Fri, 18 Nov 2011

Converting KVM disk from qcow2 to lvm volume


# file *dsk
sth.dsk: QEMU QCOW Image (v2), 69793218560 bytes

lvcreate  -L69793218560b -n w732 dt

# time qemu-img convert sth.dsk -O raw /dev/dt/w732

real    23m9.403s
user    0m3.130s
sys     1m11.530s
And replace driver info from qcow2 to raw: 
    <emulator>/usr/bin/kvm</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='raw'/>
      <source file='/dev/dt/w732'/>
      <target dev='vda' bus='virtio'/>

[] permanent link

Thu, 10 Nov 2011

OpenSSL misc

                  sign    verify    sign/s verify/s
rsa  512 bits 0.000241s 0.000019s   4145.7  51455.6
rsa 1024 bits 0.001090s 0.000052s    917.6  19256.4
rsa 2048 bits 0.006173s 0.000167s    162.0   5997.7
rsa 4096 bits 0.039819s 0.000579s     25.1   1727.3
                  sign    verify    sign/s verify/s
dsa  512 bits 0.000190s 0.000219s   5250.9   4573.5
dsa 1024 bits 0.000510s 0.000601s   1960.4   1662.9
dsa 2048 bits 0.001641s 0.001968s    609.3    508.1

[/Benchmark] permanent link

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