.0-123.6.3.el7.x86_64
>
> command:qemu-kvm -name vm1 -enable-kvm -smp 2 -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/dev/hugepages,share=on -numa node,memdev=mem \
> -chardev socket,id=chr0,path=/path/socket -netdev type=vhost-user,id=net0,chardev=chr0 -device virtio-net-pci,netdev=net0,mac=00:00:00:00:00:01
> -drive file=/mnt/sdb/imgs/vm1.img -vnc :0
>
What's the error message you're seeing? What's the filesystem mounted on
/dev/hugepages? Moreover, 1GB hugepages can't be allocated at runtime
currently, so do you allocate them on the host boot up process?
Michal
prev parent reply other threads:[~2014-10-27 3:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-24 8:22 [Qemu-devel] is qemu-2.1 support 1G hugepage Linhaifeng
2014-10-27 3:34 ` Michal Privoznik [this message]
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