From mboxrd@z Thu Jan  1 00:00:00 1970
From: XliN <saikov.vb@gmail.com>
Subject: Re: [Qemu-devel] Speed disk virtio
Date: Sat, 08 Feb 2014 12:07:53 +0400
Message-ID: <52F5E5D9.3010206@gmail.com>
References: <52F0F74F.6090001@gmail.com> <52F5726C.7040702@theiggy.com>
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To: Brian Jackson <iggy@theiggy.com>, kvm@vger.kernel.org
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08.02.2014 03:55, Brian Jackson =D0=BF=D0=B8=D1=88=D0=B5=D1=82:
> What latest? There are a few different places to get drivers (Fedora
> site, RHEL subscription, build yourself, etc). From the graphs, it lo=
oks
> like the speed isn't too bad at times. But it's hard to tell with the
> information you've given about your particular config. I mean 50MB/s
> isn't bad for a single rotating disk on raw storage. But we don't kno=
w
> what kind of setup you have since you didn't tell us.
What data you want from me? Tell me and I will give. I just started=20
learning about this virtualization and please write more.

Drivers download=20
http://alt.fedoraproject.org/pub/alt/virtio-win/latest/images/

All images of guest systems are in folders in a file raw format. Centos=
=20
host on LVM

Settings made =E2=80=8B=E2=80=8Bonly

[root@micro ~]# cat /etc/sysctl.conf
# Kernel sysctl configuration file for Red Hat Linux
#
# For binary values, 0 is disabled, 1 is enabled.  See sysctl(8) and
# sysctl.conf(5) for more details.

# Controls IP packet forwarding
net.ipv4.ip_forward =3D 0

# Controls source route verification
net.ipv4.conf.default.rp_filter =3D 1

# Do not accept source routing
net.ipv4.conf.default.accept_source_route =3D 0

# Controls the System Request debugging functionality of the kernel
kernel.sysrq =3D 0

# Controls whether core dumps will append the PID to the core filename.
# Useful for debugging multi-threaded applications.
kernel.core_uses_pid =3D 1

# Controls the use of TCP syncookies
net.ipv4.tcp_syncookies =3D 1

# Disable netfilter on bridges.
net.bridge.bridge-nf-call-ip6tables =3D 0
net.bridge.bridge-nf-call-iptables =3D 0
net.bridge.bridge-nf-call-arptables =3D 0

net.ipv6.conf.all.disable_ipv6 =3D 1
net.ipv6.conf.default.disable_ipv6 =3D 1

#########
vm.dirty_expire_centisecs =3D 3000
vm.dirty_background_ratio =3D 5
vm.dirty_ratio =3D 15
vm.swappiness =3D 100

#########


# Controls the default maxmimum size of a mesage queue
kernel.msgmnb =3D 65536

# Controls the maximum size of a message, in bytes
kernel.msgmax =3D 65536

# Controls the maximum shared segment size, in bytes
kernel.shmmax =3D 68719476736

# Controls the maximum number of shared memory segments, in pages
kernel.shmall =3D 4294967296