Re: [Qemu-devel] Speed disk virtio

[XliN <saikov.vb@gmail.com>]

08.02.2014 03:55, Brian Jackson пишет:
> What latest? There are a few different places to get drivers (Fedora
> site, RHEL subscription, build yourself, etc). From the graphs, it looks
> 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 know
> 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 
learning about this virtualization and please write more.

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

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

Settings made ​​only

[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 = 0

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

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

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

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

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

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

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

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

#########


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

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

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

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