HI
We have been asked by our IT department to move from our current physical solution to a VM environment. I am not that clued up on VM.
I looked from some benchmark tests to run so i can see a comparison between our live and new VM we have been presented. Please see below for results.
To me the VM looks slower. Can someone advice please and offer advice on any other tests we can run please.
We are running Redhat Enterprise 6.4.
Thanks in Advanced
Treds
Code:
[root@VIRTAL_SERVER SSD]# dd if=/dev/urandom of=store bs=1M count=1000
1000+0 records in
1000+0 records out
1048576000 bytes (1.0 GB) copied, 131.26 s, 8.0 MB/s
[root@VIRTAL_SERVER SSD]# dd if=store of=/dev/null bs=100M
10+0 records in
10+0 records out
1048576000 bytes (1.0 GB) copied, 0.502956 s, 2.1 GB/s
[root@VIRTAL_SERVER SSD]# dd if=store of=/dev/null bs=100M
10+0 records in
10+0 records out
1048576000 bytes (1.0 GB) copied, 0.4697 s, 2.2 GB/s
[root@VIRTAL_SERVER SSD]# dd if=store of=/dev/null bs=100M
10+0 records in
10+0 records out
1048576000 bytes (1.0 GB) copied, 0.461993 s, 2.3 GB/s
Existing physical. 172.27.90.3
[root@PHYSICAL_SERVER ~]# dd if=/dev/urandom of=store bs=1M count=1000
1000+0 records in
1000+0 records out
1048576000 bytes (1.0 GB) copied, 128.746 s, 8.1 MB/s
You have new mail in /var/spool/mail/root
[root@PHYSICAL_SERVER ~]# *dd if=store of=/dev/null bs=100M
10+0 records in
10+0 records out
1048576000 bytes (1.0 GB) copied, 0.551658 s, 1.9 GB/s
You have new mail in /var/spool/mail/root
[root@PHYSICAL_SERVER ~]# dd if=store of=/dev/null bs=100M
10+0 records in
10+0 records out
1048576000 bytes (1.0 GB) copied, 0.273119 s, 3.8 GB/s
[root@PHYSICAL_SERVER ~]# dd if=store of=/dev/null bs=100M
10+0 records in
10+0 records out
1048576000 bytes (1.0 GB) copied, 0.274492 s, 3.8 GB/s
Moderator's Comments:
Please use code tags next time for your code and data not HTML Thanks
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LEARN ABOUT REDHAT
amdd
AMDD(8) System Manager's Manual AMDD(8)NAME
amdd - Amanda version of dd
SYNOPSIS
amdd [ -d ] [ if=input ] [ of=output ] [ bs=blocksize ] [ skip=count ] [ count=count ]
DESCRIPTION
Amdd provides just enough of the standard dd command for the needs of Amanda. This is handy when doing a full restore and the standard dd
program has not yet been found.
Amdd also provides access to the Amanda output drivers that support various tape simulations. This may be used for debugging or to convert
from one format to another.
See the amanda(8) man page for more details about Amanda. See the OUTPUT DRIVERS section of amanda(8) for more information on the Amanda
output drivers.
OPTIONS -d Turn on debugging output.
-llength
Set the output length. If the output driver limits the output size, this controls when end of tape will be simulated.
Length may have a multiplier suffix:
k 1024 (Kilobytes)
b 512 (Blocks)
M 1024*1024 (Megabytes)
The default is no multipler (bytes).
if=input
Input to dd. Default is stdin.
of=output
Where to send the output of dd. Default is stdout.
bs=blocksize
Size of each record. Input records smaller than this will not be padded. Output records will be the same size as the corresponding
input record. Default is 512 bytes.
Blocksize may have a multiplier suffix:
k 1024 (Kilobytes)
b 512 (Blocks)
M 1024*1024 (Megabytes)
The default is no multipler (bytes).
count=count
Number of records to copy. Default is all records until end of file.
skip=count
Number of records to skip before copying input to output. Default is zero.
AUTHOR
Marc Mengel <mengel@fnal.gov>
John R. Jackson <jrj@purdue.edu>
SEE ALSO amanda(8)AMDD(8)
11-10-2014
